Balancing and Sequencing of Assembly Lines

Schöll, Armin

doi:10.1007/978-3-662-00861-4

Cited by 173 publications

(175 citation statements)

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“…Literatürde MALBP çeşitli tiplerde görülebilir [47] Tek-modelli montaj hattında sadece öncelik ilişkileri diyagramına göre hat dengelemesi yapılırken, karışık-modelli montaj hattında her modele ait öncelik ilişkileri diyagramı dikkate alınarak dengeleme yapılmalıdır. Karışık-modelli montaj hatlarında bir modelden diğerine sadece işlemlerin öncelik ilişkileri değil, işlemlerin süreleri de değişebilmekte ve sonuç olarak her modelin farklı iş yükü olabilmektedir.…”

Section: Problem)unclassified

Yasak Arama Algori̇tmasina Dayali Pürüzsüzleşti̇rme Yaklaşimi İçeren Karişik-Modelli̇ Montaj Hatti Dengeleme

Yağmahan¹,

Emel²

2015

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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ÖZETKarışık-modelli montaj hatları, çeşitli modellerde talep edilen ürünlerin daha ucuz olacak şekilde montajı için kullanılır. Bu tür hatlar tasarlandığında, montaj hattının zaman, yer, konum vb. kısıtlar altında daha verimli ve düzenli bir şekilde çalışabilmesi için, istasyonlardaki işlemlerin dengelenmesi gerekir. Bu makalede, karışık-modelli montaj hattı dengeleme problemi için belli bir çevrim süresine karşılık istasyon sayısının minimizasyonunu amaçlayan bir sezgisel algoritma geliştirilmiştir. Ayrıca önerilen bir yasak arama algoritmasına dayalı pürüzsüzleştirme yaklaşımı ile istasyonlarda modellere ait ortak işlemlerdeki süre farklılıklarından kaynaklanan dengesizlikler giderilmeye çalışılmıştır.Anahtar Kelimeler: Karışık-model, montaj hattı dengeleme, yasak arama, pürüzsüzleştirme MIXED-MODEL ASSEMBLY LINE BALANCING WITH SMOOTHING APPROACH BASED ON TABU SEARCH ALGORITHM ABSTRACTMixed-model assembly lines are needed for the assembly of products with a variety of models at comparatively lower costs. The design of such lines requires the work to be done at stations well balanced, satisfying the constraints such as time, space and location for optimal productivity and efficiency. This paper presents a heuristic algorithm for the mixed-model assembly line balancing problem to minimize the number of stations for a given cycle time. The proposed algorithm further reduces time discrepancies among stations due to differences in times for common operations of different models by using a smoothing approach which is based on the tabu search algorithm.

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Section: Problem)unclassified

Yasak Arama Algori̇tmasina Dayali Pürüzsüzleşti̇rme Yaklaşimi İçeren Karişik-Modelli̇ Montaj Hatti Dengeleme

Yağmahan¹,

Emel²

2015

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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“…An assignable portion of the total work load is named as a task (Scholl 1999). The operating time of one task is considered as task time.…”

Section: Assembly Line Design Problemmentioning

confidence: 99%

Design of assembly lines with the concurrent consideration of productivity and upper extremity musculoskeletal disorders using linear models

Cochran

et al. 2012

Computers & Industrial Engineering

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The productivity of assembly lines is considerably affected by the health condition of assembly workers, and work-related musculoskeletal disorders (WMSDs) are common occupational diseases among assembly workers due to repetitive motions or heavy working loads. The conventional approaches to decreasing WMSD risks in the assembly lines include slowing the work-pace or applying job rotations. These adjustments usually focus on individual assembly workers at the station level but not the work allocation among the workers at the whole assembly line level, and thus may decrease the line productivity. To avoid these negative effects, some research started considering ergonomic characteristics at the line level, such as balancing ergonomic burdens by proper work assignment among workers. These previous studies incorporated physical grip demands or processing time overload into non-linear assembly line design problems, and used heuristic solution methods. This paper presents a methodology that explicitly integrates ergonomic measures for upper extremities into linear assembly line design problems. As the ergonomic measures, this research considers a guideline of Threshold Limit Value (TLV) from American Conference of Industrial Hygienists. Linear models are developed to link work-worker assignment to the measures of hand activity and hand-arm vibration. As productivity measures, conventional assembly line design criteria are considered, such as cycle time and the number of workers. These linear models allow ergonomic and productivity measures to be integrated as a mixed-integer programming model for assembly line design. In addition, these linearization methods can be generalized in order to incorporate ergonomic measures in tabulated forms into assembly line design problems.The analysis of the result shows the new model can effectively control the exposure levels in the upper extremity by proper work assignment compared to the conventional approaches, and does not decrease production rates considerably. This research also shows the potential to reduce the need of numerous task adjustments after assembly line design in traditional trial-and-error based assembly task adjustment. ACKNOWLEDGEMENTS

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“…One of the best procedures designed for the SALBP or GALBP can be used to balance each line according to its specific characteristics (most of these procedures are referenced by Scholl and.…”

Section: Conclusion and Further Researchmentioning

confidence: 99%

“…Previous versions can be complemented by considering the secondary objective of smoothing the workstation times (Rachamadugu and Talbot, 1991;Merengo et al, 1999;Pastor and Corominas, 2000). Further details on the SALBP can be found in the surveys contained in the literature (Buxey et al, 1973;Baybars, 1986;Shtub and Dar-El, 1989;Ghosh and Gagnon, 1989;Erel and Sarin, 1998;Scholl, 1999;Rekiek et al, 2002;Scholl and Becker, 2006). However, the SALBP is often a simplification that bears little resemblance to a real-life situation.…”

Section: Introductionmentioning

confidence: 99%

A survey of the literature on the multiple or parallel assembly line balancing problem

Lusa

2008

EJIE

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Balancing and Sequencing of Assembly Lines

Cited by 173 publications

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Yasak Arama Algori̇tmasina Dayali Pürüzsüzleşti̇rme Yaklaşimi İçeren Karişik-Modelli̇ Montaj Hatti Dengeleme

Yasak Arama Algori̇tmasina Dayali Pürüzsüzleşti̇rme Yaklaşimi İçeren Karişik-Modelli̇ Montaj Hatti Dengeleme

Design of assembly lines with the concurrent consideration of productivity and upper extremity musculoskeletal disorders using linear models

A survey of the literature on the multiple or parallel assembly line balancing problem

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