| 1. |
- Aad, G., et al.
(author)
-
Commissioning of the ATLAS Muon Spectrometer with cosmic rays
- 2010
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In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 70:3, s. 875-916
-
Journal article (peer-reviewed)abstract
- The ATLAS detector at the Large Hadron Collider has collected several hundred million cosmic ray events during 2008 and 2009. These data were used to commission the Muon Spectrometer and to study the performance of the trigger and tracking chambers, their alignment, the detector control system, the data acquisition and the analysis programs. We present the performance in the relevant parameters that determine the quality of the muon measurement. We discuss the single element efficiency, resolution and noise rates, the calibration method of the detector response and of the alignment system, the track reconstruction efficiency and the momentum measurement. The results show that the detector is close to the design performance and that the Muon Spectrometer is ready to detect muons produced in high energy proton-proton collisions.
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| 2. |
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| 3. |
- Aad, G., et al.
(author)
-
Readiness of the ATLAS Tile Calorimeter for LHC collisions
- 2010
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In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 70:4, s. 1193-1236
-
Journal article (peer-reviewed)abstract
- The Tile hadronic calorimeter of the ATLAS detector has undergone extensive testing in the experimental hall since its installation in late 2005. The readout, control and calibration systems have been fully operational since 2007 and the detector has successfully collected data from the LHC single beams in 2008 and first collisions in 2009. This paper gives an overview of the Tile Calorimeter performance as measured using random triggers, calibration data, data from cosmic ray muons and single beam data. The detector operation status, noise characteristics and performance of the calibration systems are presented, as well as the validation of the timing and energy calibration carried out with minimum ionising cosmic ray muons data. The calibration systems' precision is well below the design value of 1%. The determination of the global energy scale was performed with an uncertainty of 4%.
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| 4. |
- Aad, G., et al.
(author)
-
Studies of the performance of the ATLAS detector using cosmic-ray muons
- 2011
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In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 71:3
-
Journal article (peer-reviewed)abstract
- Muons from cosmic-ray interactions in the atmosphere provide a high-statistics source of particles that can be used to study the performance and calibration of the ATLAS detector. Cosmic-ray muons can penetrate to the cavern and deposit energy in all detector subsystems. Such events have played an important role in the commissioning of the detector since the start of the installation phase in 2005 and were particularly important for understanding the detector performance in the time prior to the arrival of the first LHC beams. Global cosmic-ray runs were undertaken in both 2008 and 2009 and these data have been used through to the early phases of collision data-taking as a tool for calibration, alignment and detector monitoring. These large datasets have also been used for detector performance studies, including investigations that rely on the combined performance of different subsystems. This paper presents the results of performance studies related to combined tracking, lepton identification and the reconstruction of jets and missing transverse energy. Results are compared to expectations based on a cosmic-ray event generator and a full simulation of the detector response.
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| 5. |
- Aad, G., et al.
(author)
-
The ATLAS Inner Detector commissioning and calibration
- 2010
-
In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 70:3, s. 787-821
-
Journal article (peer-reviewed)abstract
- The ATLAS Inner Detector is a composite tracking system consisting of silicon pixels, silicon strips and straw tubes in a 2 T magnetic field. Its installation was completed in August 2008 and the detector took part in data-taking with single LHC beams and cosmic rays. The initial detector operation, hardware commissioning and in-situ calibrations are described. Tracking performance has been measured with 7.6 million cosmic-ray events, collected using a tracking trigger and reconstructed with modular pattern-recognition and fitting software. The intrinsic hit efficiency and tracking trigger efficiencies are close to 100%. Lorentz angle measurements for both electrons and holes, specific energy-loss calibration and transition radiation turn-on measurements have been performed. Different alignment techniques have been used to reconstruct the detector geometry. After the initial alignment, a transverse impact parameter resolution of 22.1 +/- 0.9 mu m and a relative momentum resolution sigma (p) /p=(4.83 +/- 0.16)x10(-4) GeV(-1)xp (T) have been measured for high momentum tracks.
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| 6. |
- Aad, G., et al.
(author)
-
The ATLAS Simulation Infrastructure
- 2010
-
In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 70:3, s. 823-874
-
Journal article (peer-reviewed)abstract
- The simulation software for the ATLAS Experiment at the Large Hadron Collider is being used for large-scale production of events on the LHC Computing Grid. This simulation requires many components, from the generators that simulate particle collisions, through packages simulating the response of the various detectors and triggers. All of these components come together under the ATLAS simulation infrastructure. In this paper, that infrastructure is discussed, including that supporting the detector description, interfacing the event generation, and combining the GEANT4 simulation of the response of the individual detectors. Also described are the tools allowing the software validation, performance testing, and the validation of the simulated output against known physics processes.
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| 7. |
- Aad, G., et al.
(author)
-
- 2011
-
Journal article (peer-reviewed)
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| 8. |
- Aad, G., et al.
(author)
-
The ATLAS Experiment at the CERN Large Hadron Collider
- 2008
-
In: Journal of Instrumentation. - 1748-0221. ; 3:S08003
-
Research review (peer-reviewed)abstract
- The ATLAS detector as installed in its experimental cavern at point 1 at CERN is described in this paper. A brief overview of the expected performance of the detector when the Large Hadron Collider begins operation is also presented.
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| 9. |
- Abata, E., et al.
(author)
-
Study of energy response and resolution of the ATLAS barrel calorimeter to hadrons of energies from 20 to 350 GeV
- 2010
-
In: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier. - 0168-9002 .- 1872-9576 .- 0167-5087. ; 621:1-3, s. 134-150
-
Journal article (peer-reviewed)abstract
- A fully instrumented slice of the ATLAS detector was exposed to test beams from the SPS (Super Proton Synchrotron) at CERN in 2004. In this paper, the results of the measurements of the response of the barrel calorimeter to hadrons with energies in the range 20-350 GeV and beam impact points and angles corresponding to pseudo-rapidity values in the range 0.2-0.65 are reported. The results are compared to the predictions of a simulation program using the Geant 4 toolkit. (C) 2010 Published by Elsevier B.V.
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| 10. |
- Anna, Malm, 1978, et al.
(author)
-
Production start-up phase - A comparison between New Product Development and Production Relocation
- 2012
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In: Proceedings of the 5th International Swedish Production Symposium. - 9789175197524 ; , s. 593-598
-
Conference paper (peer-reviewed)abstract
- New product development in a globalized industrial environment with a constant increasing competition, challenges the ways to perform production start-up and production relocation. A product development process focuses in general on product function and to avoid product quality problems. A production relocation focus also on avoiding product quality problems, but relocation is mostly related to forgotten or misunderstood information. The challenging situation due to a more global market is the increasing need for production relocation. In this paper, a literature review is performed investigating these three areas and relate them with industrial experience from production relocations. To summaries, the existing processes in industry today seem to be based on processes for product development. The results view that effectiveness in production relocation are dependent on technology and knowledge transfer and the production start-up process.
