一种基于MATLAB的钢材裂纹扩展速率试验数据处理方法

A MATLAB-based method for processing test data of steel crack propagation rate

提出一种基于MATLAB软件设计的钢材裂纹扩展速率试验数据处理程序,并利用该程序对18MnMoNb钢和16MnR钢裂纹扩展速率试验数据进行处理。在分析程序运行结果的基础上,评价七点递增法、五点递增法、三点递增法针对不同试验数据处理精度的优劣性,并分析Paris公式中常数C、m的相关性,得出了C、m的相关性经验公式。

The paper introduces a MATLAB-based program designed to process the test data of steel crack propagation rate.The proposed program was used to handle the test data of the crack propagation rate of 18MnMoNb steel and 16MnR steel,and the result was analyzed.On this basis,the precision of seven-point,five-point and three-point incremental methods in processing different types of test data was evaluated.The pertinency of constants C and m in Paris formula was analyzed,and the empirical formula about C and m was given.