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• Main Author: (NIM : 23405018); Dosen Pembimbing : Prof. Dr. Ir. Bermawi P. Iskandar, EFFRIANSYAH
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/15490
• Institution: Institut Teknologi Bandung

Customer satisfaction with a product depends on the product performance over a warranty period. Failures which accurs just after the product purchase and just after the warranty expire will lead to customer dissatisfaction. Each dissatisfied customers with the product performance over the warranty period will effect to future sale. <br /> <br /> <br /> Hence, it will cause loss of a new potential sale through the negative word of mouth, and the loss of repeat purchase because the customer switch to a competitor product. By product reliability improvement the number of failures/claims over the warranty period can be reduced and this in turn decreases the total warranty cost. <br /> <br /> <br /> In this thesis we consider the product with n components configured in series structure. The components are repairable and non-repairable. In this research, two <br /> <br /> <br /> reliability improvement models are studied with the decision variable being the optimal failure rate after reliability improvement. The Reliability improvement is <br /> <br /> <br /> developed using the failure rate allocation method based-on warranty cost fraction per components taking into account customer dissatisfaction cost. <br /> <br /> <br /> Based-on numerical examples, the optimal failure rate gives reduction on total warranty cost 32.848% and 69.039% for non-repairable model with/without constraint, 38.821% and 54.067% for repairable model with/without constraint.