Abstract
This paper describes development of an impact detection system by using the anisotropy of output voltage of metal-core piezoelectric fiber/aluminum composite. A metal-core piezoelectric ceramic fiber is very fragile and reactive with molten aluminum. Therefore general fabrication processes such as dimision bonding and casting are hard to be applied. However, embedding the metal-core piezoelectric fiber into an aluminum matrix was succeeded by using IF/B method. Furthermore, output voltage characteristics of fabricated composite were evaluated, and anisotropy of the output voltage was observed. In this study, impact location and energy detection system was developed by using anisotropy of output voltage of the composite. It is expected to reduce the number of sensors compared to conventional systems and keep accuracy by using this anisotropy. As the results, the impact energy and impact location detection was successfully by using the model of the output voltage of the composites and signals that were obtained from composites disposed in two different positions. In addition, the error of impact location was 8.88 mm at the maximum, and this result is caused by the anisotropy of output voltage of metal-core piezoelectric fiber/aluminum composite.
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