Dynamics of Two- and Three-Worker “Bucket Brigade” Production Lines

Bartholdi, John J.; Bunimovich, Leonid; Eisenstein, Donald D.

doi:10.1287/opre.47.3.488

Cited by 84 publications

(62 citation statements)

References 4 publications

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“…Therefore, we propose two new worker's behavior rules in this paper. For these rules, performance measures are better than that of derived by previous papers [2][3][4][5]. Worker's behavior changes in the over-lapping zone as follows.…”

Section: New Worker's Behavior Rulementioning

confidence: 89%

“…This rule is that when worker / takes over an item to worker /+1, worker / walks back to worker /-I, and takes over an item from worker /-I if worker / is in the upstream from Ao.ln applying this rule, advantage is that not only time for completing an item is smaller than that of the previous researches [2][3][4][5] but also the maximum production rate maintains the same as previous researches by processing at the same time in the over-lapping zone.…”

Section: Rule 1 (Zone Rule: Zr)mentioning

confidence: 99%

“…In applying this rule, advantage is that not only it is easy to balance by separating the working area since there is a fewer worker in one line but also time for completing an item is smaller than that of the previous researches [2][3][4][5].…”

Section: Rule 2 (Fixed Rule: Fr)mentioning

confidence: 99%

“…In previous researches [2][3][4][5], only production rate is considered as performance measure. However, in this paper, flow time should be considered since an item consists of multiple parts, and thus an item can be made earlier than integrated line.…”

Section: Comparison and Analysismentioning

confidence: 99%

“…For solving this problem, "Self-Balancing Production Line" was introduced. The utilization of the mentioned method is reported in at least two commercial environments: apparel manufacturing and distribution warehousing [2]. In this type of production line, each worker is assigned to work dynamically, and when the last worker completes an item, he/she walks back and takes over the next item from his/her predecessor.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Integrated Approach for Self-Balancing Production Line with Multiple Parts

Hirotani

Morikawa

Takahashi

Advances in Production Management Systems

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In a "Self-Balancing Production Line", each worker is assigned work dynamically, thus they can keep the balanced production under satisfying the specific conditions. For structure of line, in-tree assembly network line has been analyzed in previous paper. In that paper, line are virtually integrated to one and slowest to fastest sequence can be balanced under the integrated line. However, if an item consists of multiple parts and parallel work is possible, a new approach is applicable under the condition, and perfonnance measure increase comparing to integrated line. In this paper, new integrated approach for both previous self-balancing line and buffer is proposed, and we compare the line that had been proposed in the previous paper.

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Section: New Worker's Behavior Rulementioning

confidence: 89%

Section: Rule 1 (Zone Rule: Zr)mentioning

confidence: 99%

Section: Rule 2 (Fixed Rule: Fr)mentioning

confidence: 99%

Section: Comparison and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Integrated Approach for Self-Balancing Production Line with Multiple Parts

Hirotani

Morikawa

Takahashi

Advances in Production Management Systems

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Magnetic Bucket Brigade Transport Networks for Cell Transport

Block

Klingbeil

Sajjad

et al. 2023

Adv Materials Technologies

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Controlled transport of biological cells in biomedical applications such as sorting, cell sequencing, and assembly of multicellular structures is a technological challenge. Research areas such as drug delivery or tissue engineering can benefit from precise cell location resulting in faster response rates or more complex tissue structures. Using computational methods, different soft magnetic elements with curved edges are designed to form a transport network, enabling transport and all functionalities for the manipulation of microbeads and cells on surfaces by rotational magnetic fields. Building blocks with bimodal functionalities due to segments of differently curved edges permit breakpoints as well as switchable transport via splitting and combining elements. Connecting the elements, networked paths are realized which allow variable movement patterns of magnetic carriers and cells. The direction of magnetic field rotation is altered to direct the beads and cells into different transport lines, and the exact timing is not critical. The networks are used to achieve deterministic movement of microbeads and cells with minimal intervention. Programmed transport over one millimeter with cell transport velocities of several micrometers per s is demonstrated. Based on scalable microchip technology, the networks can be integrated with CMOS‐compatible materials and straightforwardly combined with sensing and diagnostic structures.

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Increasing short‐term output in assembly work

Looze

Bösch

Rhijn

2010

Hum Ftrs & Erg Mfg Svc

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Maximization of flexibility is one of the major challenges in assembly line design. This article addresses the question of how to temporarily (in times of peak demand) increase the output of a line, which is already optimized to attain the "normal" output rate. Instead of a costly reconfiguration of the line creating extra workstations for more operators, we applied an approach of keeping the line intact, adding two extra operators, and applying a scheme wherein the operators took their breaks alternately. For two different alternating break schemes, we compared the productivity rates, the physical load on operators, and the operators' experiences to those of the traditional situation. The new approach resulted in an increase in line output of 12-16%, depending on which alternating break scheme was applied. On the operator level, we observed no differences in productivity among conditions, despite the differences in total pause time per operator. Simultaneously, physical loads on the neck and shoulders, expressed by level of discomfort, were found to be significantly lower in one of the new alternating break schemes. A majority of the operators rated this alternating break scheme as "pleasant" (90%), but wanted the scheme to be applied only during the periods of peak demand because of social aspects (80%). In conclusion, an increase in volume flexibility can be achieved by adding two extra workers and applying an alternating work/rest scheme without a costly reconfiguration of the line. C 2010 Wiley Periodicals, Inc.

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Dynamics of Two- and Three-Worker “Bucket Brigade” Production Lines

Cited by 84 publications

References 4 publications

Integrated Approach for Self-Balancing Production Line with Multiple Parts

Integrated Approach for Self-Balancing Production Line with Multiple Parts

Magnetic Bucket Brigade Transport Networks for Cell Transport

Increasing short‐term output in assembly work

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