介绍了适合混凝土结构局部压应力、压应变状态监测的嵌入式炭纤维水泥石压敏传感器的概念及其传感原理,并研究了环境温度和湿度两个因素对炭纤维水泥石压敏传感器零点输出的影响;同时从传感器电路设计角度探讨了温度、湿度的补偿方法及其在结构中的应用方式.研究表明:炭纤维水泥石压敏传感器的零点输出对环境温度、湿度的变化比较敏感,温度、湿度的最大影响分别约为6%和200%;对炭纤维水泥石压敏传感器采用"测试-补偿"对耦设置构成的补偿电路可以消除因环境温度、湿度以及极化作用产生的噪声信号对传感器零点输出的影响.
参考文献
[1] | Chung D D L.Cement-based electronics[J].Journal of Electroceramics,2001,6(1):75-88. |
[2] | Chung D D L.Cement reinforced with short carbon fibers:A multifunctional material[J].Composites Part B,2000,31(6/7):511-526. |
[3] | Shi Zengqiang,Chung D D L.Carbon fiber-reinforced concrete for traffic monitoring and weighing in motion[J].Cement and Concrete Research,1999,29(3):435-439. |
[4] | 郑立霞,宋显辉,李卓球.利用CFRC压敏性监测钢筋锈蚀的模拟试验研究[J].试验力学,2004,19(2):206-210.Zheng Lixia,Song Xianhui,Li Zhuoqiu.Corrosion monitoring of rebar by compression sensitivity of CFRC[J].Journal of Experimental Mechanics,2004,19(2):206-210. |
[5] | Wen Sihai,Chung D D L.Carbon fiber-reinforced cement as a strain-sensing coating[J].Cement and Concrete Research,2001,31(4):665-667. |
[6] | 郑立霞,宋显辉,李卓球.机敏混凝土结构变形的自诊断[J].华中科技大学学报,2004,32(4):30-31.Zheng Lixia,Song Xianhui,Li Zhuoqiu.Self-monitoring of the deformation in smart concrete structures[J].J Huazhong Univ of Sci and Tech:Nature Science Edition,2004,32 (4):30-31. |
[7] | 韩宝国.压敏炭纤维水泥石性能、传感器制品与结构[D].哈尔滨:哈尔滨工业大学,2005:1-21.Han Baoguo.Properties,sensors and structures of pressuresensitive carbon fiber cement paste[D].Harbin:Harbin Institute of Technology,2005:1-21. |
[8] | 韩宝国,关新春,欧进萍.纳米氧化钛与炭纤维水泥石的电阻率及压敏性[J].硅酸盐学报,2004,32(7):884-887.Han Baoguo,Guan Xinchun,Ou Jinping.Specific resistance and pressure sensitivity of cement paste admixing with nanoTiO2 and carbon fiber[J].Journal of the Chinese Ceramic Society,2004,32(7):884-887. |
[9] | 王玉林,赵晓华.炭纤维水泥基复合材料的正、负压敏性及其机理分析[J].复合材料学报,2005,22(4):40-46.Wang Yulin,Zhao Xiaohua.Positive and negative pressure sensitivities of carbon fiber-reinforced cement-matrix composites and their mechanism[J].Acta Materiae Compositae Sinica,2005,22(4):40-46. |
[10] | 韩宝国.炭纤维水泥基复合材料压敏性能的研究[D].哈尔滨:哈尔滨工业大学,2001:38-47.Han Baoguo.The research of stress sensitivity of carbon fiber cement composite[D].Harbin:Harbin Institute of Technology,2001:38-47. |
[11] | 孙宝元.传感器工程学[M].大连:大连工学院出版社,1998:53-55.Sun Baoyuan.Sensor engineering[M].Dalian:Dalian Institute of Technology Press,1998:53-55. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%