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从可靠性理论的基本观点出发，推导出了一个确定构件剩余寿命的数学表达式△ｔ＝（ｔａ－ηａｌｎＲｇｚ）１／ａ－ｔ．在此式基础之上，利用声发射技术中某些对构件疲劳损伤较为敏感的特征参数，能够比较准确地确定构件的剩余寿命
From the basic point of view of reliability theory, a mathematical expression for determining the remaining life of a component is deducted by Δt=(ta-ηalnRgz)1/a-t. On the basis of this formula, by using some feature parameters sensitive to fatigue damage of components in acoustic emission technology, the remaining life of components can be accurately determined.