金属机件腐蚀损伤日历寿命的计算模型和确定方法

CALCULATION MODEL AND DETERMINATION METHOD OF CORROSION DAMAGE CALENDAR LIFE OF METAL PARTS

给出一种计算金属机件腐蚀损伤的日历持续时间（寿命）计算模型和确定方法，它适用于飞机、汽车、轮船和其它在腐蚀环境下工作的机件日历寿命的确定。该模型和方法只要有相应腐蚀环境的Ｔ－Ｈ曲线和使用环境的温度－时间腐蚀谱，就可计算出腐蚀机件的持续腐蚀时间，即日历寿命。

A certain kind of approximate linear relationship is found between corrosive temperature (T) and corrosive time (H) for metal structure, within a certain range of temperature. It is called the T H curve in this paper, which is similar to the S N curve in the fatigue field. On the basis of T H curve, the author deduces the formula of calendar life for corrosion damage of metal under many kinds of medium surrounding.As for the form, it looks like the Miner theoretical formula in fatigue field. Using this formula, the calendar life for corrosion damage of metal can be estimated simply under varied complicated medium surrounding.