• 论文 •

一种新的微机辅助疲劳裂纹扩展综合测试系统

1. 1. 北京航空航天大学 材料科学与工程系;
2. 中国石油天然气总公司管材研究所
• 出版日期:2000-02-29 发布日期:2010-09-27

Set of New Microcomputer Aided System for Comprehensively Measuring FCG

LIU Yan-li1, ZHONG Qun-peng1, LU Min-xu2

1. 1. Beijing University of Aeronautics and Astronautics,Dept. of Materials Science and Engineering;
2. Tubular Goods Research Center of CNPC
• Online:2000-02-29 Published:2010-09-27

Abstract: A set of new computer aided system(CAS)programmed by C+ + and developed on X86 series microcomputer for comprehensively measuring crack growth rate is briefly introduced and some part of algorithms for data process and the selection technique of load-variation are given.The CAS mentioned above can be applied to tests with different range of load ΔP and range of stress intensity factor ΔK such as constant ΔP method,constant ΔK method as well as decreasing ΔK and increasing ΔK method.Compared with other systems,the new systems can increase the measurement accuracy,shorten testing time and obtain more information. It has been successfully used in measuring corrosion fatigue crack growth rate,which shows that the system is effective in measurement and reliable in function.