Abstract
The reliability allocation of machine tools which is a multi-attribute decision-making problem has great significance in designment of machine tools. This paper integrates the intuitionistic trapezoidal fuzzy numbers and performance sorting technique based on similar ideal solutions to achieve the flexible allocation of machine tools reliability. Firstly, intuitionistic trapezoidal fuzzy numbers are employed to integrate decisions made by multiple decision-makers and fuzzy information of their preferences. Then, intuitionistic trapezoid fuzzy numbers’ expectations are treated as the weights of criteria. Finally, performance sorting technique based on similar ideal solutions is used to obtain the reliability allocation weight of every subsystem. To investigate the efficacy and simplicity of the provided approach, reliability distribution in a CNC machine tool is introduced as an example to explain its specific contents. It can be concluded that the provided method is more precise and convenient by comparing the results of this approach with those obtained by analytic hierarchy process method.
Highlights
As a crucial facility of other industrial components, machine tools play an important role in manufacturing industry[1]
We have developed simple and precise formulas to achieve reliability allocation of machine tools
Preliminaries reliability allocation of machine tools[12] is reviewed and some definitions and basic concepts related to analytic hierarchy process (AHP) method[30], intuitionistic trapezoidal fuzzy numbers (ITrFNs)[29,31,32] and TOPSIS method[26] is introduced. 2.1 Reliability allocation of machine tools
Summary
As a crucial facility of other industrial components, machine tools play an important role in manufacturing industry[1]. The intuitionistic trapezoidal fuzzy numbers (ITrFNs) and the TOPSIS method[29] is applied to deal with the machine tools’ problems of reliability allocation. By using this method, we have developed simple and precise formulas to achieve reliability allocation of machine tools. 2. Preliminaries reliability allocation of machine tools[12] is reviewed and some definitions and basic concepts related to analytic hierarchy process (AHP) method[30], intuitionistic trapezoidal fuzzy numbers (ITrFNs)[29,31,32] and TOPSIS method[26] is introduced. Conventional reliability allocation methods of machine tools are complicated, so this paper presents an easy calculation method of reliability allocation
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