| Autor: |
Martin Schagerl, Markus Winklberger, Christoph Kralovec, Peter Heftberger |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Health Monitoring of Structural and Biological Systems XV. |
| DOI: |
10.1117/12.2583208 |
| Popis: |
Artificially introduced cracks in necked double shear lugs are monitored using piezoelectric transducers attached to the lug shaft and analyzed by the electro-mechanical impedance (EMI) method with a model-based approach. Numerical simulations with coupled-field finite element (FE) models are used to study the frequency response behavior of necked lugs. Through-cracks with lengths up to 3 mm are located at 90° to the lug axis, which is a critical spot for damage initiation. The shift of a selected resonance frequencies found by analytical and numerical calculations are used to estimate the crack length. Results of numerical FE simulations are validated with multiple experimental measurements . |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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