Abstract
The concept of acoustoelasticity pertains to changes in elastic wave velocity within a medium when subjected to initial stresses. However, existing acoustoelastic expressions are predominantly developed for waves propagating parallel or perpendicular to the principal stress directions. This paper presents a study on the acoustoelastic effect of longitudinal waves propagating inclined to the principal stress directions in concrete. The acoustoelastic effect for such longitudinal waves can be expressed using acoustoelastic parameters derived from waves propagating parallel and perpendicular to the uniaxial principal stress direction. To validate our theoretical statement, experiments were conducted on a concrete cylinder subjected to uniaxial stress. Despite slight fluctuations in the experimental observations, the overall trend of acoustoelastic effects for inclined propagating longitudinal waves aligns with the theory. This proposed theory holds potential for monitoring changes in the magnitudes and directions of principal stresses in the plane stress state.
| Original language | English |
|---|---|
| Article number | 103519 |
| Number of pages | 13 |
| Journal | NDT and E International |
| Volume | 157 |
| DOIs | |
| Publication status | Published - 2025 |
Bibliographical note
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Keywords
- Acoustoelasticity
- Bulk wave
- Concrete
- Longitudinal wave velocity
- Plane stress state