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| 11. |
- Ashour Pour, Milad, et al.
(author)
-
Deployment of additive manufacturing and robotics for increasing flexibility in productions
- 2022
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In: SPS2022. - Amsterdam : IOS Press. - 9781643682686 - 9781643682693 ; , s. 533-541
-
Conference paper (peer-reviewed)abstract
- As manufacturing industry seeks different strategies and technologies to respond to the ever-increasing demands in markets that prioritize versatility of products with low-volume productions, certain technologies and strategies gain more attraction and form higher acceptance levels among different sectors. Individual firms are driven by their market requirements. Various factors including product specification, assembly sequence, and manufacturing operations are central to the decisions that are made with respect to the type of technology to respond to market dynamics. Additive Manufacturing (AM) is one of the technology alternatives that has exhibited remarkable strengths in countering market disruptions. Although AM can be utilized along conventional technologies (i.e., subtracting and forming) in a hybrid context to combine advantages and offset weaknesses of each category, the arguments supporting its applications would need to be formulated rigorously to ensure investments are rightfully justified. Another alternative continuously investigated by companies is automation and more specifically, using robotics for various purposes e.g., operations like welding and painting, material handling, machine tending, etc. Both industrial robots and the applications that require a collaboration between humans and robots can be valid in this context. Considering advancements in AM and Automation and their potentials in increasing flexibility, expediting operations, and leveraging cost advantages, this paper explores how AM and automation in tandem could improve flexibility in productions. Results of this study can be used for proposing a conceptual model which will be further developed and then tested on industrial cases in future studies. While this study incorporates raw data about processing requirements in production that has been obtained via interviews with industrial companies, inputs about the technologies i.e., AM and robotics are derived from literature.
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| 12. |
- Ashourpour, M., et al.
(author)
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Real-Time Defect and Object Detection in Assembly Line : A Case for In-Line Quality Inspection
- 2023
-
In: Flexible Automation and Intelligent Manufacturing. - : Springer. - 9783031382406 - 9783031382413 ; , s. 99-106
-
Conference paper (peer-reviewed)abstract
- Identification of flawed assemblies and defective parts or products as early as possible is a daily struggle for manufacturing companies. With the ever-increasing complexity of assembly operations and manufacturing processes alongside the need for shorter cycle times and higher flexibility of productions, companies cannot afford to check for quality issues only at the end of the line. In-line quality inspection needs to be considered as a vital part of the process. This paper explores use of a real-time automated solution for detection of assembly defects through YOLOv8 (You Only Look Once) deep learning algorithm which is a class of convolutional neural networks (CNN). The use cases of the algorithm can be extended into detection of multiple objects within a single image to account for not only defects and missing parts in an assembly operation, but also quality assurance of the process both in manual and automatic cells. An analysis of YOLOv8 algorithm over an industrial case study for object detection shows the mean average precision (mAP) of the model on the test dataset and consequently its overall performance is extremely high. An implementation of this model would facilitate in-line quality inspection and streamline quality control tasks in complex assembly operations.
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| 13. |
- Azizpour, G., et al.
(author)
-
Enhancing Manufacturing Flexibility Through Automation Packaged Solution (APS) : A Case Study Approach
- 2024
-
In: Advances in Transdisciplinary Engineering. - : IOS Press BV. - 9781643685106 - 9781643685113 ; , s. 219-230
-
Conference paper (other academic/artistic)abstract
- The use of automation is reshaping tasks in diverse industries, leading to increased productivity and efficiency. The manufacturing sector, in particular, has enjoyed significant advantages from automation, including enhanced quality control, waste reduction, and improved worker safety. However, while the advantages of automation in manufacturing are clear, the implementation of automation in complex manufacturing processes is not without its challenges. One such challenge is ensuring adaptability to new products. In addition, the initial investment for automation in manufacturing processes often presents a significant financial difficulty, particularly in the areas of engineering, design, and programming. The aim of this paper is to provide flexible solutions that can be adopted on any manufacturing line within a short timeframe. This type of flexible solution is referred to as Automation Packaged Solution (APS). APSs involve the deployment of robotic systems and vision technologies to automate specific tasks. The key advantage of these flexible solutions is their ability to adapt to the introduction of new products into the production line without the need for extensive reengineering and reprogramming. The approach involves designing detailed computer simulations based on the initial solutions and bringing the solution to life through an offline commissioning method. In this research, a case study was conducted at a manufacturing plant in Sweden, where two APSs were introduced to their assembly line: Precise screwing and accurate application of product labeling. These APSs play a crucial role in facilitating rapid upgrades and adjustments to automation systems, especially considering the diverse range of product models. This adaptability reduces the time and resources required for reconfiguration and contributes to enhanced operational efficiency, cost-effectiveness, and more sustainable manufacturing solutions. Moreover, it opens up the possibility of transferring these APSs to another production line if the need arises.
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| 14. |
- Björnsson, Andreas, 1981-, et al.
(author)
-
Automated Composite Manufacturing Using Off-the-shelf Automation Equipment – A Case from the Space Industry
- 2014
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In: Proceedings of the 16th European Conference on Composite Materials, 22nd-26th June 2014, Seville, Spain. - 9788461697984
-
Conference paper (peer-reviewed)abstract
- A novel approach to the manufacturing of composite products using off-the-shelf automation equipment is explored in this article. A manufacturing concept for a specific product is developed and analyzed, from a technical perspective, in order to find areas where off-the-shelf automation equipment can be used. The article also highlights areas where case-specific solutions need to be developed. In this particular case, off-the-shelf automation equipment can be used for most of the tasks that the manufacturing system needs to perform. The most challenging process is identified as the application of adhesive. The manufacturing concept described in the article shows that it is possible to build a system for the manufacturing of composite components using a high degree of off-the-shelf automation equipment.
