铝合金疲劳裂纹发生过程的声发射信号特征研究  

Investigation on Acoustic Emission Signal Characteristics of Fatigue Crack Process in Aluminium Alloy

作　　者：黄华斌[1] 徐矛[1] 石磊[1] HUANG Huabin;XU Mao;SHI Lei(Aircraft Strength Research Institute of china,Xi'an 710065,China)

机构地区：[1]中国飞机强度研究所6室,西安710065

出　　处：《无损探伤》2022年第3期10-13,共4页Nondestructive Testing Technology

摘　　要：利用声发射技术针对常用的航空铝合金试件开展疲劳试验裂纹的监控研究。对不同形式的试件进行疲劳试验,利用声发射监控疲劳裂纹发生过程,通过对疲劳裂纹不同阶段的声发射信号参数的分析,获取铝合金试件疲劳裂纹不同阶段的声发射信号特征参数,从而为飞机结构疲劳试验声发射监控的裂纹评判提供参考。Investigation on Acoustic Emission signal of the fatigue crack in aluminium alloy.The fatigue cracking extended in the aluminium alloy was study using acoustic emission(AE) parametric analysis including hits, events and amplitudes.To obtain the process of fatigue cracking extended corresponding characteristics for Acoustic Emission Signals.These characteristics can offer reference for Acoustic Emission to monitor the aircraft frame of fatigue test in the aluminium alloy.

关 键 词：声发射 信号特征 参数分析 疲劳裂纹 

分 类 号：TG115.28[金属学及工艺—物理冶金]