摘要
对不同预腐蚀时间的裂纹萌生寿命进行统计分析，并选取了4种函数形式对（CT）数据进行拟合对比分析。结果表明，指定裂纹尺寸的裂纹萌生寿命随腐蚀时间的增加而降低，在工程常用的时间范嗣内，若假定裂纹萌生寿命服从对数正态分布，指定裂纹尺寸的对数裂纹萌生寿命标准差与预腐蚀时间基本无关，单参数指数函数形式拟合的不同裂纹尺寸的C-T曲线效果最好。
The crack initiation life of different pre-corrosion times was deduced by statistical analysis theory The data of （C-T） was fitted with four forms of function, and then the fitting results were compared and analyzed. The results showed that the crack initiation life of the designated crack size was reduced with the increase of corrosion time, and the standards variation of the logarithmic crack initiation life was handly correlated with the pre-corrosion time when assuming the crack initiation life followed the logarithmic normal distribution. The C-Tcurve of different crack sizes fitted by single parameter exponent form of function is the best.
出处
《海军航空工程学院学报》
2011年第5期567-570,共4页
Journal of Naval Aeronautical and Astronautical University
