Abstract
For series, parallel, and k-out-of-n voting system reliability calculation methods, the six σ principles have been proposed in this study to derive the interchange relationship between interval parameters and random parameters. The interval reliability index can be expressed in the function of the random reliability index. The interval reliability index can then be transformed into a random reliability index. The computational method of the reliability for series, parallel, and k-out-of-n voting systems with interval parameters is established. Finally, it has been shown that the proposed method is rational, practical, and applicable with two engineering practical simulations.
Highlights
In real-world engineering practice, it is very difficult to collect enough and accurate whole service life data for engineering structures, machinery and systems, etc., and the random reliability methods often fail to meet the actual needs. e literature [1,2,3] points out that the random reliability methods are often used in reliability assessment, but in practice, there should be other more effective approaches to supplement the deficiencies of random reliability methods
Structural nonprobabilistic reliability models based on the interval theory have been proposed, and the structural nonprobabilistic reliability indices have been analyzed under interval loads [8]
It is believed that the two reliability methods have their advantages and can complement each other in reliability calculation. e conversion of interval and random reliability methods has been studied [11, 12]
Summary
In real-world engineering practice, it is very difficult to collect enough and accurate whole service life data for engineering structures, machinery and systems, etc., and the random reliability methods often fail to meet the actual needs. e literature [1,2,3] points out that the random reliability methods are often used in reliability assessment, but in practice, there should be other more effective approaches to supplement the deficiencies of random reliability methods. E random reliability calculation method has not been applied to SPKS reasonably. Based on the above literature review, the computational method for interval reliability of SPKS will be studied in this paper.
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