Non Destructive Evaluation of Glass-Epoxy Composite using Impact-echo Method
الموضوعات :
MohammadMahdi Amiri
1
(
PhD Student
Center of Excellence in Precision Dimensional Measurement
Technology Development Institute (TDI), ACECR, Sharif University Branch.
Tehran, Iran.
)
M. Tabatabaee Ghomi
2
(
Assistant Professor
Center of Excellence in Precision Dimensional Measurement
Technology Development Institute (TDI), ACECR, Sharif University Branch.
Tehran, Iran.
*Corresponding author
)
Gh. Liaghat
3
(
Full Professor
Mechanical Engineering Department
Tarbiat Modares University
Tehran, Iran.
)
الکلمات المفتاحية: Composite plates, Non-destructive test (NDT), Impact-Echo, P-Wave,
ملخص المقالة :
In this paper a new method for Nondestructive testing or Nondestructive evaluation is proposed for Glass-Epoxy composite. For this purpose, impact-echo is used to evaluate the properties of composite materials, detecting internal defects and thickness measurement. In the impact-echo method a steel ball impacts on a composite plate and generates stress waves or P-waves which will be transferred into the plate. The results show that impact response of the composite plate for dominant thickness frequency for measuring thickness and locating the defect is in agreement with the normal measurement. Results represent that this method could be used for thickness measurement and flaw detection of Epoxy-Glass composites with a reasonable accuracy.
[1] Sansalone, J., Streett, W. B., “Nondestructive Evaluation of Concrete and Masonry”, Bullbrier Press, Ithaca, NY, pp. 45-51, 1997.
[2] Hsiao, C., Cheng, C., AND Liou, Juang, T., “Detecting flaws in concrete blocks using the impact-echo method”, NDT&E International, No. 41, 2008, pp. 98-107.
[3] Wang, J., Chang, T., Chen, B., AND Wang, H., “Determination of Poisson’s ratio of solid circular rods by impact-echo method”, Journal of Sound and Vibration, No. 331, 2012, pp. 1059-1067.
[4] Mori, K., Spagnoli, A., Murakami, Y., Kondo, G., and Torigoe, I., “A new non-contacting non-destructive testing method for defect detection in concrete”, NDT&E International, No. 35, 2002, pp. 399-406.
[5] Tabatabaee Ghomi, M., Mahmoudi, J., and Darabi, M., “Concrete plate thickness measurement using the indirect impact-echo method”, Nondestructive Testing and Evaluation, No. 28:2, pp. 119-144, DOI: 10.1080/10589759.2012.711329.
[6] Villain, G., Le Marrec, L., and Rakotomanana, L., “Determination of the bulk elastic moduli of various concretes by resonance frequency analysis of slabs submitted to impact echo”, Nondestructive testing in civil engineering, EJECE–15, 2011, pp. 601–617.
[7] Stavroulakis, G. E., “Impact-echo from a unilateral interlayer crack. LCP-BEM modelling and neural identification”, Engineering Fracture Mechanics, No. 62, 1999, pp. 165-184.
[8] Kim, D. S., Kim, H. W., and Kim, W., “Parametric study on the impact-echo method using mock-up shafts”, NDT&E International, No. 35, 2002, pp. 595–608.
[9] Mott, P. H., Roland, C. M., “Limits to Poisson's ratio in isotropic materials-general result for arbitrary deformation”, Published 17 April 2013, The Royal Swedish Academy of Sciences Physica Scripta, Vol. 87, No. 5, pp. 34-41.
[10] URL: http://www.christinedemerchant.com/carbon-kevlar-glass-comparison.html
[11] Geotech, J., Engng, G., “Report of a task force sponsored by the G-I deep foundations committee”, Nondestructive evaluation of drilled shafts, No. 126(1), 2000, pp. 92–95.
[12] Cheng, C., Lin, Y., Hsiao, C., and Chang, H., “Evaluation of simulated transfer functions of concrete plate derived by impact-echo method”, NDT&E Int., No. 40, 2007, pp. 239–249.
