Abstract
Changes in amplitude and phase shifts in plane elastic waves were theoretically estimated when they propagated through an elastic body containing cylindrical inclusions. Based on the integral equation suggested by Lavrov et al., these changes were calculated in the case when only one cylindrical inclusion was located in the body and the propagating waves have a single frequency. These calculations were expanded to more practical case when multiple cylindrical inclusions aligned in the body and the waves have some frequency band. The changes in amplitude and phase shifts calculated were associated to the changes in apparent sonic velocity and attenuation coefficient due to a structural change in the material. This theoretical approach contributes to a quantitative damage evaluation based upon structural changes in various materials by measuring the acoustical parameters such as apparent sonic velocity and attenuation coefficient.
| Original language | English |
|---|---|
| Pages (from-to) | 29-40 |
| Number of pages | 12 |
| Journal | Journal of Nondestructive Evaluation |
| Volume | 30 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Mar 2011 |
| Externally published | Yes |
Keywords
- Apparent sonic velocity
- Attenuation coefficient
- Damage evaluation
- Fourier transform
- Ultrasonic waves
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering