基于电磁超声瑞利波的平面应力测量方法
Plane stress measurement based on the electromagnetic ultrasonic Rayleigh wave
摘 要
针对平面应力快速、无损的测量需求，基于电磁超声及瑞利波平面应力测量原理，设计了三发三收式电磁超声换能器。详细介绍了三发三收式瑞利波探头结构及测量系统，改进了基于三方向超声波波速计算平面应力的公式，一次定位即可实现金属平面应力的测量。试验测量5052搅拌摩擦焊铝合金板的平面应力，并将测量结果与盲孔法结果进行对比，验证了所设计电磁超声探头的实用性。
电磁超声
瑞利波
无损测量
搅拌摩擦焊
plane stress
EMAT
Rayleigh wave
nondestructive measurement
FSW
Abstract
Aiming at the requirement of fast and nondestructive measurement of plane stress, a three-transmitters-three-receivers Rayleigh wave electromagnetic ultrasonic transducer (EMAT) was designed based on the principles of electromagnetic ultrasound. The structure and measurement system of the electromagnetic ultrasonic probe were introduced in details, and the formula for calculating plane stress based on the three-directions ultrasound velocity was modified. The plane stress can be measured when the probe was positioned once. A plane stress measurement experiment was performed in 5052 aluminum alloy by friction stir welding. And the measurement results were compared with the hole-drilling method, which verified the feasibility of the designed electromagnetic ultrasonic probe.
中图分类号 TG115.28
所属栏目 试验研究
基金项目 国家重点研发计划资助项目（2018YFA0704603
收稿日期 2020/3/16
修改稿日期
网络出版日期
作者单位点击查看
备注刘彦坤(1995-),男,硕士研究生,研究方向为电磁超声无损检测
引用该论文: LIU Yankun,LIU Haibo,Li Yapeng,LIU Tianran,WANG Yongqing. Plane stress measurement based on the electromagnetic ultrasonic Rayleigh wave[J]. Nondestructive Testing, 2020, 42(9): 33～38
刘彦坤,刘海波,李亚鹏,刘天然,王永青. 基于电磁超声瑞利波的平面应力测量方法[J]. 无损检测, 2020, 42(9): 33～38
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参考文献
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【2】DING X, WU X, WANG Y. Bolt axial stress measurement based on a mode-converted ultrasound method using an electromagnetic acoustic transducer[J]. Ultrasonics, 2014, 54(3):914-920.
【3】HIRAO M, OGI H, FUKUOKA H. Advanced ultrasonic method for measuring rail axial stresses with electromagnetic acoustic transducer[J]. Research in Nondestructive Evaluation, 1994, 5(3):211-223.
【4】HU E, HE Y, CHEN Y. Experimental study on the surface stress measurement with Rayleigh wave detection technique[J]. Applied Acoustics, 2009, 70(2):356-360.
【5】JASSBY K, KISHONI D. Experimental-technique for measurement of stress-acoustic coefficients of Rayleigh-waves[J]. Experimental Mechanics, 1983, 23(1):74-80.
【6】WANG Y, LI Y, LIU H, et al. Plane residual stress measurement using ultrasonic considering weak anisotropy of metallic material[J]. Aip Advances, 2018, 8(10):105008.
【7】THRING C B, FAN Y, EDWARDS R S. Focused rayleigh wave EMAT for characterisation of surface-breaking defects[J]. NDT & E International, 2016, 81:20-27.
【8】WILCOX P D, LOWE M, CAWLEY P. Omnidirectional guided wave inspection of large metallic plate structures using an EMAT array[J]. IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, 2005, 52(4):653-665.
【9】SMITH J F, THOMPSON R B. Simultaneous ultrasonic evaluation with differentiation of stress and texture[J]. Journal of Materials Engineering and Performance, 1994, 3(2):273-281.
【10】HAYES M, RIVLIN R S. Surface waves in deformed elastic materials[J]. Archive for Rational Mechanics and Analysis, 1961, 8(5):358-380.
【11】HATAMLEH O, RIVERO I V, MAREDIA A. Residual stresses in friction-stir-welded 2195 and 7075 aluminum alloys[J]. Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 2008, 39(12):2867-2874.
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