Journal of the Korean Operations Research and Management Science Society (한국경영과학회지)
- Volume 19 Issue 1
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- Pages.145-152
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- 1994
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- 1225-1119(pISSN)
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- 2733-4759(eISSN)
An Economic Design of Constant Stress Accelerated Life Tests
일정스트레스 가속수명시험의 경제적 설계
Abstract
This paper deals with an economic design of acelerated life test under constant stresses where failure times are exponentially distributed. In this case the optimization criterion is the information amount per unit cost. Fisher's information matrix of exponential distribution's parameters and expected cost considering fixed and variable costs are obtained. The decision variable is the censoring time in the model. In the 2-level constant stress case, it is proved that the optimal solution exists and is unique under some condition. Numerical examples are also included.
Keywords