Balancing time and physical effort in two-sided assembly lines
In assembly line balancing problems, time is balanced among workers. This does not necessarily balance their physical effort. The effort exerted by workers varies depending on the type of the job, and the size and weight of the component. In the two-sided assembly lines, commonly used for heavy indu...
| Published in: | Ain Shams Engineering Journal |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-09-01
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| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2090447921000964 |
| _version_ | 1849323518927306752 |
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| author | Nessren Zamzam Amin K. El-Kharbotly Yomna Sadek |
| author_facet | Nessren Zamzam Amin K. El-Kharbotly Yomna Sadek |
| author_sort | Nessren Zamzam |
| collection | DOAJ |
| container_title | Ain Shams Engineering Journal |
| description | In assembly line balancing problems, time is balanced among workers. This does not necessarily balance their physical effort. The effort exerted by workers varies depending on the type of the job, and the size and weight of the component. In the two-sided assembly lines, commonly used for heavy industries, the variation in physical effort among workers is more emphasized. The unbalanced effort leads to fatigue, and may lower productivity and quality. This work aims at balancing the physical effort among workers in the two-sided assembly lines, while considering other conventional objectives. A genetic algorithm and a new decoding scheme are proposed. An effort smoothness index (ESI) is introduced to measure the variation in effort among workers. Results prove that balancing the physical effort is influential and can be achieved at no extra cost for most cases. Effort balancing is harder to achieve in difficult problems; of high order of strength. |
| format | Article |
| id | doaj-art-35ea7a7ec2df4e7b8bb454b3b2b2ccd8 |
| institution | Directory of Open Access Journals |
| issn | 2090-4479 |
| language | English |
| publishDate | 2021-09-01 |
| publisher | Elsevier |
| record_format | Article |
| spelling | doaj-art-35ea7a7ec2df4e7b8bb454b3b2b2ccd82025-09-02T06:10:32ZengElsevierAin Shams Engineering Journal2090-44792021-09-011232921293310.1016/j.asej.2021.02.009Balancing time and physical effort in two-sided assembly linesNessren Zamzam0Amin K. El-Kharbotly1Yomna Sadek2Department of Design and Production Engineering, Faculty of Engineering, Ain Shams University, 1 Elsarayat St., Abbaseya, 11517 Cairo, EgyptDepartment of Design and Production Engineering, Faculty of Engineering, Ain Shams University, 1 Elsarayat St., Abbaseya, 11517 Cairo, EgyptCorresponding author.; Department of Design and Production Engineering, Faculty of Engineering, Ain Shams University, 1 Elsarayat St., Abbaseya, 11517 Cairo, EgyptIn assembly line balancing problems, time is balanced among workers. This does not necessarily balance their physical effort. The effort exerted by workers varies depending on the type of the job, and the size and weight of the component. In the two-sided assembly lines, commonly used for heavy industries, the variation in physical effort among workers is more emphasized. The unbalanced effort leads to fatigue, and may lower productivity and quality. This work aims at balancing the physical effort among workers in the two-sided assembly lines, while considering other conventional objectives. A genetic algorithm and a new decoding scheme are proposed. An effort smoothness index (ESI) is introduced to measure the variation in effort among workers. Results prove that balancing the physical effort is influential and can be achieved at no extra cost for most cases. Effort balancing is harder to achieve in difficult problems; of high order of strength.http://www.sciencedirect.com/science/article/pii/S2090447921000964Assembly lineTwo-sidedGenetic algorithmPhysical effortSmooth workloadErgonomics |
| spellingShingle | Nessren Zamzam Amin K. El-Kharbotly Yomna Sadek Balancing time and physical effort in two-sided assembly lines Assembly line Two-sided Genetic algorithm Physical effort Smooth workload Ergonomics |
| title | Balancing time and physical effort in two-sided assembly lines |
| title_full | Balancing time and physical effort in two-sided assembly lines |
| title_fullStr | Balancing time and physical effort in two-sided assembly lines |
| title_full_unstemmed | Balancing time and physical effort in two-sided assembly lines |
| title_short | Balancing time and physical effort in two-sided assembly lines |
| title_sort | balancing time and physical effort in two sided assembly lines |
| topic | Assembly line Two-sided Genetic algorithm Physical effort Smooth workload Ergonomics |
| url | http://www.sciencedirect.com/science/article/pii/S2090447921000964 |
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