Abstract

Guided waves in an elastic plate are called forced-guided waves if they are generated by body forces and/or surface tractions. The normal-mode expansion method has been used extensively by numerous researchers and practitioners to solve for such forced-guided wave problems in plates. Using horizontally polarized shear waves as examples, this paper demonstrates that solutions from the normal-mode expansion method often do not describe fully the actual elastodynamic field in the plate. To improve upon it, this paper further develops a modified normal-mode expansion method that yields solutions that satisfy all elastodynamic equations including the Hooke’s law and prescribed traction boundary conditions, thus providing a full description of the elastodynamic field in the plate.

How to Cite:

Zhang, P. & Qu, J., (2019) “A modified normal-mode expansion method for forced-guided waves in plates”, Review of Progress in Quantitative Nondestructive Evaluation .