The theory of constraints in manufacturing

Qassim, Raad Yahya

doi:10.1590/s0100-73862000000400001

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…The bottleneck is also seen as the work station with the lowest production capacity. This type of place limits the flow of goods and materials, while creating performance limits for the entire production system (Qassim, 2000). The bottleneck can be short-term, temporary -it can be a qualified employee on vacation or long-term, permanent -it can significantly slow down or even stop all production -e.g.…”

Section: Introductionmentioning

confidence: 99%

Elimination of constraints in the production process of power equipment components and the analysis of the resulting benefits

Knop

2019

Production Engineering Archives

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The article presents the results regarding the elimination of constraints in the production process of a power equipment subassembly, a boiler chamber, together with an analysis of the benefits resulting from this, both financial and non-financial. The significance of bottlenecks in the production process, ways of its identification and limitations - in general - are presented. The article is a case-study of an attempt to eliminate the bottleneck in the production process of the boiler chamber, which turned out to be the process of drilling and marking-off, and work stations representing these processes. In order to eliminate the limitation, it was decided to replace the existing tracing and drilling work with a numerically controlled device - a boring machine moved from the liquidated department.. As a result, labor-intensive, manual chambers marking-off and the process of drilling holes with a smaller diameter drill have been eliminated. A number of benefits has been demonstrated resulting from the elimination of the bottleneck in the process, first of all, it was possible to reduce the duration of the marking-off and drilling operations and reduce the costs of the boiler chamber production process.

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Section: Introductionmentioning

confidence: 99%

Elimination of constraints in the production process of power equipment components and the analysis of the resulting benefits

Knop

2019

Production Engineering Archives

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“…In the manufacturing industry, the production scheduling is a resource allocation problem in which the various resources are assigned reasonably and orderly to different tasks in the workshop according to needs, such that the operation system can achieve the optimal state at completion and the best production efficiency with the minimal cost [1,2]. In the production system, the production efficiency and product quality directly hinge on the maximum output of the production line and the scheduling of the production process [3,4].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Multivariate Scheduling Optimization for Open Production Line Based on Improved Genetic Algorithm

Li¹,

Gui²,

Xiao³

2018

Int. j. simul. model.

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This paper attempts to overcome the defects of bottleneck recognition and scheduling optimization in open production line. For this purpose, the author analysed the impact mechanism of external disturbances and system configuration changes on the production line, and put forward a multibottleneck identification model for production line through computer simulation. Then, the proposed model was applied to optimize the scheduling of open production line. Specifically, the bottlenecks of production line were identified based on hierarchical clustering and multi-attribute decision-making, aiming to overcome the small candidate set and low accuracy of traditional bottleneck identification algorithms. The measured results show that the proposed algorithm has clear primary and secondary logics; the number of main bottleneck clusters decreased with the increase in the order; the number of machines in the main bottleneck cluster changed nonlinearly. The traditional genetic algorithm (GA) was improved in three aspects: the local optimum trap was avoided by enhancing population diversity; the iteration speed was accelerated with the introduction of adaptive crossover operator and genetic operator; without sacrificing the computing speed, the convergence quality was guaranteed through the addition of multivariate competition algorithm. The research findings provide new insights into the efficient operation of production line.

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“…The results showed that Enhanced TOC is better than existing TOC in respect of controlling the project length practically [12]. R. Y. Qassim applied the Operation Research technique of Mathematical Programming to identify the potential of TOC for Automated Manufacturing environment in order to maximize and improve the system performance [13].…”

Section: Introductionmentioning

confidence: 99%

Applying Theory of Constraint Philosophy for Lead Time Reduction

Vartak¹

2018

IJRASET

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The theory of constraints in manufacturing

Cited by 6 publications

References 7 publications

Elimination of constraints in the production process of power equipment components and the analysis of the resulting benefits

Elimination of constraints in the production process of power equipment components and the analysis of the resulting benefits

Simulation of Multivariate Scheduling Optimization for Open Production Line Based on Improved Genetic Algorithm

Applying Theory of Constraint Philosophy for Lead Time Reduction

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