Sensor Characteristics of CFRP Unidirectional Laminates

LUO Xinyi; LI Shunlin; WANG Kaikun; XIONG Ke; ZHU Xiaorong

doi:10.13374/j.issn1001-053x.2002.06.015

Volume 24 Issue 6

Aug. 2021

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LUO Xinyi, LI Shunlin, WANG Kaikun, XIONG Ke, ZHU Xiaorong. Sensor Characteristics of CFRP Unidirectional Laminates[J]. Chinese Journal of Engineering, 2002, 24(6): 638-642. doi: 10.13374/j.issn1001-053x.2002.06.015

Citation:

LUO Xinyi, LI Shunlin, WANG Kaikun, XIONG Ke, ZHU Xiaorong. Sensor Characteristics of CFRP Unidirectional Laminates[J]. Chinese Journal of Engineering, 2002, 24(6): 638-642. doi: 10.13374/j.issn1001-053x.2002.06.015

Citation:

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Sensor Characteristics of CFRP Unidirectional Laminates

doi: 10.13374/j.issn1001-053x.2002.06.015

1. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. Material Science and Engineering School, UST Beijing, Beijing 100083, China;
3. The Aeronautical Science Key Laboratory, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received Date: 2001-12-28
Available Online: 2021-08-26

Abstract

Abstract

The sensor characteristics of CFRP unidirectional laminates were studied by measuring the resistance changes while tension or cyclic tension was applied. The results show that the characteristics of resistance change are different at different ply angles. These characteristics can reflect more information than stress and strain. It is found that CFRP unidirectional laminates have piezoresistive effect. With an increase in stress,the piezoresistive effect increases. The piezoresistive effect of off-axis and 90° CFRP laminates is strongerthan that of 0° CFRP laminate and with the increase of the ply angle the piezoresistive effect increases. By useof the characteristics of resistance change, the CFRP unidirectional laminate can be inspected in-situ and the damage can be diagnosed by itself.
- carbon fiber composite,
- piezoresistive effect,
- off-axis