摘要
基于中值S-N曲线的三参数幂函数式,根据极大似然原理,分别给出了测定P-S-N曲线的单点试验、成组试验和单点-成组试验结果的P-S-N曲线公式。并进行了对比试验,使用文中方法统计分析试验数据,发现单点法、单点-成组法及成组法测定出的P-S-N曲线较接近。由于单点法能够大量节省试样,且能保证一定的精度;
On the basis of N(S-S 0) m=C , according to the maximum likelihood principle, the formulas of P S N curves are presented which were determined by the single spot method, the single spot group method and the group method.The comparative test was made, and the test data are analyzed and treated. It was found that the P S N curves determined by these three methods were approximate.By means of the single spot method,many specimens may be saved, so the single spot method may be used to determine the P S N curves of the structure components.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1996年第5期539-542,共4页
Acta Aeronautica et Astronautica Sinica
关键词
P-S-N曲线
极大似然法
数据处理
single spot method single spot group method group method P S N curve the maximum likelihood principle