Anti-symmetric flexural modes propagating along a wedge tip with a defect
| Autor: | Yu-Hong Chen, Che-Hua Yang, Tai-Chieh Wu |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
business.product_category
Materials science Condensed matter physics business.industry Computer Science::Software Engineering Acoustic wave Wedge (mechanical device) Finite element method Wavelength Optics Flexural strength Reflection (physics) Transmission coefficient Reflection coefficient business |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.917423 |
| Popis: | Antisymmetric flexural (ASF) modes are guided acoustic waves propagating along a wedge-shaped wave guide with their energy tightly confined near the tip. Motivated by the potential application of employing ASF modes in inspecting defects in machine tool blades with sharp edges, this study is focused in investigating the behaviors of ASF modes propagating along the wedge tips with defect. More specifically, we investigate the quantitative behaviors of ASF reflection and transmission while the ASF modes interact with a defect along a wedge tip. This investigation includes numerical simulations with finite element analysis and experimental measurements with a laser ultrasound technique. Defect parameters including depth and width are discussed regarding to their influences on the reflection coefficient (RC) and transmission coefficient (TC). The RC is found to increase as the ratio between the defect depth and the ASF wavelength increases, while the TC decreases. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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