Title:Reliability Modeling and Optimization Strategy for Manufacturing System Based on RQR Chain.
Authors:Yihai He, Zhenzhen He, Linbo Wang, and Changchao  Gu.
Journal : Mathematical Problems in Engineering.
Accepted date:2 Nov,2015.
Abstract:
Manufacturing system is a complex engineering system, accurate and dynamic reliability modeling for the running system is the prerequisite to implement preventive maintenance, and it is an important mathematical problem in engineering also. However, existing studies could not output the reliability value in real time because their abandonment of the quality inspection data originated in the operation process of manufacturing system. In order to solve the problem, this paper presents an approach to model the reliability of manufacturing system dynamically based on their operation data of process quality and output data of product reliability. Firstly, on the basis of importance explanation of the Quality variations in manufacturing process as the linkage for the manufacturing system Reliability and product inherent Reliability, the   chain which could represent the relationships between them is put forward, and the product qualified probability is proposed to quantify the impacts of quality variation in manufacturing process on the reliability of manufacturing system further; Secondly, the impact of qualified probability on the product inherent reliability is expounded, and the modeling approach of manufacturing system reliability based on the qualified probability is presented; Thirdly, the preventive maintenance optimization strategy for manufacturing system driven by the loss of manufacturing quality variation is proposed; Finally, the validity of the proposed approach is verified by the reliability analysis and optimization example of a engine cover manufacturing system.