炭纤维增强混凝土构件的内部缺陷红外热像技术检测
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摘要
本文首次提出在炭纤维增强混凝土构件中埋设电热单元，对构件进行加热，借助红外热像技术检测增强层与混凝土基体界面层缺陷的方法。对混凝土表面的预制孔洞进行了红外检测，准确测定了缺陷的尺寸，确定了检测条件，分析了本方法检测缺陷的机理。
A novel non－ destructive testing technique by infrared thermography for carbon fiber－ reinforced plate strengthened concrete (CFRC) with embedded－ heat sources has been brought forward for the first time. The prefabricated holes located in the concrete have been tested with infrared thermography. The sizes of the holes have been exactly measured, and the NDT conditions have been gotten. The testing mechanism of the technique has been analyzed, too.
A novel non－ destructive testing technique by infrared thermography for carbon fiber－ reinforced plate strengthened concrete (CFRC) with embedded－ heat sources has been brought forward for the first time. The prefabricated holes located in the concrete have been tested with infrared thermography. The sizes of the holes have been exactly measured, and the NDT conditions have been gotten. The testing mechanism of the technique has been analyzed, too.
引文
[1]汪长安,黄勇,孙哲峰,伍章健,徐千军.单向炭纤维布用于混凝土受弯构件的加固和修复[J].建筑材料学报,1999,2(2):171～175.
[2] ASAKURA T, et al. Behavior of structure defective tunnel lining and effectiveness of inner reinforcement[J]. J.Of Geotechnical Engineering, No. 493/III27, 1994: 89～ 98.
[3] ZHI-SHEN WU. Research trends on retrofitting and strengthening concrete structure by FRP sheets and plates. In: Proc. of the Int. Conf. on Fiber Reinforced Concrete. Guangzhou, China: ACI Committee, 1997. 9～ 20.
[4] BALLINGER C A. Development of composites for civil engineering. Advanced Composites Materials in Civil Engi neering Structure, ASCE, Las Vegas, Navada, 1992: 288～ 301.
[5]张维力,和丕训,李春荣.红外诊断技术.北京:水利电力出版社,1991.
[6]曾令可,吴卫生.复合材料的红外无损检测[J].激光与红外,1996,26(2):80～84.
[7]宗明成,等.脉冲加热电视热成像无损检测系统.第3届无损检测新技术年会论文集,苏州:1996.10.
[8] MUTO N. YANAGIDA H et al. Foreseeing of fracture in CFGFRP composites by the measurement of residual change in electrical resistance, J. Ceram. Soc. Japan, 1992, 100 (4): 585 ～ 588.
[9]邸小坛,周燕.旧建筑物的检测加固与维修[M],北京:地震出版社,1991.
[10]RTL艾仑,SC爱德华兹.混凝土建筑修补[M],北京:水利电力出版社,1992.
[2] ASAKURA T, et al. Behavior of structure defective tunnel lining and effectiveness of inner reinforcement[J]. J.Of Geotechnical Engineering, No. 493/III27, 1994: 89～ 98.
[3] ZHI-SHEN WU. Research trends on retrofitting and strengthening concrete structure by FRP sheets and plates. In: Proc. of the Int. Conf. on Fiber Reinforced Concrete. Guangzhou, China: ACI Committee, 1997. 9～ 20.
[4] BALLINGER C A. Development of composites for civil engineering. Advanced Composites Materials in Civil Engi neering Structure, ASCE, Las Vegas, Navada, 1992: 288～ 301.
[5]张维力,和丕训,李春荣.红外诊断技术.北京:水利电力出版社,1991.
[6]曾令可,吴卫生.复合材料的红外无损检测[J].激光与红外,1996,26(2):80～84.
[7]宗明成,等.脉冲加热电视热成像无损检测系统.第3届无损检测新技术年会论文集,苏州:1996.10.
[8] MUTO N. YANAGIDA H et al. Foreseeing of fracture in CFGFRP composites by the measurement of residual change in electrical resistance, J. Ceram. Soc. Japan, 1992, 100 (4): 585 ～ 588.
[9]邸小坛,周燕.旧建筑物的检测加固与维修[M],北京:地震出版社,1991.
[10]RTL艾仑,SC爱德华兹.混凝土建筑修补[M],北京:水利电力出版社,1992.
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