Lot streaming in multi stage shops
Author
Şen, Alper
Advisor
Benli, S. Ömer
Date
1994Publisher
Bilkent University
Language
English
Type
ThesisItem Usage Stats
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Abstract
In this thesis, a number of lot streaming problems in flow, open and job
shops are investigated. Lot streaming is the process of splitting a job to allow
for overlapping of its operations on various machines resulting in shorter
completion times. When there is a single job, the problem is to find the size
of the transfer batches (“sublots”) which minimizes a given performance measure
(e.g., makespan, mean flow time). Multi-job problems are harder, since
sequencing and sizing decisions must be made simultaneously. Most of the current
research in lot streaming is concerned with minimum makespan problems
in flow shops. In this study, other performance measures and shop structures
are also analyzed. Optimal sublot sizes are derived for the single job two machine
flow shop mean flow time problem. Solution methods are proposed for
the minimum makespan problem in open shops both for multiple job and single
job cases.