不同缺陷Q345钢试样拉伸试验的声发射特征  

Acoustic Emission Characteristic of Different Q345 Steel Plates Containing Defects on Tensile Test

作　　者：张昌稳[1] 叶辉[1,2] 李强[1] 刘钢[1] 

机构地区：[1]福州大学材料学院,福建福州350108 [2]福建省特种设备检验研究院,福建福州350008

出　　处：《石油化工设备》2013年第4期5-9,共5页Petro-Chemical Equipment

基　　金：福建省质量技术监督局科技计划项目(FJQI201008)

摘　　要：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。Tensile samples with gas cavity, bar slag defect, incomplete welding defect were inspected by acoustic emission technology. The loading curve and the key acoustic emission signal during tensile test were obtained, it was discovered that different damages showed different acoustic 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.

关 键 词：Q345 拉伸试验 关联分析 声发射评估 

分 类 号：TQ050.4[化学工程]