SP2.4 - Real-Time Monitoring of Cracks in Carbon Fiber-reinforced Polymers under Bending Vibrations with Piezoelectric Composite Sensors
- Event
- EUROSENSORS XXXVII
2025-09-07 - 2025-09-10
Wroclaw - Band
- Lectures
- Chapter
- Special Session: INTAKE 2
- Author(s)
- Y. Sueda, Z. Wang, H. Kurita, F. Narita - Tohoku University, Sendai (Japan), Y. Watanabe, H. Sato, R. Ohiwa - Nikkiso Co., Ltd., Tokyo (Japan)
- Pages
- 36 - 37
- DOI
- 10.5162/EUROSENSORS2025/SP2.4
- ISBN
- 978-3-910600-07-2
- Price
- free
Abstract
Detecting defects in carbon fiber reinforced polymers (CFRP) used in aircraft is time-consuming and costly, increasing maintenance burdens and affecting safety. This study proposes a real-time crack de-tection method by laminating KNN-epoxy composite onto CFRP and analyzing its electrical response during bending vibration. Vibration tests revealed that cracks cause a decrease in resonance frequency and output voltage, while rectified AC voltage stored in a capacitor enabled wireless transmission for crack detection via time delay, demonstrating the system’s potential for real-time CFRP monitoring to improve safety and efficiency.