Measuring and testing techniques of fatigue crack growth threshold - 文章详情页

作者：

Liu, Q. (Liu, Q..) | Zhang, Z. (Zhang, Z..) | Zou, H. (Zou, H..) | Li, X. (Li, X..)

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Scopus PKU CSCD

摘要：

In　view　of　insufficiency　in　crack　growth　threshold　measurement　technology,　the　survey-point　displacement　of　specimen　and　test-load　are　collected　through　digital　measurement　technology,　and　the　crack　size　is　calculated　through　the　compliance　method,　the　cycle　index　is　recorded　according　to　the　wave　crest　of　survey-point　displacement.　Besides,　the　integrated　objective　of　test　control,　data　collection,　monitoring　and　processing　are　implemented　by　the　multi-thread　software.　The　results　of　the　fatigue　crack　growth　thresholds　of　steel　40CrNiMo,　which　are　obtained　from　group　test　method　under　different　load-ratio,　prove　the　reliability　and　feasibility　of　measuring　and　testing　techniques.　©　2017,　Editorial　Department　of　Journal　of　Beijing　Jiaotong　University.　All　right　reserved.

关键词：

Compliance method; Crack testing technology; Fatigue crack growth threshold; Stress intensity factor

作者机构：

[ 1 ] [Liu, Q.]92117 Troops, Beijing, 100072, China
[ 2 ] [Zhang, Z.]Standards & Metrology Research Institute, China Academy of Railway Sciences, Beijing, 100081, China
[ 3 ] [Zou, H.]School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing, 100044, China
[ 4 ] [Li, X.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, 100022, China

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