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| 15. |
- Björnsson, Andreas
(author)
-
Automated layup and forming of prepreg laminates
- 2017
-
Doctoral thesis (other academic/artistic)abstract
- Composite materials like carbon fiber-reinforced polymers (CFRPs) present highly appealing material properties, as they can combine high strength with low weight. In aerospace applications, these properties help to realize lightweight designs that can reduce fuel consumption. Within the aerospace industry, the use of these types of materials has increased drastically with the introduction of a new generation of commercial aircraft. This increased use of CFRP drives a need to develop more rational manufacturing methods.For aerospace applications, CFRP products are commonly manufactured from a material called prepreg, which consists of carbon fibers impregnated with uncured polymer resin. There are two dominant manufacturing technologies for automated manufacturing using prepreg, automated tape layup and automated fiber placement. These two technologies are not suitable for all types of products, either due to technical limitations or a combination of high investment costs and low productivity. Automation alternatives to the two dominant technologies have been attempted, but have so far had limited impact. Due to the lack of automation alternatives, manual manufacturing methods are commonly employed for the manufacturing of complex-shaped products in low to medium manufacturing volumes.The research presented in this thesis aims to explore how automated manufacturing systems for the manufacturing of complex CFRP products made from prepreg can be designed so that they meet the needs and requirements of the aerospace industry, and are suitable for low to medium production volumes. In order to explore the area, a demonstrator-centered research approach has been employed. A number of demonstrators, in the form of automated manufacturing cells, have been designed and tested with industrial and research partners. The demonstrators have been used to identify key methods and technologies that enable this type of manufacturing, and to analyze some of these methods and technologies in detail. The demonstrators have also been used to map challenges that affect the development of enabling methods and technologies.Automated manufacturing of products with complex shapes can be simplified by dividing the process into two steps. Thin layers of prepreg are laid up on top of each other to form flat laminates that are formed to the desired shape in subsequent forming operations. The key methods and technologies required to automate such a system are methods and technologies for automated prepreg layup, the automated removal of backing paper and the forming of complex shapes. The main challenges are the low structural rigidity and tacky nature of prepreg materials, the extensive quality requirements in the aerospace industry and the need for the systems to handle a wide array of prepreg shapes.The demonstrators show that it is possible to automate the manufacturing of complexshaped products using automated layup and forming of prepreg laminates. Tests using the demonstrators indicate that it is possible to meet the quality requirements that apply to manual manufacturing of similar products.
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| 16. |
- Björnsson, Andreas, 1981-, et al.
(author)
-
Automated material handling in composite manufacturing using pick-and-place systems - a review
- 2018
-
In: Robotics and Computer-Integrated Manufacturing. - : Elsevier BV. - 0736-5845 .- 1879-2537. ; 51, s. 222-229
-
Journal article (peer-reviewed)abstract
- With increasing use of fiber reinforced polymer composites follows a natural pursuit for more rational and effective manufacturing. Robotic pick-and-place systems can be used to automate handling of a multitude of materials used in the manufacturing of composite parts. There are systems developed for automated layup of prepreg, dry fibers and thermoplastic blanks as well as to handle auxiliary materials used in manufacturing. The aim of this paper is to highlight the challenges associated with automated handling of these materials and to analyze the main design principles that have been employed for pick-and-place systems in terms of handling strategy, reconfigurability, gripping technology and distribution of gripping points etc. The review shows that it is hard to find generic solutions for automated material handling due to the great variety in material properties. Few cases of industrial applications in full-scale manufacturing could be identified.
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| 17. |
- Björnsson, Andreas, 1981-, et al.
(author)
-
Automated Removal of Prepreg Backing Paper - A Sticky Problem
- 2013
-
In: Proceedings of the SAE 2013, Aerotech Congress and Exhibition, 24th-26th September 2013, Montreal,Canada. - 400 Commonwealth Drive, Warrendale, PA, United States : SAE International.
-
Conference paper (peer-reviewed)abstract
- Automated solutions for manufacturing composite products based on prepreg often imply Automatic Fiber Placement or Automatic Tape Laying. These systems are generally associated with huge investments. For certain manufacturing applications it is interesting to investigate alternatives to find simpler and less costly automation. One example of an automated system could be the use of a standard industrial robot to pick single prepreg plies from an automated cutting machine and stack them to form a plane laminate. This paper is based on a case illustrating a product from the aircraft manufacturing industry. The case will demonstrate a pick and place concept on a general level and illustrate challenges that must be solved. The challenge selected to be the main focus for this paper is an automated process for backing paper removal. A literature review of different gripping technologies reveals several interesting technologies, and the most promising are tested for backing paper removal. The tests show that an automated removal process can be designed by using standard vacuum grippers in combination with mechanical clamping grippers. In order to lift the backing paper with a vacuum gripper an initial separation between the backing paper and prepreg is needed. This separation is most easily mechanically induced by bending the material. The proposed solution for automatic backing paper removal can be integrated in a manufacturing cell for manufacturing of the studied product.
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| 18. |
- Björnsson, Andreas, 1981-, et al.
(author)
-
Automation of composite manufacturing using off-the-shelf solutions; three cases from the aerospace industry
- 2015
-
In: ICCM International Conferences on Composite Materials. - : International Committee on Composite Materials.
-
Conference paper (peer-reviewed)abstract
- With an increased use of composite materials follows a need for rational, cost-efficient manufacturing processes. This paper explores how off-the-shelf solutions, developed for other purposes than composite manufacturing, can be used to build systems for automated composite manufacturing. Three demonstrators, each of them dealing with a specific type of material and all of them representing different manufacturing technologies for automated composite manufacturing, are presented and analyzed to find aspects that affect the ability to use off-the-shelf solutions. The three demonstrators target low to medium manufacturing volumes of complex products and they have been developed in collaboration with industrial partners within the aerospace industry. The conclusions drawn from the development of the demonstrators are that it is technically feasible to use off-the-shelf solutions in the three cases while adhering to the high quality standards of the industry. Furthermore three groups of aspects, quality aspects, product aspects and system aspects, which affect the ability to use off-the-shelf solutions for automated composite manufacturing, are identified.
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| 19. |
- Björnsson, Andreas, 1981-, et al.
(author)
-
Composite Manufacturing : How Improvement Work Might Lead to Renewed Product Validation
- 2012
-
In: Proceedings of the 5th International Swedish Production Symposium. - 9789175197524 ; , s. 505-513
-
Conference paper (peer-reviewed)abstract
- High-performance polymer composites are mainly used in applications where the benefits of high strength and low weight justify the high material and manufacturing costs. Many of these applications are found today in the aerospace, space and defense industries. Most of today’s commonly used manufacturing methods within this area are highly labor intensive. Furthermore, the quality requirements from the customers require a high level of process control. The purpose of this paper is to explore how changes that are introduced in order to improve productivity in a manufacturing system are managed, particularly with regard to who takes the decision to implement a change and how a change is validated. The study is based on qualitative interviews performed at several companies that manufacture composite components for the aerospace, space and defense sectors. The findings show that the responsibility for deciding to implement a change and the need for validating it are based on many diverse and interconnected factors. Therefore, it is difficult to construct guidelines for early assessment of the scope and cost of a proposed change. Hence each individual change request must be evaluated on its own. The study also shows that the validation process can be adapted to a level that is based on the type of change. In addition, it highlights that control over process parameters in manufacturing is essential.
