Abstract

ABSTRACTModeling the reliability of a system typically involves the piecewise combination of mathematically disparate functions covering distinct periods (e.g., decreasing, constant, and increasing time-dependent failure rates defining the traditional bathtub curve) in the life of an engineered system. This work explores the two-sided power distribution, a nonlinear extension of the triangular distribution, for describing failure time and rendering a statistically valid bathtub curve with a single probability density function. The parameters of the two-sided power distribution also provide some flexibility to describe decreasing and increasing failure rates with a single distribution that are not available with similar distributions.

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