(1. 東南大學(xué) 機(jī)械系, 南京 210096;
2. 華東船舶工業(yè)學(xué)院, 鎮(zhèn)江 212003;
3. 名古屋工業(yè)大學(xué), 日本名古屋 466-8555)
摘 要: 介紹了聲發(fā)射(AE)法研究形狀記憶合金的原理和基本方法。大量研究結(jié)果表明,通過檢測形狀記憶合金的AE信號(hào)、分析AE信號(hào)的特征參數(shù),可研究和評(píng)價(jià)溫度和應(yīng)力誘發(fā)馬氏體相變,了解其馬氏體相變過程及其特點(diǎn),進(jìn)而對(duì)作為AE源的形狀記憶合金本身的性能和狀態(tài)進(jìn)行評(píng)價(jià)。作為一種動(dòng)態(tài)無損檢測技術(shù),聲發(fā)射對(duì)研究形狀記憶合金智能材料和結(jié)構(gòu)起著重要作用。
關(guān)鍵字: 聲發(fā)射; 形狀記憶合金; 馬氏體相變
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


