Small Sample Test and Assessment Method for Dz4 Alloy Materials and Curves
Based on the heteroscedastic regression analysis theory, a small sample test method for S-N and P-S-N curves is established, which can obtain S-N and P-S-N curves of metal materials by scattered test. AH the test data of aS-N curve in different stress levels can be analyzed as an integration, so its information quantity is much bigger than traditional group test method. To the group test data, the presented method precision is also higher than the group test method. Therefore, by the presented method, P-S-N curves can be obtained without complementary test through treating the existed test data of S - N curves. Monte Carlo simulations and engineering applications show that comparing with traditional method in the same precision upwards of 60 ％ specimens can be saved by this method.
Small sample test integral estimate stress fatigue stress-life curve life estimation
XIAOBING MA TINGTING WANG
School of Reliability and Systems Engineering, Beihang University, Beijing, 100191, P.R. China
国际会议
北京
英文
115-120
2011-06-20（万方平台首次上网日期，不代表论文的发表时间）