Interaction Influence of Flaw and Stress on Lcr Wave Acoustoelastic Coefficient of Carbon Steel
Bin LIU1,*(), Chang-liang SHI2, Wen-bing MIAO1, Shi-yun DONG3
1 School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China 2 Guangdong Industrial Analysis and Testing Center, Guangzhou 510650, China 3 National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, China
Based on Lcr wave acoustoelastic theory, the influence mechanism of blind-hole on stress evaluation with Lcr wave was discussed. Combined with equivalent method, the blind-holes with different diameters were preset, the difference in time of flight between Lcr wave was calculated by cross correlation coefficient function, the Lcr wave acoustoelastic coefficient was determined with linear fitting function, the influence mechanism of blind-hole diameter on Lcr wave acoustoelastic coefficient was clarified based on the elastic plastic deformation theory and stress concentration theory of hole. The results show that when the diameter of blind-hole is different, the change rule of the difference in time of flight between Lcr wave is basically the same as stress increases, the difference in time of flight between Lcr wave increases linearly as stress increases, while the nonlinear feature is also gradually obvious, the maximum stress in linear stage is less than the yield strength of specimen, the Lcr wave acoustoelastic coefficient decreases gradually as blind-hole diameter increases, and it tends to be constant. The analysis shows that the stress concentration is seen as the main reason for above results, anisotropic structure of specimen and blind-hole depth are also the important reasons for that.
SUN H L , ZHANG T . Research on residual stress of argon arc welding and friction stir welding for aluminium alloy of carbody[J]. Railway Locomotive & Car, 2016, 36 (4): 99- 102.
LIU X J , LIN J , LEI Y P , et al. Residual stress test and finite element analysis of titanium alloy surface obtained by electron beam welding[J]. Journal of Aeronautical Materials, 2016, 36 (4): 35- 40.
doi: 10.11868/j.issn.1005-5053.2016.4.005
3
赵翠华. 残余应力超声波测量方法研究[D]. 哈尔滨: 哈尔滨工业大学, 2008.
3
ZHAO C H. Study on ultrasonic measurement of residual stress[D]. Harbin: Harbin Institute of Technology, 2008.
WANG X , SHI Y W , LIANG J , et al. Stress in pre-stretched aluminum alloy plate by acoustic elasticity[J]. Journal of Materials Engineering, 2015, 43 (12): 95- 100.
doi: 10.11868/j.issn.1001-4381.2015.12.016
QI H Y , LIU J L , YANG X G , et al. Investigation on residual stress of plasma sprayed thermal barrier coatings based on moire interferometry and hole drilling method[J]. Journal of Aerospace Power, 2011, 26 (3): 617- 621.
6
吴剑剑. 淬火硬化层残余应力分布磁记忆检测[D]. 南昌: 南昌航空大学, 2015.
6
WU J J. Magnetic memory detection of the distribution of residual stress on hardened layer[D]. Nanchang: Nangchang Hangkong University, 2015.
7
YASHAR J , MEHDI A , MEHDI A N . Using finite element and ultrasonic method to evaluate welding longitudinal residual stress through the thickness in austenitic stainless steel plates[J]. Materials & Design, 2013, 45, 628- 642.
8
YASHAR J , SEYEDALI S , MEHDI A N . Taguchi optimization and ultrasonic measurement of residual stresses in the friction stir welding[J]. Materials & Design, 2014, 55, 27- 34.
9
SEYEDALI S , MEHDI A N , YASHAR J , et al. Using ultrasonic waves and finite element method to evaluate through-thickness residual stresses distribution in the friction stir welding of aluminum plates[J]. Materials & Design, 2013, 52, 870- 880.
LU H . Ultrasonic residual stress measurement system based on entire envelope weighting algorithm[J]. Transactions of the China Welding Institution, 2015, 36 (3): 101- 104.
LU H , LIU X S , MENG L C , et al. Residual stress evaluation of high-speed train body structure by ultrasonic method and verification[J]. Transactions of the China Welding Institution, 2009, 30 (4): 81- 84.
SHI Y F , SHEN Z H , NI X W , et al. Welding stress measurement using laser-generated Rayleigh wave in aluminum alloys[J]. Chinese Journal of Lasers, 2008, 35 (10): 1627- 1631.
doi: 10.3321/j.issn:0258-7025.2008.10.038
MA Z Q , LIU X S , ZHANG S P , et al. Curved convex face residual stress measurement by ultrasonic method[J]. Transactions of the China Welding Institution, 2011, 32 (11): 25- 28.
14
HU E Y , HE Y M , CHEN Y M . Experimental study on the surface stress measurement with Rayleigh wave detection technique[J]. Applied Acoustics, 2009, 70 (2): 356- 360.
doi: 10.1016/j.apacoust.2008.03.002
WEI Z , XU W , QU Y X , et al. On acoustoelasticity of surface acoustic wave for ultrasonic NDT[J]. Journal of Hebei University of Technology, 2002, 31 (1): 10- 14.
16
AHARON Z , KENNETH J . Measurement of acoustoelastic coefficients of Rayleigh waves in steel alloys[J]. Journal of Nondestructive Evaluation, 1982, 3 (2): 115- 124.
doi: 10.1007/BF00568968
17
HUGUES D S , KELLY J L . Second-order elastic deformation of solid[J]. Physical Review, 1951, 92 (5): 1145- 1149.
LIU B , DONG S Y , XU B S , et al. Study on influence of calculating length on evaluation result of stress by surface acoustic wave for coating[J]. Journal of Materials Engineering, 2011, (4): 54- 57.
LIU B. Ultrasonic and metal magnetic memory testing method for quality nondestructive evaluation of remanufacturing coating[D]. Harbin: Harbin Institute of Technology, 2012.
2017, Vol. 45 
), 石常亮2, 缪文炳1, 董世运3
