| CFRP拉挤板材的力阻效应 |
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| 引用本文： | 郑华升,周梓棣,杜琰.CFRP拉挤板材的力阻效应[J].工程塑料应用,2017,45(4). |
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| 作者姓名： | 郑华升 周梓棣 杜琰 |
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| 作者单位： | 1. 冶金工业过程系统科学湖北省重点实验室,武汉 430081;武汉科技大学理学院,武汉 430081;2. 武汉科技大学理学院,武汉,430081 |
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| 基金项目： | 国家自然科学基金项目，湖北省自然科学基金项目 |
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| 摘 要： | 采用单向拉伸试验考察了碳纤维增强塑料(CFRP)拉挤板的电阻–应变响应规律。结果表明,纵向拉应变引起CFRP拉挤板纵向电阻的增大,其力阻效应的平均灵敏度为1.87,尺寸变化是其电阻变化的主要原因;CFRP拉挤板的力阻响应具有较好的线性,其非线性误差为±1.5%;循环加载过程中,CFRP拉挤板的力阻响应平稳,重复性误差为±4.3%;经过一个周期的加载–卸载试验后,CFRP拉挤板的电阻产生不可逆的增大,其迟滞误差为±4.8%。
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| 关 键 词： | CFRP拉挤板 力阻效应 加固结构 |
Piezoresistivity of Pultruded CFRP Plate |
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| Zheng Huasheng,Zhou Zidi,Du Yan.Piezoresistivity of Pultruded CFRP Plate[J].Engineering Plastics Application,2017,45(4). |
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| Authors: | Zheng Huasheng Zhou Zidi Du Yan |
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| Abstract: | Resistance-strain response of pultruded CFRP plate was studied by uniaxial tension test. The results reveal that the resistance of pultruded CFRP plate is increased by the tension strain with a average gauge factor of 1.87,and the resistance change is mainly due to the size effect. Good linearity is observed in the piezoresistive response with a nonlinearity error of ±1.5%. The pultruded CFRP plate exhibits stable piezoresistive response under cyclic loading with a non-repeatability error of ±4.3%. An irreversible increase in resistance is found after a load-unload test,and the hysteresis error is±4.8%. |
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| Keywords: | pultruded CFRP plate piezoresistivity strengthened structure |
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