Modeling of Ultrasonic Nonlinearities for Debris Cloud-Induced Micro-Voids Characterization: Theoretical Analysis and Numerical Validation
| Autor: | Baojun Pang, Wuxiong Cao, Zhongqing Su, Yuan Cai, Runqiang Chi, Ye-fei Huang |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Computer simulation Acoustics 02 engineering and technology 021001 nanoscience & nanotechnology Debris Characterization (materials science) Harmonic analysis Nonlinear system 020303 mechanical engineering & transports 0203 mechanical engineering Hypervelocity Ultrasonic sensor 0210 nano-technology Dispersion (water waves) |
| Zdroj: | 2019 13th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA). |
| DOI: | 10.1109/spawda.2019.8681862 |
| Popis: | Micro-damage, from dimples through micro-voids to micro-cracks, are formed underneath the pitting damage due to the debris cloud hypervelocity impact (HVI). Evaluation of this specific type of micro-damage is far beyond the detectability of conventional approaches using guided ultrasonic waves (GUWs), because the large number of micro-voids in the pitting damage region cause highly complex. Targeting the quantitative characterization of these micro-voids, an analytical model is developed to interpret the generation of high-order modes when a GUW traversing from the perspective of linear and nonlinear GUW features. Validation of this theoretical analysis is ascertained via numerical simulation. On this basis, an evaluation framework is developed whereby the micro-voids can be quantitatively depicted. |
| Databáze: | OpenAIRE |
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