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| 20. |
- Björnsson, Andreas
(author)
-
Enabling Automation of Composite Manufacturing through the Use of Off-The-Shelf Solutions
- 2014
-
Licentiate thesis (other academic/artistic)abstract
- Composite materials offer an appealing combination of low weight and high strength that is especially sought after in high-performance applications. The use of composite materials has and is continuing to increase, and the use of the material has been shown to provide substantial weight savings in for example aircraft design. With an increased use of composite materials follows an increased demand for cost-efficient manufacturing methods.Composite products are in many cases manufactured either by manual operations or by the use of complex automated solutions associated with high investment costs. The objective for this research is to explore an approach to develop automated composite manufacturing based on commercially available off-the-shelf solutions as an alternative to the existing automated solutions for composite manufacturing.The research, which was carried out in collaboration with industrial partners within the aerospace sector, is based on a demonstrator-centered research approach. Three conceptual demonstrators, focusing on three different manufacturing methods and a number of physical demonstrators, are used to show that off-the-shelf solutions can be used for automated manufacturing of composite products.Two aspects that affect if it is possible to use off-the-shelf solutions for automated composite manufacturing are the rigorous quality standards used by the aerospace industry and the great variety in product properties and material properties that is associated with composite manufacturing.The advantages in using off-the-shelf solutions has shown to be that the solutions generally are associated with low investments and that published information about the solutions, and the solutions themselves, is generally available for evaluation and testing. When working with the demonstrators it has been shown to be useful to break down a manufacturing system into basic tasks and consider off-the-shelf solutions for each particular task. This approach facilitates the search for a suitable off-the-shelf solution to solve a particular task. However, each of the separate tasks can affect other areas of the manufacturing system, and an overall systems perspective is required to find solutions that are compatible with the entire manufacturing system.
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| 21. |
- Björnsson, Andreas, 1981-, et al.
(author)
-
Robot-forming of prepreg stacks - Development of equipment and methods
- 2016
-
In: ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials. - : European Conference on Composite Materials, ECCM. - 9783000533877
-
Conference paper (peer-reviewed)abstract
- Within the aerospace industry the manufacturing of composite components with complex shapes, such as spars, ribs and beams are often manufactured using manual layup and forming of prepreg material. Automated processes for prepreg layup and efficient forming techniques like vacuum forming are sometimes difficult to employ to these type of products due to technical limitations. This paper describes the development of tools and the forming sequence needed to automate sequential forming of a complex shape using an industrial robot. Plane prepreg stacks are formed to the final shape using a dual-arm industrial robot equipped with rolling tools. Tests show that the developed tools and the employed sequence can be used to form stacks to the desired shape with acceptable quality.
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| 22. |
- Björnsson, Andreas, 1981-, et al.
(author)
-
Three-Dimensional Ultrasonic Cutting of RTM-Preforms – A Part of a High Volume Production System
- 2013
-
In: Proceedings of the 19th International Conference on Composite Materials, 28th July - 2nd August 2013, Montreal, Canada. - : Electronic Publishing BytePress.com. - 9780969679714 ; , s. 8960-8969
-
Conference paper (peer-reviewed)abstract
- The process parameters for an automated, three-dimensional ultrasonic cutting process of RTM-preforms are examined in order to find how they affect the cutting quality.
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| 23. |
- Bäckstrand, Jenny, 1979-, et al.
(author)
-
Mutual benefits – Linking SMEs in wood industry and HEIs using a translator
- 2022
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In: SPS2022. - Amsterdam : IOS Press. - 9781643682686 - 9781643682693 ; , s. 689-697
-
Conference paper (peer-reviewed)abstract
- The HEIs third mission is to collaborate with external organizations. In this paper we focus on how SMEs in wood industry can collaborate with HEI by using a link that can translate SMEs needs and challenges to HEIs offer. This is a first attempt to describe this function that we call translator. We have identified and described four translator roles in different scenarios in this paper.
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| 24. |
- Bäckstrand, Jenny, 1979-, et al.
(author)
-
Non-virgin textile materials challenging the purchasing role in a circular industry
- 2023
-
Conference paper (peer-reviewed)abstract
- In the era of moving towards a Circular Economy (CE), companies are facing challenges in redesigning their supply chains, towards managing i.e., recycled material and new requirements. Today, the textile industry is one of the segments that affects environmental sustainability most. Therefore, this paper’s purpose is to explore how non-virgin textile materials challenging the purchasing role in a circular industry, especially related to the perspective from Small and Medium-Sized Enterprises (SMEs). And the resulting research question is, therefore, what different challenges must a purchasing organization manage related to textile products in a circular industry.
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| 25. |
- Carlson, Annelie, et al.
(author)
-
REMAnufactuRing – Key enABLEr to future business (REMARKABLE)
- 2023
-
Conference paper (peer-reviewed)abstract
- Circularity through remanufacturingRemanufacturing can be described as a process of bringing used products to “like-new” functional state. It is an industrial process whereby products referred as cores are restored to useful life. During this process the core pass through a number of remanufacturing steps, e.g., inspection, disassembly, part replacement/refurbishment, cleaning, reassembly, and testing to ensure it meets the desired product standards’.Remanufacturing involves not only new processes but also necessitates changes in product design, the adoption of new business models, advancements in information management, and the inclusion of sustainability assessments. These assessments ensure that the new designs and circular business models implemented are not only circular but also sustainable. All these aspects form a crucial part of the REMARKABLE project, contributing to the development of a comprehensive remanufacturing ecosystem.The purpose of the REMARKABLE project is to support manufacturers to become more resilient, circular, and sustainable through remanufacturing and contribute to a more efficient use ofresources.Project activities and initial resultsThe REMARKABLE project involves six highly engaged manufacturing companies from a variety of sectors that will collaborate during 2022-2025. At first, workshops have taken place with each company to identify needs, challenges and ambitions. In addition, five student projects have been conducted during spring 2022 along with two study visits at participating companies.Initial company discussions shows that remanufacturing tends to question current business models and generate grounds for circular business models development (e.g. leasing, rental, deposit system). Remanufacturing often also questions the current value network and the actors in it, as remanufacturing flows can generate need of new business relationships whilst maintaining current business models.Remanufacturing poses challenges due to small batch sizes, low automation, and reliance on manual labor. Flexibility and specific capabilities are needed to handle uncertainties, complexity in planning, and ensure efficiency. Tools, methods, and frameworks are necessary to effectively balance all three pillars of sustainability. The development process of remanufacturing systems plays a critical role in achieving sustainability performance which also requires effective information management.Commonly, the products are not adapted for remanufacturing. Within the REMARKABLE project we are investigating how to make the products easier to remanufacture by design. This includes for example aspects of making the product easier to clean and disassemble.
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| 26. |
- Comstock, Mica, et al.
