疲劳寿命计是电阻－疲劳响应记忆元件，外形结构如同普通箔式应变计。介绍所研制疲劳寿命计的原理、恒幅交变应变下的电阻变化特性曲线标定、平均应变及变幅载响应等性能的测试方法和结果。实验结果表明，它有很高的疲劳响应及重复性和稳定性。其原理可用于多种目的的疲劳测试和结构疲劳监测元件。 Fatigue life meter is a resistance - fatigue response memory device, the shape of the structure as a common foil strain gauge. Introduced by the developed fatigue life meter principle, constant amplitude alternating resistance under the change of resistance curve calibration, the average strain and amplitude response and other properties of the test method and results. Experimental results show that it has high fatigue response and repeatability and stability. The principle can be used for a variety of purposes fatigue testing and structural fatigue monitoring components.