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Near-Field Acoustic Emission Sensing Performance of Piezoelectric Film Strain Sensor

This article deals with near-field acoustic emission (AE) signal sensing with a low-profile piezoelectric film strain sensor. In general, AE signals can be represented as a summation of moment tensor (dipoles or double couples) weighted Greens’ functions. Basic theories of the Green’s function and moment tensor are introduced first. The formulation presented here extends the AE elastodynamic solution to stress-wave induced surface strain response in half space. As a special case with potential use for sensor calibration, stress waveinduced surface strain response to a surface pulse load is presented. To verify the derivation, experiments were carried out with glass capillary breakage on a large steel block. The experimental result matches the theoretical prediction fairly well. Based on the surface pulse case study, the characteristics of strain and displacement signals are illustrated for both P and Rayleigh wave arrivals, which could provide insights for such strain sensor design and implementation. Due to the finite sensing area of piezoelectric film strain sensor, its aperture effect cannot be neglected in practical use, especially in higher frequency AE signal sensing, which is also investigated in this article.

1. J.-B. Ihn and F.-K. Chang. Smart Materials and Structures 13:621–630 (2004). 2. X. Li and Y. Zhang. Fatigue and Fracture of Engineering Materials and Structures 31:684–694 (2008). 3. S. Park, C.-B. Yun, Y. Roh, and J.-J. Lee. Smart Materials and Structures 15:957–966 (2006). 4. L. Yu, S. Momeni, V. Godinez, V. Giurgiutiu, P. Ziehl, and J. Yu. Advances in Civil Engineering 2012, Article ID 402179 (2012). 5. C. B. Yun, H. Sohn, J. J. Lee, S. Park, M. L. Wang, Y. F. Zhang, and J. P. Lynch. Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, March 8–11, 2010, San Diego, California, SPIE 7647 (2010). 6. X. Li and Y. Zhang. Smart Structures and Systems 4:565–582 (2008). 7. M. Ohtsu. Research in Nondestructive Evaluation 6:169–184 (1995). 18 C. ZHOU AND Y. ZHANG 8. M. Ohtsu and K. Ono. Journal of AE 3:124–133 (1984). 9. S. Yuyama, T. Imanaka, and M. Ohtsu. Journal of Acoustic Society of America 83:976–983 (1988). 10. C. M. Fortunko, M. A. Hamstad, and D. W. Fitting. Ultrasonics Symposium. Proceedings., IEEE 1: 327–332 (1992). 11. T. M. Proctor. Journal of the Acoustical Society of America 71:1163–1168 (1982). 12. J. Sirohi and I. Chopra. Journal of Intelligent Material Systems and Structures 11:246–257 (2000). 13. L. R. Johnson. Geophysical Journal of the Royal Astronomical Society 37:99–131 (1974). 14. K. Aki and P. G. Richards. Quantitative Seismology: Theory and Methods, 2nd Edition. University Science Books, Virginia (2002). 15. T. Lay and T. C. Wallace. Modern Global Seismology. Academic Press, California (1995). 16. C. L. Pekeris. Proc. Nut. Acad. Sci. 41:469–480 (1955). 17. E. Pinney. Bulletin of the Seismological Society of America 44:571–596 (1954). 18. P. G. Richards. Bulletin of the Seismological Society of America 69:947–956 (1979). 19. ASTM. Standard Method for Primary Calibration of Acoustic Emission Sensors, pp. E1106–07. American Society of Testing and Materials (ASTM), Philadelphia, Pennsylvania (2007). 20. H. M. Mooney. Bulletin of the Seismological Society of America 64:473–491 (1974). 21. Y. Kim and H. Kim. Journal of Physics D: Applied Physics 26:253–258 (1993). 22. L. E. Kinsler, A. R. Frey, A. B. Coppens, and J. V. Sanders. Fundamental of Acoustics, pp. 179–496. John Wiley & Sons, New York, (1999).
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