(author)
-
From mass production to mass customization : enabling perspectives from the Swedish mobile telephone industry
- 2004
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In: Production planning & control (Print). - : Informa UK Limited. - 0953-7287 .- 1366-5871. ; 15:4, s. 362-372
-
Journal article (peer-reviewed)abstract
- Much has been written about the conceptual nature of mass customization, and the success of several best business practitioners in the area have been well documented. Most companies, however, are not textbook examples of best practice, but rather are making incremental progress towards mass customization based on a mass-production heritage. This paper presents the findings of a case study that investigated a mass customization initiative at a leading mobile telephone manufacturer in Sweden. The primary objective of the study was to determine the implications of a radically new manufacturing initiative for the company – the production of a customized, entry-level mobile telephone. The differences between the traditional scenario of the mass production of standardized products at the company and that of the new customized production were also sought. The findings of the study, which are presented using the product, process and system perspectives, are aided by a number of customization-related frameworks from the literature. The discussion includes the impact of moving the customization order point downstream in the value chain in terms of increased efficiency and reduced lead times, the reduced requirement for manufacturing flexibility with shifting production system boundaries, and the company's status as a mass customizer.
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| 27. |
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| 28. |
- Comstock, Mica, et al.
(author)
-
Towards the mass customization of mobile telephones : current strategy and scenarios for realization at Ericsson
- 2001
-
In: Proceedings of the 16th International Conference on Production Research.
-
Conference paper (peer-reviewed)abstract
- The paradigm of Mass Production is being challenged in a number of industries where fragmented markets and the customer's desire for individualized products have become the norm. In the largest consumer electronics industry in the world, that of mobile telephones, manufacturers are well aware of these trends. Many of these same manufacturers are responding with Mass Customization, which has been defined as customized production at Mass Production efficiency and speed. This research, conducted at Ericsson Mobile Communications AB in Sweden, explores the implications of implementing a Mass Customization strategy for the production of mobile telephones. The paper begins with an objective presentation of Mass Customization, which lays the foundation for a discussion of the strategy's applicability at Ericsson and in the mobile telephone industry as a whole. The study focused on the past, present, and projected roles of customized production at the company, and investigated its potential for Mass Customization in the future. Two frameworks from the customized manufacturing literature guided the data collection and analysis in the case. Findings from the study point towards minimal, yet increasing customization at Ericsson, and highlight recent efforts towards the realization of increasingly customer-focused production there. The applicability of different Mass Customization scenarios for Ericsson and its industry is also discussed.
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| 29. |
- Diffner, Björn
(author)
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Combining Flexibility and Efficiency in Automotive Assembly : Preparing for New Powertrain Vehicles
- 2011
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Licentiate thesis (other academic/artistic)abstract
- Global warming and peak oil are drawing attention to new types of energy technologies. Since transportation is one of the main contributors to carbon emissions and one of the biggest consumers of oil, new technologies to propel vehicles are being introduced. For the automotive industry, where the Internal Combustion Engine (ICE) has had complete dominance for some hundred years, the transition to new powertrains will be challenging for the entire operation.These new powertrain vehicles must not only be developed and tested, which is an enormous challenge in itself; they must also be manufactured with the same efficiency as ICE vehicles in order to reach a competitive price. There is great uncertainty regarding which powertrain solution will become the next paradigm, or even if there will be a new propulsion paradigm as dominant as the ICE. This, in combination with the fact that these new powertrain vehicles will initially be produced in relatively small volumes, probably calls for them to be produced in current manufacturing facilities mixed with ICE vehicles. This challenge is the foundation for this research.In order to manage the manufacturing challenges related to the introduction of new powertrain vehicles, both theoretical and empirical data have been analysed in this research. The empirical data is taken mainly from interviews, the author’s own observations and workshops with Volvo Cars and SAAB Automobile.In order to produce new powertrain vehicles in existing facilities, flexibility are identified as central components in this research. However, the flexibility needs to be achieved without affecting the efficiency of the manufacturing system. To achieve flexible automotive final assembly, four key flexibilities are identified in this research:Mix FlexibilityNew Product FlexibilityModification FlexibilityVolume FlexibilityTo achieve these flexibilities, three key factors are identified and investigated in this research:Mixed ModelAssemblyModularityPlatform StrategyThis research describes these key factors’ relationship with one another, as well as their relationship to the key flexibilities. This research describes how the key factors are used to achieve flexibility in current final assembly, and how they can be used in future automotive final assembly. This is presented as a relationship model to combine flexibility and efficiency in automotive final assembly.A first step towards a stringent automotive product architecture-platform-vehicle structure is presented, along with key factors that are important in a successful automotive platform strategy. Guidelines are also described for how new powertrain vehicles should be designed in order to achieve as efficient final assembly as possible.
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| 30. |
- Diffner, Björn, et al.
(author)
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Manufacturing Challenges Associated With the introduction of New Powertrain Vehicles
- 2011
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In: Proceedings of 21st International Conference on Production Research ICPR21. - 9783839602935
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Conference paper (other academic/artistic)abstract
- For the automotive industry, where the Internal Combustion Engine (ICE) has had complete dominance, the transition to new powertrains will be challenging. The new powertrain vehicles must be manufactured with the same efficiency as ICE vehicles in order to reach a competitive price. This article explores some of the manufacturing challenges related to workload differences in current products and those associated with the introduction of new powertrain vehicles in a Mixed Model Assembly line for ICE vehicles. Three possible solutions to workload differences are described in theory, including how they are used in the current manufacturing system and how they might be used when introducing new powertrain vehicles. The solutions found were sequencing, dedicated assembly stations and modularity. In conclusion, it is suggested that modularity is the most efficient method in terms of flexibility and utilization, and some design approaches to facilitate efficient manufacturing are also suggested.
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| 31. |
- Diffner, Björn, et al.
(author)
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Successful Automotive Platform Strategy – Key Factors
- 2011
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In: Proceedings of the 4th International Swedish Production Symposium. ; , s. 85-92
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Conference paper (other academic/artistic)abstract
- This article aims to describe the benefits, problems and challenges associated with a platform strategy. Based on theoretical and empirical studies, some key factors for a successful platform strategy are identified and discussed. This paper also explores how a successful platform strategy in the automotive industry should be designed. There is no stringent platform definition in the automotive industry, and the definition varies between different manufacturers and over time. A literature review has been completed to identify some key factors in successful platform strategies. The identified factors are as follows: Bill of Process, Hard Points, Wheelbase, Track Width, Powertrain Architecture and Drive Wheel Positioning. These factors were then investigated at both SAAB Automobile and Volvo Cars through the authors´ own observations conducted during factory visits and interviews. This was done in order to evaluate the identified factors from their effect on the production system and the final product. These factors are considered important to be able to get scale benefits from the use of common components and production processes, at the same time as they allow vehicles to be tailored for different markets and customer needs.
