Abstract
The paper presents a finite element study designed to gain physical insight into the effect of surface discontinuities on Rayleigh wave propagation in structural elements. In particular, a series of array measurements at various locations within a plate are simulated and compared with experimental measurements. Conversion of array measurements into the frequency-wavenumber domain reveals propagating Lamb modes, which are used to define Rayleigh wave motion. Numerical results show that Rayleigh waves measured after passing a fracture are composed of long wavelength Rayleigh wave energy propagating past the slot and short wavelength Rayleigh wave energy formed behind the slot.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 39-52 |
| Number of pages | 14 |
| Journal | Journal of Nondestructive Evaluation |
| Volume | 22 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jun 2003 |
| Externally published | Yes |
Keywords
- Defect dimension
- Finite elements
- Lamb waves
- Mode shapes
- Plates
- Rayleigh waves
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering