利用垂直入射的偏振横波换能器,首先研究了偏振方向与铝合金棒材挤压方向成不同角度的超声横波速度的差异,然后对不同应力下与应力方向成不同角度偏振的超声横波速度的变化进行了研究.试验结果表明:在无应力时,平行于挤压方向偏振的横波和垂直于挤压方向偏振的横波的速度差异不大,棒材的各向异性对不同方向偏振横波速度的影响不明显.当施加应力后,平行于应力方向偏振的横波传播时间升高,垂直于应力方向偏振的横波传播时间降低;在剔除材料弹性变形所带来的声传播距离变化的影响后发现,平行于应力方向偏振的横波声速降低,垂直于应力方向偏振的横波声速升高;与偏振方向平行的应力对横波速度的影响大于与偏振方向垂直的应力对声速的影响.
参考文献
| [1] | DUQUENNOY M;OUAFLOUH M;QIAN M L et al.Ultrasonic characterization of residual stresses in steel rods using a laser line source and piezoelectric transducers[J].NDT & E International,2001,34:355-362. |
| [2] | 袁发荣;伍尚礼.残余应力测试与计算[M].长沙:湖南大学出版社,1987 |
| [3] | P. J. Withers;H. K. D. H. Bhadeshia .Residual stress Part 1 - Measurement techniques[J].Materials Science and Technology: MST: A publication of the Institute of Metals,2001(4):355-365. |
| [4] | 赵翠华 .残余应力超声波测量方法研究[D].哈尔滨工业大学,2008. |
| [5] | N.S. Rossini;M. Dassisti;K.Y. Benyounis;A.G. Olabi .Methods of measuring residual stresses in components[J].Materials & design,2012(Mar.):572-588. |
| [6] | 王晓,史亦韦,梁菁,何方成,陶春虎.超声测量非均匀应力场及应力梯度的研究[J].航空材料学报,2014(01):56-61. |
| [7] | Karabutov, A;Devichensky, A;Ivochkin, A;Lyamshev, M;Pelivanov, I;Rohadgi, U;Solomatin, V;Subudhi, M .Laser ultrasonic diagnostics of residual stress[J].Ultrasonics,2008(6/7):631-635. |
| [8] | Don E. Bray .Ultrasonic Stress Measurement and Material Characterization in Pressure Vessels, Piping, and Welds[J].Journal of pressure vessel technology,2002(3):326-335. |
| [9] | BENSON R W;RAELSON V J .Acousticelasticity[J].Prod.Eng,1959,30:56-59. |
| [10] | HSU N N .Acoustical birefringence and use of ultrasonic waves for experimental stress analysis[J].EXPERIMENTAL MECHANICS,1975,14(5):147-152. |
| [11] | 吴运新,龚海,廖凯.铝合金预拉伸板残余应力场的评估模型[J].华南理工大学学报（自然科学版）,2011(01):90-94. |
| [12] | 吴克成 .声弹性应力测量[J].实验力学,1987,2(4):3-13. |
| [13] | PRITCHARD S E .The use of ultrasonics for residual stress analysis[J].NDT INTERNATIONAL,1987,20(1):57-60. |
| [14] | LU H;LIU X S;YANG J G et al.Ultrasonic stress evaluation on welded plates with Lcr wave[J].SCIENCE AND TECHNOLOGY OF WELDING AND JOINING,2008,13(1):70-74. |
| [15] | NELSON N H .Acoustical birefringence and the use of ultrasonic waves for experimental stress analysis[J].Experimental Mechanics,1974,14(5):169-176. |
| [16] | SAYERS C M .Ultrasonic velocities in anisotropic polycrystalline aggregates[J].Journal of Physics D:Applied.Physics,1982,15(11):2157-2167. |
| [17] | WANG X;TAO C H;SHIYW et al.Study on Ultrasonic Measurement for Non-uniform Stress Field[J].Advanced Material Research,2013,800(2013):213-217. |
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