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| 32. |
- Diffner, Björn, et al.
(author)
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To stay competitive in future automotive assembly – Some challenges related to flexibility
- 2011
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In: Proceedings of the 2nd International Conference on Industrial Engineering and Operations Management (IEOM 2012). - 9780980825107 ; , s. 62-67
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Conference paper (other academic/artistic)abstract
- The undergoing adaptation of mass customization, alongside the development and demand for new power trains, is challenging the manufacturing system of automotive manufacturers. This, in combination with demands from emerging markets and constantly decreasing product lifecycles, calls for increased flexibility. Based on the research findings, key flexibility types for the automotive industry were identified as Mix, New Product, Modification and Volume flexibility. To achieve these flexibilities, the mixed model assembly, modularity and platform strategies are identified as important factors. A generic BOP as part of the platform strategy is central to enable transferring of production.
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| 33. |
- Elnourani, Mohamed, et al.
(author)
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Enabling Factors for Circularity in the Metal Cutting Industry - With Focus on High-Value Circular Tools
- 2024
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In: Advances in Transdisciplinary Engineering. - : IOS Press. - 9781643685106 - 9781643685113 ; , s. 502-519, s. 502-519
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Conference paper (other academic/artistic)abstract
- Metal cutting industry, a key sector in manufacturing, is grappling with the transition to a "net-zero industry" to mitigate climate change and reach sustainable practices. Rare and exclusive materials make recycling and reusing cutting tools more pressing and necessitate efficient circular material flows. The purpose of this research is to explore how collaboration can facilitate circularity in the cutting tool industry. It examines the involvement of stakeholders and their roles in achieving a circular lifecycle for cutting tools. To investigate the interaction between metal cutting tools suppliers and Small and Medium-sized Enterprises (SMEs), this study used a mixed-methods approach that includes data from literature, interviews, and document study. Empirical data is gathered to investigate the factors driving circularity and to identify important participants in the lifecycle of cutting tools. The study revealed challenges to the current situation including underutilization of tools due to the absence of a standardization process and subjective operator judgment, as well as lack of traceability of the tools both internally at SMEs and between the stakeholders. Moreover, by mapping the current actors, the study found cutting tool traceability, undirected decision-making throughout tool lifecycles, and limited awareness of circularity dimensions are key challenges. To handle these challenges. 9Rs circular economy framework used to investigate the possible role of collaboration emerges as a vital enabler for circularity, with SMEs playing a significant role. Moreover, the involvement of machine operators, often overlooked actors, is found to be crucial in influencing circular outcomes. Digital solutions and collaborative strategies that involve CNC machine suppliers and intermittent refurbishing business are pivotal in overcoming the challenges identified, namely, traceability and human subjectivity in tool condition assessment. The study demonstrates that technology providers, intermediary refurbishing businesses, SMEs and other stakeholders operating in the metal cutting tools sector must be involved throughout their lifetime to avoid suboptimal results, exchange information, and inspire industrial actors to support the circular economy.
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| 34. |
- Elo, Kristofer, 1983-
(author)
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Automation in the Recycling Industry : Recycling of Plastic and Large Liquid Crystal Displays
- 2013
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Licentiate thesis (other academic/artistic)abstract
- In a world of growing population and increasing prosperity, the demand for new high-technology products is increasing together with the demand for rawmaterials. To be able to deal with the demand for new raw materials and the increasing amount of waste, the recycling industry needs to prepare itself to cope with these changes. If the waste can become the new raw materials, then the recycling industry has a bright future. The implementation of new ways to recycle products can be the solution to succeeding in this challenge.The objective of this research is to investigate, from a technical perspective, automation in the recycling industry. More specifically, the objective is to identify problems and solutions in the recycling of plastics and large liquid crystal displays in order to better cope with current recycling requirements.This research was inspired by the research methodologies of industry-aslaboratory, action research, experimental research and two concept development methods.The results related to the recycling of plastics come from a theoretical investigation of the possibilities for a plastic sorting facility. The investigation resulted in two concepts for recycling systems, implementable with today’s stateof-the-art technology and a more futuristic concept for sorting and separating the different plastics of interest. The systems are designed with standardised processes and are arranged in a flexible way to be able to manage with current industrial requirements.The results related to large liquid crystal displays include a clarification of the requirements for an automatic recycling plant, concept generation, and practical testing of different technologies. Two preferred processes for dismantle large liquid crystal displays are the circle saw and band saw. Additional results are the semi-automatic process structure to manage with current industrial requirements for large liquid crystal displays.
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| 35. |
- Ettehad, Melina, et al.
(author)
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Challenges for Textile SMEs to Reach Sustainability
- 2023
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In: Production Processes and Product Evolution in the Age of Disruption. - : Springer. - 9783031348204 - 9783031348211 ; , s. 393-403
-
Conference paper (peer-reviewed)abstract
- The textile industry has a significant environmental impact while at the same time playing an important role in society. There is a need to improve the textile industry's sustainability. Textile SMEs encounter numerous challenges to reach sustainability. This paper aims at recognizing the challenges by collecting, analyzing, and discussing some theoretical and empirical data. At the end of this paper, six main groups of challenges are presented: lack of stakeholder knowledge about sustainability, lack of resources, lack of communication, and effective legislation. Also, recognizing the relevant needs and finding some conceptual solutions for textile SMEs to overcome the challenges and reach more sustainability are considered as future work of this study.
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| 36. |
- Fredriksson, Anna, 1979-, et al.
(author)
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What are the differences between related offset and outsourcing? : A case study of a related offset business at Saab
- 2016
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In: International Journal of Technology Transfer and Commercialisation. - : InderScience Publishers. - 1470-6075 .- 1741-5284. ; 14:2, s. 132-149
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Journal article (peer-reviewed)abstract
- Recently, offset contracts have become more complex. For the seller to carry through and review the effects and the demands of an offset contract, they need a framework.The paper identifies five main differences between outsourcing and related offset, which are translated into activities to be included in a suggested related offset framework. The paper is based on an in-depth case study of a related offset business at Saab, a Swedish military aircraft producer. The analysis compared the studied case with an existing outsourcing process identified in literature. The paper contributes by providing an overview of the activities taking place during a related offset process and showing the effect of the different hierarchical levels involved in the process on the efficiency of the fulfilment of the offset business. This paper is based on a single case study, and the suggested differences should be verified through further case studies.
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| 37. |
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| 38. |
- Gopinath, Varun, et al.
