(1. 东南大学 机械系， 南京 210096；
2. 华东船舶工业学院， 镇江 212003；
3. 名古屋工业大学, 日本名古屋 466-8555)
摘 要: 介绍了声发射(AE)法研究形状记忆合金的原理和基本方法。大量研究结果表明，通过检测形状记忆合金的AE信号、分析AE信号的特征参数，可研究和评价温度和应力诱发马氏体相变，了解其马氏体相变过程及其特点，进而对作为AE源的形状记忆合金本身的性能和状态进行评价。作为一种动态无损检测技术，声发射对研究形状记忆合金智能材料和结构起着重要作用。
关键字: 声发射； 形状记忆合金； 马氏体相变
research of shape memory alloys
（1. Department of Mechanical Engineering，
Southeast University， Nanjing 210096, P.R.China;
2. East China Ship Building Institute of Technology，
Zhenjiang 212003, P.R.China;
3. Nagoya Institute of Technology， Nagoya 466-8555, Japan）
Abstract:The principle and characterization methods of acoustic emission (AE) on the research of shape memory alloys(SMA) were introduced. The results of research reviewed here show that AE，by detecting and analysing its signals，can be used in studying and evaluating heat or stress-induced martensitic transformation. As a dynamic non-destructive test technology，AE plays an important role in the study of SMA intelligent materials and structures.
Key words: acoustic emission; shape memory alloy; martensitic transformation
