材料工程Issue(8)：77-83,7.DOI:10.11868/j.issn.1001-4381.2015.08.013
基于统计分析的等离子喷涂层接触疲劳寿命和失效模式
Contact Fatigue Life and Failure M ode of Plasma Sprayed Coating Based on Statistical Analysis
摘要
Abstract
The rolling contact fatigue(RCF) life and failure modes of coatings ,prepared by plasma sprayed Ni‐based alloy ,were investigated under different stress levels ,and were analyzed and dis‐cussed by statistical analysis methods (including variance analysis ,regression analysis and discrimina‐tion analysis) with R‐3 1.1. software as a platform .The results show that the RCF life of the coatings exhibits normal distribution form .In addition ,the mean and variance of the coatings’ life decreases as the contact stress increases ,and the distribution of the fatigue life becomes more concentrated .Fur‐thermore ,variance analysis indicates that the contact stress has a significant influence on the RCF life of the coatings .And the mean life of the coatings is linear associated with the contact stress .The dis‐crimination criterion for the failure modes of the coatings is also established .The failure modes of the coatings can be predicted if the contact stress and the fatigue life are designated .And the prediction accuracy of the failure mode is above 65% .Furthermore ,the contribution proportion of the fatigue life for the failure mode is obviously higher than that of the contact stress ,thus the fatigue life is the main factor determining the failure mode of the coating .关键词
接触疲劳/失效模式/方差分析/回归分析/判别分析Key words
contact fatigue/failure mode/variance analysis/regression analysis/discrimination analysis分类
矿业与冶金引用本文复制引用
张志强,李国禄,王海斗..基于统计分析的等离子喷涂层接触疲劳寿命和失效模式[J].材料工程,2015,(8):77-83,7.基金项目
国家自然科学基金资助项目（51275151）；国家杰出青年科学基金资助项目（51125023）；国家973计划资助项目 （）
