玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (9): 46-51.

• 应用研究 • 上一篇    下一篇

基于碳纤维材料力阻效应的传感器工程应用初探

黄俊捷,刘荣桂,许兆辉,谢桂华   

  1. 江苏大学土木工程与力学学院,镇江212013
  • 收稿日期:2017-04-28 出版日期:2017-09-28 发布日期:2017-09-28
  • 作者简介:黄俊捷(1990-),男,硕士,主要从事复合材料方面的研究。
  • 基金资助:
    国家自然科学基金项目(51478209);国家自然科学基金青年基金(51508235);江苏省科技厅基金(BK20140553)

STUDY ON THE ENGINEERING APPLICATION OF THE SENSOR BASED ON THE PIEZO-RESISTANCE EFFECT OF CFRP

HUANG Jun-jie, LIU Rong-gui, XU Zhao-hui, XIE Gui-hua   

  1. Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China
  • Received:2017-04-28 Online:2017-09-28 Published:2017-09-28

摘要: 碳纤维复合材料(CFRP)的力阻特性已经在实验和理论上获得了较多的探索与验证。将碳纤维与改进配方的基体制成新型的CFRP传感材料,并对其力阻特性进行测试,验证了CFRP作为传感器的可行性,这也是CFRP成为集成承载特性和传感特性的智能材料所必备的条件。然而在实际工程中,承载材料的受力情况远比拉伸试验复杂,因此设计了一项实验,将CFRP传感材料布置于梁内的受拉区,最大限度地模拟受力筋的实际受力情况,测试了CFRP传感材料在实际工程的复杂受力情况下,对荷载、裂缝等结构状态信息的反馈情况。实验结果表明,CFRP传感材料能够较为直观地反映以上结构信息。

关键词: CFRP, 力阻特性, 工程应用, 结构监测

Abstract: The piezo-resistance effect of Carbon Fiber Reinforced Plastic (CFRP) has been explored and verified in both experimental and theoretical fields. The new CFRP sensing material made by improving the formula of the epoxy resin matrix, which was tested by its piezo-resistance effect, has been proved feasible as the sensor. However, in the practical engineering, the stress condition of the load-bearing material is much more complicated than the tensile test. In this paper, we have designed an experiment by putting the CFRP sensing material at the tensile zone of the beam, which could simulate the practical stress condition of the steel at the maximum degree. We found out that in the practical application, the CFRP sensing material could well and intuitively reflect the information of the structure such as the load, crack and other state situations. The CFRP sensing material show a good linear relationship between the out load of the beam and the resistance, which is the basic feasibility of the smart material with both load-bearing and sensing characteristic. The sensitivity of CFRP is smaller than it in the tensile test but is enough to measure and could be improved in the further process. Especially, in the low loading stage, the CFRP could reflect the load of the beam well by the piezo-resistance effect, which means the sensor is quite practical.

Key words: CFRP, piezo-resistance effect, engineering application, structure monitor

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