超声疲劳研究综述

A Review of the Ultrasonic Fatigue Research

超声疲劳具有节省时间、能源和经费的优点,适用于材料的长寿命疲劳和低速率裂纹扩展研究,尤其是疲劳极限和近门槛值扩展的研究。近年来理论研究日益成熟,试验设备和技术达到高准确性和多种加载形式。超声疲劳不仅属于疲劳学和断裂力学的基础研究,而且其成果已应用于航空、航天等工业领域。

Having the advantage of saving time and energy , ultrasonic fatigue is an economic and ef -fective method. It satisfies the investigations on long fatigue life and low crack growth rate, especially that on fatigue limit and threshold regime . The improve -ments of theory and technique, mainly high accuracy and varied testing posibilities, have been obtained during the last years. Besides scientific investigations for fatigue and fracture mechanics, ultrasonic fatigue is also used for industrial applications.