Abstract Acoustic emission sensor calibration is the precondition for the quantitative detection of acoustic emission technique, reciprocity and surface pulse methods are main calibration methods. In order to investigate and verify the consistency of the two methods, reciprocity coefficient and equivalent reciprocity coefficient in surface pulse method of Rayleigh wave were calculated and compared. Time domain and frequency domain components of the force pulse and the corresponding velocity were obtained respectively by equivalent treatment of loading force and laser vibrometer. Based on the physical meaning of reciprocity coefficient, equivalent reciprocity coefficient is calculated by the ratio of the normal velocity to the exciting force per unit. Meanwhile the calibration systems of reciprocity and surface pulse method were established, the calibration results were compared and analyzed. Real and equivalent reciprocity coefficient calculations, as well as the experimental results based on the calibration system, showed good agreements between reciprocity and surface pulse method. The results also showed that effect of radial resonance of acoustic emission transducers caused by electrical excitation can be ignored in reciprocity calibration.
WANG Yu-ying,HE Long-biao,ZHU Hai-jiang, et al. Comparison of Reciprocity and Surface Pulse Methods for AE Sensor Calibration[J]. Acta Metrologica Sinica, 2017, 38(5): 621-625.
［1］杨瑞峰, 马铁华. 声发射技术研究及应用进展［J］. 中北大学学报: 自然科学版, 2006, 27(5): 456-461.
［2］Keprt J. Reciprocity and Step Function Calibration of Acoustícs Emission Sensor［C］//Proceedings of the 13st Conference STUDENT EEICT. 2007: 72-75.
［3］何龙标, 张瑞纹, 祝海江, 等. 互易法校准压电型声发射传感器的研究与实现［J］. 计量学报, 2014, 35(5): 479-483.
［4］Breckenridge F R, Watanabe T, Hatano H. Calibration of acoustic emission transducers: comparison of two methods［J］. Progress in Acoustic Emission, 1982,（1）: 448-458.
［5］梁家惠,杨爱武.表面脉冲和表面波互易标定的比对问题［J］.计量学报,1990,11(2):145-152.
［6］Keprt J, Benes P. A comparison of AE sensor calibration methods［J］. Journal of Acoustic Emission, 2008, 26: 60-70.
［7］Ono K, Cho H, Matsuo T. New characterization methods of AE sensors［J］. Journal of Acoustic Emission, 2010, 28: 256-277.
［8］ASTM E1106-2002,Standard method for primary calibration of acoustic emission sensors［S］.2002.
［9］ISO 12713-1998,Non-destructive testing-acoustic emission inspection-primary calibration of acoustic emission sensors［S］.1998.
［10］NDIS 2109-2004, Methods for absolute calibration of acoustic emission transducers by reciprocity technique［S］.2004.
［11］国家质量监督检验检疫总局.GB/T 19800-2005,声发射换能器的一级校准［S］.2005.
［12］Hatano H, Chaya T, Watanabe S, et al. Reciprocity calibration of impulse responses of acoustic emission transducers［J］. Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on, 1998, 45(5): 1221-1228.
［13］Lamb H. On the propagation of tremors over the surface of an elastic solid［J］. Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character, 1904, 203（359-371）: 1-42.
［14］Hatano H, Watanabe T. Reciprocity calibration of acoustic emission transducers in Rayleigh-wave and longitudinal-wave sound fields［J］. The Journal of the Acoustical Society of America, 1997, 101(3): 1450-1455.
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