According to the fuzzy probability theory and the reliability design principle, the method used for calculating the fuzzy reliability with fuzzy strength and constant stress was put forward.
基于模糊概率理论与可靠性设计原理，提出了一种应力为常量、强度为模糊量时的模糊可靠度计算方法。
This paper has compared the advantage and disadvantage of the constant displacement method, constant loading method and slow strain rate method on researching the stress corrosion.
比较了恒位移法、恒载荷法和慢应变速率法研究应力腐蚀时的优缺点。
The grouping test method at four constant stress levels was applied for short life span areas while the stress up and down test method were used for long life span areas.
短寿命区采用四级恒定应力水平的成组试验法，长寿命区采用应力升降试验法。
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