金属疲劳试验用于测定金属材料的许用疲劳应力,绘制材料的疲劳曲线,进而在交变应力下测定金属材料的疲劳极限.疲劳研究的试验方法有很多,该文根据有关国家标准和现有文献资料对一些常用疲劳试验方法进行了综述,包括单点疲劳试验法、升降法疲劳试验、高频振动疲劳试验法、超声波法疲劳试验、红外热像技术疲劳试验方法,并对每种疲劳试验方法的试验目的、适用条件、试验试样、所需仪器、具体步骤和数据处理进行了介绍.

Metal fatigue tests have been applied to measure the fatigue admissible stresses of metal materials and to draw the fatigue curves of materials,and then measure the fatigue limits under the condition of alternating stress.There are lots of testing methods about fatigue study.According to the national standards and some exiting literature,some general fatigue test methods were summarized in detail,including the single point fatigue test method,the up-and-down fatigue test method,the high frequency vibration fatigue test method,the ultrasonic fatigue test method and the fatigue test method with infrared thermal imaging technology.For each method,the test purpose,suitable conditions,test samples,instruments,test steps and data processing were introduced.