Application of Ultrasonic Spectroscopy for Hydrolytic Damage Detection in GRFC: Correlations with Mechanical Tests and Microscopic Observations
| Autor: | D. Zellouf, R. Gaertner, Philippe Guy, R. Vassoille, Y. Jayet |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Damage detection
Materials science business.industry Mechanical Engineering Attenuation 02 engineering and technology 021001 nanoscience & nanotechnology Microstructure Viscoelasticity 020303 mechanical engineering & transports 0203 mechanical engineering Ultrasonic spectroscopy Mechanics of Materials Nondestructive testing Dispersion (optics) Materials Chemistry Ceramics and Composites Ultrasonic sensor Composite material 0210 nano-technology business |
| Zdroj: | Journal of Composite Materials. 34:1356-1368 |
| ISSN: | 1530-793X 0021-9983 |
| Popis: | This study concerns the ability of ultrasonic waves to detect the damage caused to polymer composites during water immersion. The acoustical parameters such as velocity and attenuation are linked to the viscoelasticity and microstructure of the propagation medium. For ultrasonic propagation, composite materials are dispersive, so their acoustical parameters are measured by means of pulsed ultrasonic spectroscopy. Model samples with certain properties are chosen in order to isolate the different damage mechanisms. In these conditions, the results of ultrasonic tests during hydrolytic aging allowed us to correlate the evolution of acoustical parameters to the damage level and nature. The ultrasonic results have been validated by complementary mechanical tests and microscopic observations carried out on the same samples. From these results, it is possible to implement a practical procedure allowing the damage quantitative evaluation from ultrasonic velocity and attenuation measurements. The damage mechanism is identified through a detailed analysis of the velocity and attenuation dispersion laws. |
| Databáze: | OpenAIRE |
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