Recently, I want to study the acoustoelastic effect of Lamb wave in composites, and use this property to measure the stress of carbon fiber reinforced composite T300/QY8911. The third order elastic modulus parameters of materials are required for the acoustic elastodynamics modeling. However, I only found the relevant parameters of T300/5208 in the paper, and did not find any relevant parameters of T300/QY8911. I wonder if anyone knows these parameters and would like to share them, I would appreciate it!
Harold Berjamin "The effect of applied stress on the phase and group velocity of guided waves in anisotropic plates". It was in this paper that I discovered the third-order elastic constant of T300/5208. In fact, I need the third order elastic constants in order to build the stress measurement model based on the Lamb wave acoustoelastic effect. Because the acoustoelastic effect of Lamb wave has the dispersive and multi-modal characteristics, it is necessary to select the optimized mode-frequency combination to achieve a better measurement effect. Moreover, the consistency between experimental and theoretical analysis results can better illustrate the accuracy of the measurement method.
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