| 1. |
- Adlemo, Anders, et al.
(författare)
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Semi-Automatic Generation of a Fuzzy Inference System in a Reshoring Context
- 2020
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Ingår i: SPS2020. - : IOS Press. - 9781643681467 - 9781643681474 ; , s. 599-609
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Konferensbidrag (refereegranskat)abstract
- Reshoring can be regarded as offshoring in reverse. While offshoring mainly has been driven by cost aspects, reshoring considers multiple aspects, such as higher quality demands, faster product delivery and product mass-customization. Where to locate manufacturing is usually a purely manual activity that relies on relocation experts, hence, an automated decision-support system would be extremely useful. This paper presents a decision-support system for reshoring decision-making building a fuzzy inference system. The construction and functionality of the fuzzy inference system is briefly outlined and evaluated within a high-cost environment considering six specific reshoring decision criteria, namely cost, quality, time, flexibility, innovation and sustainability. A challenge in fuzzy logic relates to the construction of the so called fuzzy inference rules. In the relocation domain, fuzzy inference rules represent the knowledge and competence of relocation experts and are usually generated manually by the same experts. This paper presents a solution where fuzzy inference rules are automatically generated applying one hundred reshoring scenarios as input data. Another important aspect in fuzzy logic relates to the membership functions. These are mostly manually defined but, in this paper, a semi-Automatic approach is presented. The reshoring decision recommendations produced by the semi-Automatically configured fuzzy inference system are shown to be as accurate as those of a manually configured fuzzy inference system.
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| 2. |
- Boldt, Simon, et al.
(författare)
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Evaluation of Reconfigurability in Brownfield Manufacturing Development
- 2020
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Ingår i: SPS2020. - Amsterdam : IOS Press. - 9781643681467 - 9781643681474 ; , s. 513-524
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Konferensbidrag (refereegranskat)abstract
- To enable manufacturing firms adapting their manufacturing capabilities to meet the market demands in a cost-efficient way the concept of reconfigurable manufacturing was initiated. A majority of the research within this field targeting production development has been focused on greenfield development methods, enabling the developers to ignore context and constraints that brownfield development methods cannot. The greenfield focus in reconfigurability research has resulted in how to find optimal solutions to reconfiguration problems. Taking a brownfield focus on reconfigurable manufacturing development would enable to move step-by-step towards a reconfigurable manufacturing strategy instead of the all-or-nothing approach of greenfield development methods. This study investigates through a literature review what assessment tools and methods that exists in literature, and classifies them into four categories, i.e. Configuration evaluation, Element of evaluation, Pre-design evaluation, and Potential evaluation. It is found that there only exist two assessment tools for potential evaluation. Through a multiple case study, the potential evaluation process is evaluated, and three gaps is identified, i.e. lack of connection to strategy, lack of predefined goals for reconfigurability, and the difficulty in interpreting the result of the analysis. These gaps are then address in a new conceptual assessment process for assessing the potential of reconfigurability. The conceptual assessment process links the six reconfigurability characteristics throughout the whole assessment process to link manufacturing strategy to the improvement suggestions.
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| 3. |
- Centerholt, Victor, et al.
(författare)
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Value Chains vs. Ecosystems : Current Perspectives among Swedish SMEs Entering the Interconnected World of IoT
- 2020
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Ingår i: Advances in Transdisciplinary Engineering at SPS2020. - : IOS Press BV. - 9781614994398 ; , s. 489-500, s. 489-500
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Konferensbidrag (refereegranskat)abstract
- Smart connected industrial products and the Internet of Things (IoT) are transforming the industrial business landscape in a radical way. To reach the full potential of IoT-Technologies manufacturing firms are forced to rethink almost every aspect of their value creation process. To utilize this promising digital technology and to cope with the new market conditions of IoT environments, research shows that industrial firms have to make a fundamental shift in value creation logic and break free from the value chain perspective of business. Instead they have to embrace a view where value is co-created within ecosystems in both a vertical and a horizontal manner. By exploring the value creation logic of small and medium sized (SME) Swedish industrial machinery manufacturers, this study contributes to a deeper understanding of how manufacturing firms view their value creation processes and how aligned this logic is to the latest research in IoT. The study found that Swedish industrial machine manufacturers do understand the transformative force of IoT-Technologies and see great business opportunities to utilize IoT in their business. The study, however, identified a lack of co-creation and difficulties in embracing an ecosystem perspective. While quick to embrace change on a technical level, respondents still adhere to a firm-centric and linear perspective of value creation, with a strong attachment to the value chain concept. The study suggests that it is not a lack of technical proficiency or engineering know-how, but rather an adherence to goods-dominant logic and attachment to the value chain concept that prevent Swedish SME manufacturers from fully embracing the growing market of industrial IoT. Hence, we see an urgent need for both practitioners and academia to shift their attention from the dazzling potential of cutting-edge technologies to the nitty-gritty business of incorporating co-creation and ecosystem-Thinking into current business practices. © 2020 The authors.