(author)
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Collaborative Assembly on a Continuously Moving Line - An Automotive Case Study
- 2018
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In: 28TH INTERNATIONAL CONFERENCE ON FLEXIBLE AUTOMATION AND INTELLIGENT MANUFACTURING (FAIM2018): GLOBAL INTEGRATION OF INTELLIGENT MANUFACTURING AND SMART INDUSTRY FOR GOOD OF HUMANITY. - : ELSEVIER SCIENCE BV. ; 17, s. 985-992
-
Conference paper (peer-reviewed)abstract
- Collaborative operation is a state in which a purposely designed robot system and an operator work within a collaborative workspace. To ensure a safe working environment, safety standards suggest conducting a task-based risk assessment followed by risk reduction to reduce the risks to an acceptable level. In this article, an automotive case study will be used to understand safety issues associated with collaborative operations with large industrial robots. Based on this case study, a layout of the collaborative workstation, in terms of workspaces and tasks, which is the outcome of a risk assessment program will be presented. The first critical step in risk assessment is hazard identification, which can allow the risk assessing team to evaluate the hazards and suggest measures to mitigate the risks. Therefore, the hazards identified during the risk assessment program will also be detailed along with measures to mitigate the risks and is expected to complement our understanding of the nature of hazards associated with collaborative operations with large industrial robots. (C) 2018 The Authors. Published by Elsevier B.V.
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| 39. |
- Gopinath, Varun, 1982-, et al.
(author)
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Demonstrators to support research in Industrial safety - A Methodology
- 2018
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In: Procedia Manufacturing. - : ELSEVIER SCIENCE BV. - 2351-9789. ; 17, s. 246-253
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Journal article (peer-reviewed)abstract
- Activities to support manufacturing research are carried out with the intention to gain knowledge of industrial problems and provide solutions that addresses these issues. In order for solution to be viable to the industry, research activities are carried out in close collaboration with participants from the industry, academia and research institutions. Interactive research approach motivates participants with multi-disciplinary perspective to collaborate and emphasizes joint learning in the change process. This article, presents a methodology, where participants with different expertise can collaborate to develop safety solutions. The concept of a demonstrator, which represents cumulative result of a series of research activities, is presented as a tool to showcase functioning and design intent in a collaborative research environment. The results of a pilot study, where manufacturing professionals evaluated design decisions that resulted in a demonstrator, will be presented. (C) 2018 The Authors. Published by Elsevier B.V.
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| 40. |
- Gopinath, Varun, 1982-, et al.
(author)
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Design Criteria for a Conceptual End-effector for Physical Human-Robot Production Cell
- 2014
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In: Proceedings of The 6th International Swedish Production Symposium 2014. - Gothenburg : Chalmers Conferences. - 9789198097412 ; , s. 1-7
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Conference paper (peer-reviewed)abstract
- Speed, precision and repeatability are virtues of industrial robots which are relied on by manufacturing firms but also necessitates segregating them within controlled fenced areas. Therefore, industrial robots cannot cooperate with line workers in assembling task. With recent developments in robotics, new possibilities have emerged that can enable manufacturing firms to be flexible and cost effective. This paper presents preliminary results from investigations into the possibility of a man-machine production cell where plastic panels are assembled under the car. A conceptual man-machine collaborative production cell will be presented detailing characteristics required to ensure safety.
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| 41. |
- Gopinath, Varun, 1982-
(author)
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On Safe Collaborative Assembly With Large Industrial Robots
- 2019
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Doctoral thesis (other academic/artistic)abstract
- This thesis pertains to industrial safety in relation to human-robot collaboration. The aim is to enhance understanding of the nature of systems where large industrial robots collaborate with humans to complete assembly tasks. This understanding may support development and safe operations of future collaborative systems.Industrial robots are widely used to automate manufacturing operations across several industries. The automotive industry is the largest user of robots and have identified robot-based automation as a strategy to improve efficiency in manufacturing operations.Recently, a class of machines referred to as collaborative robots have been developed by robot manufacturers to support operators in assembly tasks. The use of these robots to support human workers in an industrial context are referred to as collaborative operations.Presently, collaborative robots have limited reach and load carrying capacity compared to standard industrial robots. Large/standard industrial robots are widely used for applications such as welding or painting. They can, in principle support operators in assembly tasks as well.Two laboratory demonstrators representing the final results from a series of research activities will be presented. They were developed to investigate issues related to personnel and process safety while working with large industrial robots in collaborative operations. The demonstrators were partially based on assembly workstations that are currently operational and they exemplify challenges faced by the automotive industry.Demonstrator-based Research, a methodology for collaborative research that emphasizes development of demonstrators as a research tool, forms the rationale for carrying out research operations presented in this thesis. An evaluation of the laboratory demonstrators by industrial participants suggests an increased interest and confidence in collaborative operations with large robots. The demonstrators have served as a tentative platform for participants to identify and discuss manufacturing and safety challenges in relation to their organization.A main outcome presented in this thesis relates to specifying requirements for introducing robots in a human-populated environment. Introducing robotic systems in new environments requires reconsideration of the nature of the hazards particular to the domain. An analysis of the laboratory demonstrators suggest that, in addition to hazards associated with normal functioning of the system, limitations in human cognition must be considered. These results will be exemplified and discussed in the context of situational and mode awareness. Additionally, a model of a collaborative workstation will be presented in terms of three constituents – workspace, tasks and interaction.This is particularly significant considering the direction of present-day research aimed at introducing robots across various industries and working environments. In response to this trend, this thesis discusses the relevance of Interactive Research and its emphasis on joint learning that goes on between academic researchers and industrial participants as a valuable principle for collaborative research.
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| 42. |
- Gopinath, Varun, 1982-, et al.
(author)
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Risk Assessment for Collaborative Operation : A Case Study on Hand-Guided Industrial Robots
- 2018
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In: Risk Assessment. - : InTech. - 9789535137986 - 9789535137993
-
Book chapter (peer-reviewed)abstract
- Risk assessment is a systematic and iterative process, which involves risk analysis, where probable hazards are identified, and then corresponding risks are evaluated along with solutions to mitigate the effect of these risks. In this article, the outcome of a risk assessment process will be detailed, where a large industrial robot is used as an intelligent and flexible lifting tool that can aid operators in assembly tasks. The realization of a collaborative assembly station has several benefits, such as increased productivity and improved ergonomic work environment. The article will detail the design of the layout of a collaborative assembly workstation, which takes into account the safety and productivity concerns of automotive assembly plants. The hazards associated with hand-guided collaborative operations will also be presented.
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| 43. |
- Gopinath, Varun, 1982-, et al.
