Abstract
The application of polyvinylidene fluoride (PVDF) film as an acoustic emission (AE) sensor appears to be very practical. A commercially available PVDF film sensor was employed to detect AE due to fatigue crack growth in the single-lap joints of graphite/epoxy laminates. Although the signal-to-noise ratio is not as high as those measured by PZT sensors, the result showed that the location of crack front could be predicted by the linear location of AE signals detected by the PVDF sensors. Since the composite materials usually produce very energetic AE signals, the extremely cost-effective form of PVDF film sensors can be permanently mounted on composite structures for structural health monitoring as disposable ones. The film sensors are expected to be eventually embedded in composite structures provided the current limit of use temperature can be increased.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1929-1934 |
| Number of pages | 6 |
| Journal | Key Engineering Materials |
| Volume | 270-273 |
| Issue number | III |
| State | Published - 2004 |
| Event | Proceedings of the 11th Asian Pacific Conference on Nondestructive Testing - Jeju Island, Korea, Republic of Duration: Nov 3 2003 → Nov 7 2003 |
Keywords
- Composites
- Embedded AE sensor
- Joints
- PVDF
- Structural health monitoring
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering