Proactive Remanufacturing Optimization Design Based On Time Matching

Facing with the increasingly serious resource and environmental issues, the development of remanufacturing engineering is of great application value. As the uncertainty of remanufacturing blanks, the bottleneck of traditional passive remanufacturing technology is difficult to overcome, proactive remanufacturing which can effectively reduce the uncertainties is put forward in this paper..And focus on the proactive remanufacturing design, and optimizated design based on the time matching, finally the timing of proactive remanufacturing is determined.First, the relationship between remanufacturing with service cycles is analyzed, the meaning and main features of proactive remanufacturing are explained.The proactive remanufacturing timing mechanism is put forward based on the failure rate "bathtub curve".The failure condition assessment method is studied and the advantages of proactive remanufacturing are explained with the engine crankshaft as an example.Further,the proactive remanufacturing design is discussed.Secondly, time matching analytic hierarchy process is built to study the relationship among "product-key components-characteristic structure "from the perspective of the fatigue life.Using the simulated annealing method to realize time matching of the components,and then best life match of component and service of product are determined by life match of component, structure and product step by step.And at last relationship between components with the product is studied to determine the timing of the proactive remanufacturing..The results showed that:Reactive remanufacturing timing is often at the ending of occasional failure region, the components are poor to be remanufactured.And proactive remanufacturing can pre-designed the key components of the product, even get the best match combination, combined the overall performance to determine the remanufactruing timing effectively, avoiding the impact of blanks’uncertainty on the remanufactruing. Time matching of the components can determine the best match life of key component, the life match optimize design of structure make the components match the best match life.Then the performance of the product can be known by product life match method to determine what is the best timing to do remanufacturing.