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| 4. |
- Eynian, Mahdi, 1980-, et al.
(författare)
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Studies on surface roughness in stable and unstable end-milling
- 2020
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Ingår i: SPS2020. - : IOS Press. - 9781643681467 - 9781643681474 ; , s. 465-474
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Konferensbidrag (refereegranskat)abstract
- Surface roughness is an important aspect of a machined piece and greatly influences its performance. This paper presents the surface roughness of end-milled aluminium plates in stable and unstable machining conditions at various spindle speed and depth of cuts machined with cylindrical end-mills. The surface roughness is measured using high-resolution surface replicas with a white light interferometry (WLI) microscope. The measurements of the end-milled floors show that the surface roughness as long as the cutting is performed in stable conditions is insensitive to the depth of cut or spindle speed. In contrast, within chattering conditions, which appear according to stability lobes, surface roughness values increase almost 100%. While at the valleys of the stability lobe diagram, there is a gradual increase in roughness, at the peaks of the stability lobe, the transition from the stable to unstable condition occurs with a sudden increase of the roughness values. In the study of down-milled walls, while the roughness increases with the depth of cut within both the stable and the chattering regions, the transition from the stable to chattering condition can lead to a much larger increase in the surface roughness. These results could be used for strategic selection of operation considering the needs of robustness and possible variation of dynamic parameters that can affect the position of the cutting conditions within the stability lobe diagrams.
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| 5. |
- Garcia Rivera, Francisco, 1994-, et al.
(författare)
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Using Virtual Reality and Smart Textiles to Assess the Design of Workstations
- 2020
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Ingår i: SPS2020. - Amsterdam : IOS Press. - 9781643681467 - 9781643681474 ; , s. 145-154
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Konferensbidrag (refereegranskat)abstract
- This paper presents a solution that integrates a smart textiles systemwith virtual reality to assess the design of workstations from an ergonomics pointof view. By using the system, ergonomists, designers, engineers, and operators,can test design proposals of workstations in an immersive virtual environmentwhile they see their ergonomics evaluation results displayed in real-time.. Thesystem allows its users to evaluate the ergonomics of the workplace in a preproduction phase. The workstation design can be modified, enabling workstationdesigners to better understand, test and evaluate how to create successfulworkstation designs, eventually to be used by the operators in production. Thisapproach uses motion capture together with virtual reality and is aimed tocomplement and integrate with the use of digital human modelling (DHM)software at virtual stages of the production development process.
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| 6. |
- Gonçalves Machado, Carla, 1975, et al.
(författare)
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Maturity Framework Enabling Organizational Digital Readiness
- 2020
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Ingår i: Advances in Transdisciplinary Engineering at SPS2020. - Amsterdam : IOS Press BV. - 9781614994398 ; , s. 649-660, s. 649-660
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Konferensbidrag (refereegranskat)abstract
- Digitalization and the use of advanced technologies for more flexible and resource efficient production processes are changing the industrial competitive environment. However, new technologies are not seldom implemented without the whole organization being ready to fully utilize its benefits. This readiness can be expressed as organizational digital maturity. Previous studies identified that the level of digitalization is increasing, but, in many cases, due to lack of foundation, it is not aligned with the business strategy and/or supported by the organizational and technological infrastructures. There is a gap in existing models to provide practical starting-up steps to support the organizational digital readiness. A conceptual readiness framework for organizational digital readiness was tested through the analysis and reflection of four cases implemented by a Swedish manufacturing company. Findings point out that it is important to create a proper organizational foundation, a readiness, to ensure a company to evolve in digital maturity. That can be developed based on three main stages of change management practices. The tool can be used to identify the organizational readiness and thereby the gaps and thresholds necessary to overcome. This will enable companies to utilize the technology level necessary to increase cost and resource efficiency, and hence competitiveness. In addition, dimensions and a roadmap for organizational, digital, and smart readiness is presented. © 2020 The authors
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| 7. |
- Hanning, Fabian, et al.
