碳纖維復合材料單向層合板自傳感特性

駱心怡; 李順林; 王開坤; 熊克; 朱曉榮

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

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驗證碼

碳纖維復合材料單向層合板自傳感特性

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

1. 南京航空航天大學材料科學與技術學院, 南京 210016;
2. 北京科技大學材料科學與工程學院, 北京 100083;
3. 南京航空航天大學智能材料結構航空科技重點實驗室, 南京 210016

基金項目:

國家自然科學基金重點資助項目(No.50135030)

詳細信息

作者簡介:
駱心怡女,37歲,講師,博士

中圖分類號: TB332
計量
- 文章訪問數: 141
- HTML全文瀏覽量: 16
- PDF下載量: 5
- 被引次數: 0
出版歷程
- 收稿日期: 2001-12-28
- 網絡出版日期: 2021-08-26

Sensor Characteristics of CFRP Unidirectional Laminates

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

摘要

摘要: 通過測試碳纖維/環氧復合材料(CFRP單向層合板單軸拉伸和循環拉伸時的電阻變化,研究了碳纖維復合材料單向層合板自傳感特性.結果表明:不同鋪層方向CFRP單向層合板拉伸時體積電阻變化特性各不相同,該電阻變化特性比應力、應變能更多地反映有關材料內部結構變化的信息;CFRP單向層合板具有壓阻效應,壓阻效應隨著應力的增加而增加,偏軸拉伸、橫向拉伸時壓阻效應比縱向拉伸時要大,且隨鋪層方向角的增大,壓阻效應越來越明顯.利用CFRP單向層合板這種自傳感特性,可實現在線實時自監測以及對其損傷、破壞的自診斷.
- 碳纖維復合材料 /
- 壓阻效應 /
- 偏軸
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