金属材料声发射信号的传播特性是研究声发射技术的重要基础，声阻抗是表征金属材料动态特性的重要物理量，用声阻抗研究声发射信号传播特性，将有助于声发射信号在损伤检测中的应用。本文在综述金属材料声阻抗实测估计研究的基础上，提出了估计金属材料声发射信号声阻抗的方法，探讨了金属材料在经受荷载并卸载后以断铅声发射信号估计其声阻抗的方法。数值模拟和实验数据分析表明，通过断铅声发射可以估计材料经受荷载的声阻抗变化，金属材料声发射信号声阻抗估计值可以较好的表征声发射信号的传播特性，甚至还可能对材料经受荷载情况进行声阻抗成像，可能成为材料内部损伤检测的新方向。
Abstract
Sound impedance is an important physical quantity to characterize dynamic characteristics of metals. Studying propagation characteristics of acoustic emission (AE) signals using sound impedance is helpful to application of AE signals in damage detection. Here, based on reviewing studies on metal material sound impedance’s actual measurement and estimation, the sound impedance estimation method based on AE signals was proposed, and the method to estimate a metal material’s sound impedance was explored using its lead-broken AE signals after it firstly loaded and then unloaded. Numerical simulation and test data analysis showed that lead broken AE signals can be used to estimate sound impedance changes of a metal material bearing load, metal material’s sound impedance estimation value based on its AE signals can better characterize AE signal propagation characteristics; even the sound impedance imaging may be realized for a metal material bearing load process to become a new direction of material inside damage detection.
关键词
金属材料 /
声发射 /
声阻抗 /
传播特性 /
损伤
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Key words
metal /
acoustic emission /
sound impedance /
experiment /
damage
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参考文献
[1]郝建军， 赵媛，郭银景. 平面弹性波信号在地层介质中的传输损耗特性[J]. 煤炭学报，2011，36 (s1): 211-214
HAO Jian-jun，ZHAO Yuan，GUO Yin-jing，Power loss characteristics of plane elastic wave signal propagating in layered earth medium channel[J]，JOURNAL OF CHINA COAL SOCIETY，2011，36 (s1): 211-214
[2]邵忍平，徐志锋，薛腾. 裂纹故障齿轮结构声振特性与模拟研究[J]. 航空动力学报，2010，25 (6): 1327-1334
SHAO Ren-ping，XU Zhi-feng，CAO Jing-ming，Acoustic vibration characteristic of crack gear structure and simulation[J]，Journal of Aerospace Power，2010，25 (6): 1327-1334
[3]吴先梅，张碧星.分层圆柱中的瞬态波传播的有限元分析[J].中国声学学会2009年青年学会议[CYCA09]论文集，2009，28 (5): 179-180
[4] 郭福平．波导杆声发射特性实验研究［D］．大连:大庆石油学院，2008
[5]毛汉颖，黄振峰，韦花貌，毛汉领. 声发射信号检测中谐振传导杆的设计与试验研究[J], 振 动与冲击，2014，33（17）：179-183
MAO Han-ying，HUANG Zhen-feng，WEI Hua-mao，MAO Han-ling，Design and tests for resonant conductor levers in acoustic emission monitoring[J]，JOURNAL OF VIBRATION AND SHOCK，2014，33（17）：179-183
[6]毛汉颖，曾毅，黄振峰，毛汉领，几种典型接合界面对声发射信号衰减的影响[J]，无损检测，2014，36（1）：41-44
MAO Han-ying, ZENG Yi, HUANG Zhen-feng, MAO Han-ling, Experimental study of the transmission characteristics of acoustic emission signals through several typical interfaces[J], NDT, 2014，36（1）：41-44
[7]肖俨衍，卢文秀，褚福磊，声发射信号在不同结构轴中传播特性研究[J]，振动与冲击，2014，33（5）：76-81
XIAO Yan-yan，LU Wen-xiu，CHU Fu-lei，Propagation characteristics of acoustic emission in different structural shafts[J]，JOURNAL OF VIBRATION AND SHOCK，2014，33（5）：76-81
[8]王向红，罗志敏，胡宏伟，尹艳山，毛汉领，裂纹长度和位置影响下声发射信号传播特性[J]，仪器仪表学报，2015，36（12）：2867-2873
Wang Xianghong，Luo Zhimin，Hu Hongwei，Yin Yanshan，Mao Hanling，Propagation characteristics of acoustic emission signals affected by the length and the position of cracks[J]，Chinese Journal of Scientific Instrument，2015，36（12）：2867-2873
[9] D. Mba, L.D. Hall, The transmission of acoustic emission across large-scale turbine rotors [J]. NDT&E International，2002,35(8): 529–539
[10] F. Dahmene, A. Laksimi, S. Hariri, C. Hervé, Acoustic wave propagation in austenitic stainless steel AISI 304L: Application examples [J]. International Journal of Pressure Vessels and Piping, 2012, 92 (4):77—83
[11] F. Elasha, M. Greaves, D. Mba, A comparative study of the effectiveness of vibration and acoustic, emission in diagnosing a defective bearing in a planetary gearbox[J]. Applied Acoustics, 2017,115 (1): 181–195
[12]李功燕. 材料声阻抗高精度重建关键技术的研究[D]. 浙江大学, 2004.
[13]陈玉喜, 单秉昆. 一种新的声阻抗值测量方法[J]. 科技视界, 2015(09):6-11.
CHEN Yu-xi, SHAN Bing-kun, A New Method for Testing Sound Impedance[J], Science & Technology Vision, 2015(09):6-11
[14]杨克己. 嵌入式便携声阻抗重建系统的设计与实现[J]. 工程设计学报, 2005,12(01):20-23
YANG Ke-ji, Design and implementation of embedded and portable ultrasonic impedance reconstruction system[J], Journal of Engineering Design, 2005,12(01):20-23
[15]廖振鹏. 工程波动理论导论[M]. 北京: 科学出版社, 2002.
[16]罗松南, 周正平, 童桦, 等. 非均匀损伤介质中利用波传播理论对损伤参数的反演[J]. 振动与冲击, 2005,24(6):17-20.
Luo Songnan, Zhou Zhenping, Tong Hua, Wei Xiaomei, Inversion of wave propagation to iedentify damage degree inhomogeneous damaged media[J], JOURNAL OF VIBRATION AND SHOCK,2005, 24(6):17-20.
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