| Author | Pham Gia Hung |
| Call Number | AIT Thesis no. 1141 |
| Subject(s) | Assembly-line balancing
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | Assembly line balancing technique is used as a tool for improving the operations in the assembly lines. Work elements are grouped into stations with the objective of equalizing the assignment of work in such
a way that the number of stations is minimized; which, if achieved, will lead to the total manufacturing time of the product item. The time required to perform the work at a station is the sum of work element times
associated with the work elements assign to that station. The output rate is the reciprocal of the largest station time. All work elements are assigned to stations in such a way that each station can perform the work elements assigned to it in sequence without violating technological succession requirements. In this study, a number of existing methods in
assembly line balancing have been considered to obtain solutions of production line problems. Methods involved in the study are Integer-Linear
Programming, Mixed-Integer Linear Programming, One-Phase Heuristic method, Two-Phases Heuristic method. Computer programs for these methods
were written in FORTRAN IV to obtain solutions. The output efficiency attained for a specified cycle time is used as the measure of effectiveness and the computing time required to make line balancing calculations for a specified output rate is used as the measure of cost. Comparison
between linear programming approach and heuristic approach showed that
the latter appears to dominate the former in terms of both efficiency and cost. Thus, further applications of the heuristic method has been done in a number of industrial problems. Results of the study showed
that, for a small problem the work element assignments are the same for all models. However, for a larger problems there are differences among
them. In terms of effectiveness (i.e. output efficiency) the one-phase heuristic archives the better results but in terms of cost, the two-phases heuristic method requires a smaller amount of computing time. Therefore, decision-making of the manufacturers in choosing the assembly line balancing technique is dependent upon their objective whether the effectiveness or the cost is more important. |
| Year | 1975 |
| Type | Thesis |
| School | Student Research Before 1980 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Pakorn Adulbhan |
| Examination Committee(s) | Woo, Wai-Ling ;Sharif, M. N. |
| Scholarship Donor(s) | Government of the Federal Republic of Germany |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1975 |