(author)
-
Risk Assessment for Collaborative Operation : A Case Study on Hand-Guided Industrial Robots
- 2018
-
In: Risk Assessment. - London/Rijeka : InTech. - 9789535137986 - 9789535140634 - 9789535137993 ; , s. 167-187
-
Book chapter (peer-reviewed)abstract
- Risk assessment is a systematic and iterative process, which involves risk analysis, where probable hazards are identified, and then corresponding risks are evaluated along with solutions to mitigate the effect of these risks. In this article, the outcome of a risk assessment process will be detailed, where a large industrial robot is used as an intelligent and flexible lifting tool that can aid operators in assembly tasks. The realization of a collaborative assembly station has several benefits, such as increased productivity and improved ergonomic work environment. The article will detail the design of the layout of a collaborative assembly workstation, which takes into account the safety and productivity concerns of automotive assembly plants. The hazards associated with hand-guided collaborative operations will also be presented.
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| 44. |
- Gopinath, Varun, et al.
(author)
-
Risk Assessment Process for Collaborative Assembly - A Job Safety Analysis Approach
- 2016
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In: 6th CIRP Conference on Assembly Technologies and Systems (CATS). - : Elsevier. ; , s. 199-203
-
Conference paper (peer-reviewed)abstract
- International safety standards state that risk assessment is the first step in understanding and eliminating hazardous work environment. The traditional method of risk assessment using Job Safety Analysis, where sequential tasks of the operator are analysed for potential risks, needs to be adapted to applications where humans and robots collaborate to complete assembly tasks. This article proposes a novel approach by placing equal emphasis on various participants working within their workspaces. An industrial case study wil be used to showcase the merits of the process when used at an early stage in the development of a collaborative assembly cell.
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| 45. |
- Gopinath, Varun, 1982-, et al.
(author)
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Safe Assembly Cell Layout through Risk Assessment : An Application with Hand Guided Industrial Robot
- 2017
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In: Proceedings of the 50th CIRP Conference on Manufacturing Systems. - : Elsevier. ; , s. 430-435, s. 430-435
-
Conference paper (peer-reviewed)abstract
- Risk assessment is a systematic and iterative process which involves risk analysis where the probable hazards are identified and corresponding risks are evaluated along with solutions to mitigate the effect of these risks. In this article the outcome of a risk assessment process will be detailed where a large industrial robot is being used as a intelligent and flexible lifting tool that can aid operators in assembly tasks. The realization of a collaborative assembly station has several benefits such as increased productivity and improved ergonomic work environment. The article will detail the design of the layout of a collaborative assembly cell which takes into account the safety and productivity concerns of automotive assembly plants.
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| 46. |
- Gopinath, Varun, 1982-, et al.
(author)
-
Safe Collaborative Assembly on a Continuously Moving Line with Large Industrial Robots
- 2021
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In: Robotics and Computer-Integrated Manufacturing. - : Elsevier. - 0736-5845 .- 1879-2537. ; 67
-
Journal article (peer-reviewed)abstract
- Robot safety standards defines Collaborative Operation as a state in which purposely designed robots work in direct cooperation with a human within a defined workspace. That is, an operator and an industrial robot complete assembly tasks at the collaborative workspace. A prerequisite to ensuring safety during all phases of operation is an understanding of the nature of hazards pertinent to collaborative systems. An automotive assembly station, where plastic panels are assembled on a continuously moving line, formed the basis for research operations meant to understand safety issues when a large industrial robot aids an operator in assembly tasks. This led to the development of a laboratory demonstrator whose design and functioning will be presented in this article. Additionally, the hazards identified during risk assessment along with measures to mitigate the associated risks will be presented in order to highlight the nature of hazards pertinent to collaborative systems.
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| 47. |
- Gopinath, Varun, 1982-, et al.
(author)
-
Safety-Focussed Design of Collaborative Assembly Station with Large Industrial Robots
- 2018
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In: Procedia Manufacturing. - : Elsevier. - 2351-9789. ; 25, s. 503-510
-
Journal article (peer-reviewed)abstract
- The perceived benefits of large industrial robots for collaborative operations are characteristics such as long reach with heavy load carrying capability. Collaborative operations refers to situations where operators and robots share a workspace to complete tasks in close proximity. This mode of operation coupled with the physical characteristics of large robots represents high risks to injury and for these reasons, the safeguarding of the workspaces needs to be achieved in conjunction with the tasks to be performed within the workstation. This article will detail two workstations that was developed in a laboratory environment and are partial results of a research project titled ToMM2, whose aim was to understand safety issues associated with collaborative operations with large robots.
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| 48. |
- Gopinath, Varun, 1982-, et al.
(author)
-
Understanding situational and mode awareness for safe human-robot collaboration : case studies on assembly applications
- 2019
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In: Production Engineering. - : Springer. - 0944-6524 .- 1863-7353. ; 13:1, s. 1-9
-
Journal article (peer-reviewed)abstract
- In order for humans and robots to collaborate on an assembly line, safety of operations is a prerequisite. In this article, two assembly stations where a large industrial robots collaborate with humans will be analysed with the aim to 1. determine the characteristics of hazards associated with human-robot interaction and 2. design solutions that can mitigate risks associated with these hazards. To support the aim of this article, a literature review will attempt to characterize automation and detail the problems associated with human-automation interaction. The analysis points at situational awareness and mode-awareness as contributing factors to operator and process safety. These underlying mechanisms, if recognised by the risk assessment team as hazards, can mitigate risks of operator injury or production delays. This article details the function of visual and physical interfaces that allow operators to comprehend system-state in order to avoid undesirable situations.
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| 49. |
- Grahn, Sten, et al.
(author)
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Exploring a Model for Production System Design to Utilize Large Robots in Human-Robot Collaborative Assembly Cells
- 2018
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In: Procedia Manufacturing. - : Elsevier B.V.. - 2351-9789. ; 25, s. 612-619
-
Conference paper (peer-reviewed)abstract
- It has been shown that large robots can be safely installed for human-robot collaborative assembly cells in experimental setups. It has also been found that these installations require demanding considerations of a significant number of layout and safety parameters. This indicates that successful commercial implementations will require a resource efficient model for production system design that anticipates utilization of large robots in collaborative settings. Experiences from experimental setups have been used to explore a basic model for such production system design, to stimulate a discussion regarding what model characteristics should be tested and validated in future research.
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| 50. |
- Grahn, Sten, et al.
(author)
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Potential Advantages Using Large Anthropomorphic Robots in Human-robot Collaborative, Hand Guided Assembly
- 2016
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In: Procedia CIRP. - : Elsevier. - 2212-8271. ; 44, s. 281-286, s. 281-286
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Journal article (peer-reviewed)abstract
- Collaborative robot installations often mean man-machine workspace sharing. This mode of operation can lead to reductions of tact time and work space requirements. We have analyzed potential further benefits of man-machine collaboration, where operators and powerful robots share workspace, cooperating when lifting and handling large objects. We found that this mode of operation has the potential to generate economic advantages by reducing the need for manual operators and lifting tools and by offering new opportunities for component logistics.
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