Effect of propagation distance on acoustic emission of carbon fiber/epoxy composites
Autor(en): |
Doyun Jung
Byoung-Sun Lee Woong-Ryeol Yu Wonjin Na |
---|---|
Medium: | Fachartikel |
Sprache(n): | Englisch |
Veröffentlicht in: | Structural Health Monitoring, Februar 2021, n. 6, v. 20 |
Seite(n): | 147592172098615 |
DOI: | 10.1177/1475921720986156 |
Abstrakt: |
This study examined the change in acoustic emission as a function of measurement position of fiber-reinforced composites. Single-edge-notched carbon fiber/epoxy composites were prepared and tested under cyclic loading, with sensors located at specific distances from the end of the notch. Although the I b-value increased overall, the degree of increase significantly varied with position and acoustic emission frequency. Notably, the proportion of acoustic emission signals for each failure mode varied due to a high attenuation rate at high frequencies, which increased the I b-value. Accordingly, the high-frequency fiber-failure signals significantly affected the I b-value. This study focused on the importance of analyzing acoustic emission signals by considering the crack location and frequency-dependent attenuation rate. We concluded that an acoustic emission sensor should be located 20–40 mm from the crack location for woven carbon fiber/epoxy composites. |
- Über diese
Datenseite - Reference-ID
10562576 - Veröffentlicht am:
11.02.2021 - Geändert am:
29.11.2021