Research of Ultrasonic Oblique Incidence for Testing Bonding Strength Weakening in SRM

Abstract:

According to bonding strength weakening in SRM bonding structure, the decreases of elastic modulus in adhesive layer have been used to characterise the bonding strength weakening in adhesive layer. Ultrasonic propagation characteristics with bonding strength weakening in adhesive layer has been simulated. Based on analysing the relation between reflection coefficient and incident angle, the optimal test strategy has been put forward. According to test strategy, the experiment of ultrasonic oblique incidence has been done to test bonding strength weakening, the average energy of reflected wave from test points has been taken as signal property to characterise reflection coefficient. The results show that the energy of reflected wave can reflect the extent of bonding strength weakening, can effectively achieve quantitative test of strength weakening.

• Periodical: Applied Mechanics and Materials (Volumes 275-277)
• Pages: 819-824
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.275-277.819
• Online since: January 2013
• Authors: Chun An Ai, Yu Liu, Xu Zhi Gao, Li Jian
• Keywords: Oblique Incidence, Quantitative, Reflection Coefficient, Strength Weakening

References

[1] Yin Huali, Wang Qinghe. Factors of influencing the bond characteristics at interface [J]. Journal of Solid Rocket Technology, 1998, 21(3): 40-46.

[2] R. D. Adams, B. W. Drinkwater. Nondestructive testing of adhesively-bonded joints [J]. NDT&E International, 1997, 30(2): 93-98.

DOI: 10.1016/s0963-8695(96)00050-3

[3] P. Cawley. Ultrasonic measurements for quantitative NDE of adhesive joints potential and challenges [J]. IEEE Ultrasonics Symposium. 1992, 10: 767-772.

DOI: 10.1109/ultsym.1992.275846

[4] LI Tao, etc. Analysis and nondestructive testing of defects for solid rocket motor [J]. Nondestructive Testing, 2006, 28(10): 541-544.

[5] Yuan Hua, Wang Zhaoba. Research on the testing technology of interracial debonding of multilayered composite materials[J]. Mechanical Engineering&Artomation, 2008(6): 118—119.

[6] Xu Mengmeng. Analysis on interracial debond crack of SRM [J]. Journal of Solid Rocket Technology, 2008, 31(2): 121-124.

[7] S. I. Rokhlin and D. Marom. Study of adhesive bonds using low frequency obliquely incident ultrasonic waves[J]. Journal of the Acoustical Society of America, 1986, 80(2): 585~590.

DOI: 10.1121/1.394053

[8] A. K. Moidu, A. N. Sinclair and J. K. Spelt. Use of focused ultrasonic beams to characterized the interfacial region in bonded joints[J]. IEEE Ultrasonics Symposium, 1995, pp: 775~778.

DOI: 10.1109/ultsym.1995.495681

[9] Knopoff, L. A matrix method for elastic wave problems. Bull. Am. Seismological soc., 1964. 54: 431-438.

DOI: 10.1785/bssa0540010431

[10] M. J. S. Lowe. Plate waves for the NDT of diffusion bonded titanium[D]. Mechanical Engineering, Imperial College, London, (1992).

[11] J. Szilard. Ultrasonic testing-non-conventional testing techniques[M]. John Wiley & Sons, Ltd., (1982).