Abstract
The present study proposes an estimation curve of crack-depth for the surface of a homogeneous body in terms of numerical simulations based on the impact elastic wave method, specifically the elastodynamic finite integration technique. A rectangular solid specimen with a specified opened crack is modeled for the numerical simulation. Giving Ricker wavelet to the specimen model, we observed the attenuation of wave passing through a prescribed surface crack on the specimen.
It was concluded from the numerical investigation that the magnitude of attenuation strongly depends on the ratio of wavelength to crack-depth, but hardly on materials used. According to these outputs, the present study formulated the estimation curve of crack-depth and proposed an entire procedure to evaluate crack-depth on the surface of homogeneous body in practical use.
