Abstract
An adaptive time-delay self-focusing technique has been used to focus ultrasound on the edge (tip) of a surface-breaking crack emanating from the opposite side of a plane. The diffraction of the focused signal has been measured with the array. Simulation of the self-focusing process and the diffraction by the crack edge has been carried out to obtain numerical results for the edge diffraction. Ray tracing has been used to determine the incident wave field in the plate. Comparisons between the numerical results and the measured data show good agreement. The results have been used to determine the depth of the crack.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 33-42 |
| Number of pages | 10 |
| Journal | Journal of Nondestructive Evaluation |
| Volume | 19 |
| Issue number | 1 |
| DOIs | |
| State | Published - Mar 2000 |
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering