Economic design of multiattribute acceptance - sampling plans for a paper mill | |
| Author | Jutarat Thrachoo |
| Call Number | AIT Thesis no.IE-89-25 |
| Subject(s) | Paper--Sampling Acceptance sampling |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Quality inspection is an important function in the Quality Assurance program of any paper company. The usual practice is to inspect the quality at the jumbo reel, after which the jumbo reel is cut into different sizes and wound onto smaller rolls. The load which is applied on the paper at that time causes quality of paper to drop. The paper after this winding process is the final product of the mill and is delivered to the customers. Nevertheless, there is no more inspection done on the paper at this final step. Hence, there is more likelihood of a bad quality paper being shipped to a customer. To improve the quality assurance, a two stage inspection plan is suggested in this study. The first stage of inspection, done at every jumbo reel, follows the existing inspection system. The second stage of inspection is to be carried out at some small rolls by using the proposed sampling plan. A total quality cost model is developed to determine the optimum sampling plan for the second stage. This model is modified from Schmidt and Bennett' model which is presented for economic multiattribute acceptance sampling plan. Optimization of the model is achieved through the pattern search technique. A computer program is developed to find the solution. The results show that the proposed inspection system can reduce the current total quality cost besides improving the customer satisfaction. Sensitivity of the optimum plans and total expected cost to the cost coefficients is investigated. |
| Year | 1989 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Industrial Engineering (IE) |
| Chairperson(s) | Nagarur, Nagendra N.; |
| Examination Committee(s) | Tabucanon, Mario T.;Saeed, Khalid; |
| Scholarship Donor(s) | The Royal Government of Belgium; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1989 |