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- Haralanova, Valentina, et al.
(författare)
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Challenges in Training on Engineering Graphics - Experiences from Two European Universities
- 2018
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Ingår i: EDULEARN18. - : The International Academy of Technology, Education and Development. - 9788409027095 ; , s. 7502-7512
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Konferensbidrag (refereegranskat)abstract
- In the presented publication the authors reflect on their long-term teaching experiences in the field of Applied geometry and Engineering graphics accumulated at two European universities - Ruse University, Bulgaria and Linnaeus University, Sweden. The main problems and challenges in the training of students of the engineering specialties of the two universities in disciplines related to descriptive geometry, technical drawing, engineering graphics and 2D and 3D CAD, are related to an establishment of practical skills for execution of different types of drawings, to the building up a spatial vision for faster and more efficient reading and implementing of drawings and an accumulation of sufficient knowledge and information on the current standards in the field of engineering graphics and technical documentation. Graphics and visualization are a preferred form of communication in engineering practices and engineering education. Various methods of descriptive geometry and computer graphics are applied in order to achieve an effective visualization. By using technical standards for defining the practical usage of symbols, graphical elements and units of measurement, a visual language is created that assists and ensures a transmission of unambiguous, clear and understandable information. The publication presents a review of approaches and training methods applied at both universities over the past 10 years, and a comparison of the results achieved. Finally, conclusions are drawn, how having in consideration others and their own experiences and taking into account some recent trends in the work of designers, developers and technologists, the students' learning outcomes of in their preparation for future engineers could be improved.
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| 2. |
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| 3. |
- Haralanova, Valentina, et al.
(författare)
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Development of an automated system for assembling cold pressed segments : industrial application of a degree project
- 2015
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Ingår i: Proceedings of Trc-IFToMM Symposium on Theory of Machines and Mechanisms. - : Turkish Machine Theory Association. - 9786058422001 ; , s. 356-362
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Konferensbidrag (refereegranskat)abstract
- In this paper a successful final project work, done at Linnaeus University (LNU), is presented as a result of cooperation between the company and the students group, which will find its industrial application in making the production process of the company more efficient. In the presented paper the emphasis is on the process followed during the design project and on the continuous and fruitful cooperation between the company providing the project, the student´s design team and the University itself.
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| 4. |
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| 5. |
- Haralanova, Valentina, et al.
(författare)
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Failures in gearboxes due to material problems
- 2016
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Ingår i: Materials, Methods & Technologies. - 1314-7269. ; 10, s. 112-136
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Tidskriftsartikel (refereegranskat)abstract
- Mechanical failures in general can appear because of weak design, wrong handling, and problems during the manufacturing process, material problems etc. This paper is dealing with failures in lifting machinery gearboxes which appear because of material stresses and tribological problems. The study conducted is based on theoretical analysis and analysis of inspection results for failures that have appeared in cranes and other lifting machinery in southern part of Sweden. Investigation shows that besides the surface damages like abrasive and adhesive failures also cracks in the material in different parts appear. Since these types of gearboxes are made in short series, gearbox housings and sometimes also gears are made of welded steel. Hence welding process makes the weld joints brittle; cracks do start and developed until the part fails. Another problem that happens due to welding is wrapping which leads to changes in the geometrical tolerances and that does affect the parallelism of the shafts and the functionality of the gearbox.
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| 6. |
- Haralanova, Valentina, et al.
(författare)
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Re-designing of a product development course for mechanical engineering students by shifting responsibilities to them
- 2017
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Ingår i: INTED2017. - : IATED-INT ASSOC TECHNOLOGY EDUCATION & DEVELOPMENT. - 9788461784912 ; , s. 5991-5999
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Konferensbidrag (refereegranskat)abstract
- Market needs and customer expectations on new products grow continuously, which increases the requirements on the product engineers and designers. Respectively, is becomes real challenge to educate engineering students theoretically by studding contemporary methods and techniques in design and practically mastering skills in multi-disciplinary product development process. The presented paper is meant to introduce an experiment in teaching Product development course for Mechanical engineering students at Linnaeus University (LNU). After teaching the course in several years we experience that, teaching creativity, critical thinking and decision making by presenting different tools and techniques, could be hard to make it inspiring enough for the students. During the fall semester of 2014 a decision was taken to re-design the course by shifting some of the activities and responsibilities from the teacher to the students. They were involved in delivering and clarifying the theory by summarizing the lectures. Students have an active role in working on industrial projects and presenting the results achieved. The individual apprizing based on the group members contribution was also a students' responsibility. There were benefits but also some problems which will be discussed in this paper. The conclusion made after this experiment reflected in the course planning for the next years.
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| 7. |
- Khoshaba, Samir, et al.
(författare)
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Teaching design of mechanical transmissions in an international classroom - experiences and reflections
- 2017
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Ingår i: INTED2017. - : IATED-INT ASSOC TECHNOLOGY EDUCATION & DEVELOPMENT. - 9788461784912 ; , s. 6007-6016
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Konferensbidrag (refereegranskat)abstract
- The topic of mechanical transmission design is one of the fundamental parts in the subject of machine design, and it is taught almost in all the mechanical engineering programs around the world. The fundamentals are the same but the teaching methods, literature and the instruction language are different from country to country, and from university to university. Although the bachelor program in mechanical engineering at Linnaeus University (LNU), Sweden is taught in Swedish, there are some courses given in English language both for the program-and international students. The international students are usually exchange-or free movers staying at LNU for one semester or for a whole academic year. The English courses are usually in the final year of the program, which means almost all international students have different background, skills and knowledge. The mix of program students and students from different countries in an international classroom is an excellent opportunity to gain international experiences but it is also a real challenge both for teachers and student groups. This paper is presenting many years experiences and result from teaching machine transmission design though project based learning for classes mixed of program-and international students at Linnaeus University in Sweden.
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