AN INVERSE PROBLEM FOR EVALUATION OF THE BOND QUALITY BY USING STONELEY WAVES
An inverse approach for evaluation the quality of the adhesive layer is formulated in this paper, based on the sensibility of Stoneley wave to defects. The inverse problem minimizes the least square distance between computed and measured wave signals arriving to receiver. The minimization algorithm has two steps: a genetic algorithm and a global minimisation procedure (quasi-Newton) in order to obtain a single solution. Based on the interplay of Stoneley waves with properties of the adhesive bond we show that it is possible to identify in a unique manner the location and size of the defect.
Key words: Inverse problems, Stoneley waves, adhesive layer, genetic algorithm.
Light, G.M., Kwun, H., Nondestructive evaluation of adhesive bond quality, Southwest Research Institute, San Antonio, Texas, 1989.
Jones, J.P., Whittier, J.S., Waves at a flexibly bonded interface, Journal of Applied Mechanics, 905-909, 1967.
Claus, R.O., Kline, R.A., Adhesive bond line interrogation using Stoneley wave methods, Journal of Applied Physics, 50(12), 8066-8069, 1979.
Franklin, H., Rousseau, M., Gatignol, P., Scholte-Stoneley Waves in a multilayered medium with elastic bond conditions at an interface, Physical Acoustics, pp 327-334, 1991.
Ting, T.C.T., Rayleigh waves, Stoneley waves, Love waves, Slip waves and one-component waves in a plate or layered plate, Journal of Mechanics of Materials and Structures, 4(4), 631-647, 2009.
Ting, T.C.T., Steady waves in an anisotropic elastic layer attached to a half-space or between two half-spaces - a generalization of Love waves and Stoneley waves, Math. Mech. Solids, 14(1-2), 52-71, 2009.
Wang, L., Gundersen, S.A., Existence of one component surface waves in anisotropic elastic media, Phys. Scripta. 47(3), 3394-404, 1993.
Shuvalov, A.L., General relationship for guided acoustic waves in anisotropic plates, P. Roy. Soc. Lond. A Mat., 460, 2049, 2671–2679, 2004.
Shuvalov, A.L., Every, A.G., Some properties of surface acoustic waves in anisotropic-coated solids, studied by the impedance method, Wave Motion, 36(3), 257–273, 2002.
Achenbach, J.D., Wave propagation in elastic solids, North-Holland Publ. Comp., Amsterdam, 1976.
Pham, C. V., Pham, T.H.G., On formulas for the velocity of Stoneley waves propagating along the loosely bonded interface of two elastic half-spaces, Wave Motion, 48, 46–56, 2011.
Qiang L,B., Lu, T., A Stoneley wave method to detect interlaminar damage of metal layer composite pipe, Frontiers of Mechanical Engineering, 10(1), 89–94, 2015.
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