CAJ | 학술논문

　　利用声发射技术对焊接气孔、夹渣缺陷、未焊透缺陷以及无缺陷等试样进行承受载荷拉伸试验检测，得到了拉伸过程中试样的加载曲线和关键声发射信号。结合声发射单参数经历图分析，发现不同类型的缺陷表现出不同的声发射特性，运用声发射信号的主要关联图进行分析，可明显区分出损伤过程的不同阶段。
　　이용성발사기술대한접기공、협사결함、미한투결함이급무결함등시양진행승수재하랍신시험검측，득도료랍신과정중시양적가재곡선화관건성발사신호。결합성발사단삼수경력도분석，발현불동류형적결함표현출불동적성발사특성，운용성발사신호적주요관련도진행분석，가명현구분출손상과정적불동계단。
Tensile samples with gas cavity ,bar slag defect ,incomplete welding defect were in-spected by acoustic emission technology .T he loading curve and the key acoustic emission signal during tensile test were obtained ,it was discovered that different damages showed different a-coustic emission feature by analyzing the single parameter-time relationships of acoustic emission . At the same time ,it could distinguish the different stages of injury by using major association graph of acoustic emission signal .