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International Society of Science and Applied Technologies |
| Post-Warranty Block Replacement Policy with Minimal Repair for Continuously Monitored Products Within a Warranty Period | ||||
| Author | Nobuyuki Tamura
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| Abstract | We consider a product whose degradation follows an Inverse Gaussian process and which is continuously monitored over a warranty period. If the deterioration level of the product reaches a threshold given in advance, then it is repaired without any cost to the customer. When the warranty contract is expired, it is not renewed. Instead, the customer maintains the product under a block replacement policy with minimal repair after a hybrid preventive maintenance (PM). Through the hybrid PM, the degradation level and the age of the product are reduced. For this model, firstly, we find an optimal threshold where the product is repaired by minimizing the expected repair cost for the manufacturer within the warranty period. Secondly, we find an optimal degradation level and age for the hybrid PM and an optimal time for the block replacement by minimizing the expected loss for the customer. We investigate some properties of the model through numerical analysis and provide some perspectives and indications on the optimal decisions.
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| Keywords | post-warranty, block replacement, minimal repair, hybrid preventive maintenance, IG process | |||
| Article #: RQD2024-78 | ||||
Proceedings of 29th ISSAT International Conference on Reliability & Quality in Design |