We consider a manufacturing system that uses Automated Guided Vehicles (AGVs) for material handling. Increasing the capacity of the AGVs used can lead to increased throughput and reduced inventory-holding costs. However, AGVs are typically expensive. Hence modeling the economics of buying an additional vehicle is an important problem from the standpoint of making a system lean. Optimization of ...

Cellular manufacturing systems (CMS) typically comprise a number of manufacturing cells served by a centralized material handling system. Designing such systems includes three major decisions; cell formation (CF), group layout (GL), and group scheduling (GS). Traditionally, these three decisions have been dealt with separately, which has usually lead to less than optimal system performance. In ...

A bay configuration arranged along a central spine and served by an automated monorail material handling system are common designs for the layout and material handling system in new semiconductor wafer fabrication facilities. This paper investigates the facility design problem in semiconductor fabrication facilities and proposes a procedure to determine the optimal spine layout design given a d...

1 Sunderesh S. Heragu, Decision Sciences and Engineering Systems Department, Rensselaer Polytechnic Institute, Troy, NY 12180 [email protected] 2 Robert J. Graves, Decision Sciences and Engineering Systems Department, Rensselaer Polytechnic Institute, Troy, NY 12180 [email protected] 3 Charles J. Malmborg, Decision Sciences and Engineering Systems Department, Rensselaer Polytechnic Institute, Troy, N...

The unit load storage assignment problem determines the assignment of a set of unit loads with known arrival and departure times to a set of unit storage locations in a warehouse. The material handling device(s) can carry at most one unit load at the time. In this research it is assumed that each of the storage locations can be accessed directly without load relocations or rearrangements and th...

machine-part family formation is one of major applications of group technology (gt). the machine cell formation problem in cellular manufacturing system (cms) involves the decomposition of the manufacturing system into machine cells. part families are identified such that they are fully processed within a machine cell. the problem of cell design is a very complex task with wide ranging implicat...

Background: Manual handling, lifting, or carrying of material is responsible for non-fatal injuries among employees in industries. It is the second most prevalent reported risk factor in workplaces that can lead to potential manual handling accidents and longer-term musculoskeletal disorders (MSDs). The aim of this study was the evaluation of manual material handling using the American National...

background: perioglasâ (pg) is an alloplastic material used for grafting periodontal osseous defects since 1995. in animal models, it has been proven that pg achieves histologically good repair of surgically created defects. in clinical trials, pg was effective as an adjunct to conventional surgery in the treatment of intrabony defects. because the molecular events due to pg that are able to al...