摘要
为了寻求高温高压环境介质下的疲劳裂纹扩展的测量方法 ,本文研制了基于柔度法的疲劳裂纹扩展系统 .根据显微镜的标定结果 ,验证该计算机自动测量系统给出了可信的测量结果 .其中 ,位移由涡流位移传感器测得 ,载荷由试验机自带的标准传感器测得 .计算机实时采集并处理测试信号 ,给出裂纹扩展速率 .文中介绍了该系统的功能及应用前景 .作为应用实例 ,给出了 42CrV和IR3Mo等钢种的疲劳裂纹扩展速率及门槛值 .
A measuring system used for fatigue crack growth investigation based on compliance method is presented. The system is computerized and could give the crack growth rate of the specimen in test instantly.The system is suitable for use in the tests under high pressure and elevated temperature conditions.The structure and working principle of the system are described.An experiment for 42CrV and IR3Mo steels by using the system is reported.
出处
《实验力学》
CSCD
北大核心
2000年第1期110-114,共5页
Journal of Experimental Mechanics
基金
国家自然科学基金资助项目!(5 9375 192 )
