共振频率与裂纹长度的关系研究  

Relation of Resonant Frequency and Crack Length

作　　者：徐世平[1] 王红缨[1] 王建国[1] 唐俊武[1] 

机构地区：[1]北京科技大学新金属材料国家重点实验室,北京100083

出　　处：《物理测试》1995年第4期1-3,共3页Physics Examination and Testing

摘　　要：本文研究用频率法测量裂纹长度。与其它测量方法比较,此法简便易行,不受环境、温度及介质的影响,且频率可直接由试验机给出,因而由设备引起的误差要小得多。In this paper the method of resonant frequency is used to measure the length of crack propagation. Comparing with the other methods, this method is convenient and easy to be applied. And it will not be influenced by the environmental conditions, the temperature and tha medium of the tests,etc. Also ,since the frequency can be determined by the machine itself, the error caused by the equipments will be much smaller.

关 键 词：共振频率 裂纹扩展 断裂韧性 工程材料 

分 类 号：TB302.3[一般工业技术—材料科学与工程]