(författare)
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The Effect of Grain Size on theSusceptibility Towards Strain Age Crackingof Wrought Haynes® 282®
- 2020
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Ingår i: SPS 2020. - Amsterdam : IOS Press. - 9781643681467 - 9781643681474 ; 13, s. 407-416
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The effect of grain size on the suceptibility towards strain age cracking (SAC) has been investigated for Haynes® 282® in the tempeature range of 750 to 950°C after isothermal exposure up to 1800s. Grain growth was induced by heattreating the material at 1150°C for 2h, resulting in a fourfold increase in grain size. Hardness was significanlty reduced after heat treatment as compared to millannealed material. Large grain size resulted in intergranular fracture over a widertemperature range than small grain size material. Ductility was lowest at 850°C, while lower values were observed to be correlated to increased grain size. The rapid formation of grain boundary carbide networks in Haynes® 282® is found to be notable to compensate for higher local stresses on grain boundaries due to incresedgrain size.
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| 8. |
- Iriondo Pascual, Aitor, 1993-, et al.
(författare)
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Optimizing Ergonomics and Productivity by Connecting Digital Human Modeling and Production Flow Simulation Software
- 2020
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Ingår i: SPS2020. - Amsterdam : IOS Press. - 9781643681467 - 9781643681474 ; , s. 193-204
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Konferensbidrag (refereegranskat)abstract
- Simulation software is used in the production development process to simulate production and predict behaviors, calculate times, and plan production in advance. Digital human modeling (DHM) software is used to simulate humans working in production and assess whether workstation designs offer appropriate ergonomic conditions for the workers. However, these human simulations are usually carried out by human factors engineers or ergonomists, whereas the production simulations are carried out by production engineers. Lack of integration of these two simulations can lead to suboptimal solutions when the factory is not optimized to improve both productivity and ergonomics. To tackle this problem, a platform has been developed that connects production flow simulation software data and DHM software data and integrates them in a generic software for data treatment and visualization. Production flow simulation software data and DHM software data are organized in a hierarchical structure that allows synchronization between the production data and the ergonomic data on the target simulation software. The platform is generic and can be connected to any production flow simulation software and any DHM software by creating specific links for each software. The platform requires only the models of the production line, workstations, and tasks in order to perform the simulations in the target simulation software and collect the simulation results to present the results to the user of the platform.
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| 9. |
- Kurilova-Palisaitiene, Jelena, 1985-, et al.
(författare)
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How an OEM can become circular with remanufacturing : the case of robotic lawn mowers
- 2020
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Ingår i: SPS2020. - : IOS Press. - 9781643681467 - 9781643681474 ; , s. 261-272
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Konferensbidrag (refereegranskat)abstract
- The consumption of resources is at an alarmingly high level, and there is a high need for resource-efficient alternatives to manufacturing. Remanufacturing is one way to reduce the use of both materials and energy, while still providing products with a like-new condition. This paper aims to define critical areas to assess when applying remanufacturing to original equipment manufacturers (OEMs). The research was conducted by interweaving remanufacturing’s role in a circular economy (CE) with a single case study at a robotic lawn mower OEM. The case study was split into three parts that separately investigated customer demand, product design and economic sustainability, respectively, all in the area of remanufacturing. This paper addressed the research gap in OEM strategy towards a CE with remanufacturing, defining five critical areas to assess when applying remanufacturing to OEMs: customer, product, sustainability (economic, environmental and social), business model, and production system. The findings of the paper could be useful for many OEMs willing to shift to a CE with remanufacturing.
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| 10. |
- Lennartsson, Martin, et al.
(författare)
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Framework for Digital Development in Industrialized Housebuilding
- 2020
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Ingår i: SPS2020. - Amsterdam : IOS Press. - 9781643681467 - 9781643681474 ; , s. 335-345
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Konferensbidrag (refereegranskat)abstract
- Building Information Modelling (BIM) is claimed to transform the Architecture, Engineering and Construction (AEC) industry, whereas current research has argued that diffusion of BIM use proceeds at a slower rate than the optimistic predictions. Despite that potential of BIM is higher in industrialized housebuilding, the trade express similar characteristics as traditional construction both in terms of BIM sue but also organization of assets. The aim of this paper is to present a conceptual framework for digital development in industrialized timber housing. Data were gathered from eight industrialized housebuilding companies in a mixed approach with interviews, focus groups and a survey. The analysis presents the current use of BIM and digital tools and prioritized development areas within this domain. By adding a theoretical overview of current research for industrialized housebuilding with focus on platform strategies and digital development a framework is drawn. Problems with transfer in the interfaces between software were emphasized. Current research on developing a system for Product Lifecycle Management (PLM) in industrialized housebuilding indicate a path forward. A PLM system facilitates the development of digital developments such as digital twins and smart products, which possess the potentials to generate crucial feedback, which is crucial for the competitiveness and efficiency of industrialized housebuilding. Thus, for a trade with high levels of complexity, a move towards a fully functional PLM system might not only be desirable but decisive.
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