Effects of branched defect geometry on the propagation of Rayleigh waves
| Autor: | Rachel S. Edwards, B. Dutton, Francisco Hernandez-Valle, A. R. Clough |
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| Rok vydání: | 2014 |
| Předmět: |
Surface (mathematics)
Materials science business.industry chemistry.chemical_element 020206 networking & telecommunications Geometry 02 engineering and technology Laser law.invention Cracking symbols.namesake Optics chemistry law Position (vector) Aluminium 0202 electrical engineering electronic engineering information engineering symbols Reflection (physics) 020201 artificial intelligence & image processing Rayleigh wave Stress corrosion cracking business |
| Zdroj: | AIP Conference Proceedings |
| ISSN: | 0094-243X |
| DOI: | 10.1063/1.4864846 |
| Popis: | Rayleigh waves can be used for characterisation of surface-breaking defects, giving a measure of the depth and the angle of propagation of a defect with simple (i.e. single crack) geometry. However, surface breaking defects will often grow with a more complicated geometry. We present here results of experimental measurements using laser generated and detected Rayleigh waves on aluminium samples containing machined slots with varied branched geometries. The signal enhancement found in the near-field, and the reflection and transmission of different wavemodes can be used to position the defect and gain an idea of its geometry. This research can be applied to monitor components prone to developing stress corrosion cracking (branched-like defects). Results are shown of the near-field interactions of Rayleigh waves with this type of cracking in stainless steel pipe samples, in order to resolve the spatial extent and geometric alignment of those defects. |
| Databáze: | OpenAIRE |
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