Experimental and Numerical Investigation of the Micro-Crack Damage in Elastic Solids by Two-Way Collinear Mixing Method

被引:11
|
作者
Liu, Hongjun [1 ]
Zhao, Youxuan [1 ,2 ]
Zhang, Han [3 ]
Deng, Mingxi [1 ]
Hu, Ning [4 ,5 ,6 ]
Bi, Xiaoyang [6 ]
机构
[1] Chongqing Univ, Coll Aerosp Engn, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Chongqing Key Lab Heterogeneous Mat Mech, Chongqing 400044, Peoples R China
[3] Chinese Acad Sci, Inst Acoust, Key Lab Noise & Vibrat, Beijing 100190, Peoples R China
[4] Hebei Univ Technol, State Key Lab Reliabil & Intelligence Elect Equip, Tianjin 300401, Peoples R China
[5] Hebei Univ Technol, Natl Engn Res Ctr Technol Innovat Method & Tool, Tianjin 300401, Peoples R China
[6] Hebei Univ Technol, Sch Mech Engn, Tianjin 300401, Peoples R China
关键词
ultrasonic nonlinearity; wave mixing; micro-cracks; experiment; numerical simulation; NONLINEAR ULTRASONIC-DETECTION; LAMB WAVES; 2ND-HARMONIC GENERATION; ACOUSTIC NONLINEARITY; FATIGUE DAMAGE; GUIDED-WAVES; THIN PLATES;
D O I
10.3390/s21062061
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
This study experimentally and numerically investigated the nonlinear behavior of the resonant bulk waves generated by the two-way collinear mixing method in 5052 aluminum alloy with micro-crack damage. When the primary longitudinal and transverse waves mixed in the micro-crack damage region, numerical and experimental results both verified the generation of resonant waves if the resonant condition omega(L)/omega(T)=2 kappa/(kappa-1) was satisfied. Meanwhile, we found that the acoustic nonlinearity parameter (ANP) increases monotonously with increases in micro-crack density, the size of the micro-crack region, the frequency of resonant waves and friction coefficient of micro-crack surfaces. Furthermore, the micro-crack damage in a specimen generated by low-temperature fatigue experiment was employed. It was found that the micro-crack damage region can be located by scanning the specimen based on the two-way collinear mixing method.
引用
收藏
页码:1 / 20
页数:20
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