Aim to construct an analytic solution for the asymptotic field near a tensile crack tip of power-law hardening material under Plane stress condition.

The method of moments (MOM) combining with the asymptotic waveform evaluation (AWE) technique is used to predict scattering fields of an arbitrarily shaped groove in a perfectly conducting plane.

And the asymptotic stress ratio is a little larger for the specimens with vertical bedding plane than that with horizontal one.