近些年来,低周疲劳试验愈益受到重视。如何确保加荷同心度是该试验成败的关键。文献报导了美国实验室采用伍德合金夹具改善同心度的实例。我们于79年进口了英国Instron公司的该种夹具,80年投入使用,81年又添装自制高温装置。本文小结了伍德夹具的原理、结构及使用该夹具开展室温和高温低周疲劳的情况。 In recent years, low-cycle fatigue test more and more attention. How to ensure the concentricity of the load is the key to the success or failure of the test. The literature reports examples of the use of Wood-Alloy fixtures to improve concentricity in US laboratories. We imported this kind of fixture from England Instron company in 79 years and put it into use in 80 years, and in 81 years we added self-made high-temperature device. This article summarizes the principle, structure and the use of the fixture Wood carried out at room temperature and high temperature low cycle fatigue situation.