[1]田玉滨 莫青城 杜文森 马云飞 陈再现.基于非线性超声技术损伤钢筋混凝土无损检测的适用性研究[J].西安建筑科技大学学报(自然科学版),2017,49(02):192-199.[doi:10.15986/j.1003-7930.2017.02.006]
　TIAN YubinMO Qingcheng.DU WenmiaoMA Yunfei,CHEN Zaixian.Research of applicability of non-destructive testing for damaged reinforced concrete basing on nonlinear ultrasonic technology[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2017,49(02):192-199.[doi:10.15986/j.1003-7930.2017.02.006]
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基于非线性超声技术损伤钢筋混凝土无损检测的适用性研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
49
期数:
2017年02期
页码:
192-199
栏目:
出版日期:
2017-04-28

文章信息/Info

Title:
Research of applicability of non-destructive testing for damaged reinforced concrete basing on nonlinear ultrasonic technology
文章编号:
1006-7930(2017)02-0192-08
作者:
田玉滨1; 2 莫青城1; 2 杜文森1; 2 马云飞1; 2 陈再现3
(1. 哈尔滨工业大学,结构工程灾变与控制教育部重点实验室,哈尔滨 150090; 2. 哈尔滨工业大学,土木工程学院,哈尔滨 150090; 哈尔滨工业大学(威海)
Author(s):
TIAN Yubin1; 2MO Qingcheng1.2DU Wenmiao1; 2MA Yunfei1; 2;  CHEN Zaixian3
(1.Key Lab of Structures Dynamics Behavior and Control (Harbin Institute of Technology), Ministry of Education, Harbin 150090, China; School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; Department of Civil EngineeringHarbin Institute of Technology at WeihaiWeihai 264200China)
关键词:
非线性超声技术; 发射电压; 二次谐波; 非线性系数; 无损检测; 锈蚀钢筋混凝土
Keywords:
nonlinear ultrasonic technology; Emitter voltage; second harmonic; nonlinear coefficientsthe;  NDT;  Corroded RC
分类号:
TU398
DOI:
10.15986/j.1003-7930.2017.02.006
文献标志码:
A
摘要:
以27个钢筋混凝土试件拉拔试验和1个立方体试块分级加载试验为基础，利用ZBL-U520非金属超声检测仪对试件进行无损检测，分析了接收器频率、发射电压对激发二次谐波的影响，以确定仪器最佳设置参数。在此基础上利用非线性超声技术，对不同荷载水平下的试件损伤进行了无损检测，研究了考虑锈蚀率以及荷载损伤的二次谐波和非线性系数变化关系，验证了非线性超声技术在钢筋混凝土无损检测中的适用性。结果表明：接收换能器频率为发射换能器2倍时，激发二次谐波效果更佳；对比不同发射电压（65 V、125 V、250 V、500 V、1 000 V随着试件锈蚀率和拉拔力增加，二次谐波幅值和非线性系数呈非线性变大趋势；配箍率和保护层厚度增加，试件二次谐波和非线性系数增加缓慢，反之二次谐波和非线性系数增加较快。试验分析表明：利用非线性超声技术对钢筋混凝土检测得到的非线性超声特征参数去表征试件损伤程度是较为准确和合适的。
Abstract:
Based on the test results of 27 RC pullout test specimens and a cube block of step loading, the specimens with ZBL-U520 non-metallic ultrasonic detector was non-destructive tested, the effects that the second harmonic was excited by receiver frequency and transmitter voltage were analyzed so that determine suitable test parameters. On the basis of the analysis, the specimens of different corrosion rates with Nonlinear ultrasonic technology were non-destructive tested and Not corroded specimens graded injury were non-destructive tested under Pull-out test ，the relationship of nonlinear ultrasonic characteristic parameters (the second harmonic and nonlinear coefficients) and different corrosion rates, different load damage were studied, applicability of nonlinear ultrasonic technology applied RC Non-destructive testing was verified. The results show that the receiving transducer frequency equals the transmitting transducer 2 times more excite the second harmonic; Comparing the spectrums of different voltage (65 V, 125 V, 250 V, 500 V, 1000 V), it can be found that with the increase of transmitting voltage, the amplitude of the second harmonic also increases . So emitter voltage is positioned 1 000 V to obtain more accurate Nonlinear ultrasonic characteristic parameters within the limits permitted by the instrument. The Second harmonic amplitude and nonlinear coefficient increases nonlinearly with increase of corrosion rating and Pulling force, the second harmonic amplitude and nonlinear coefficients of the specimens were Increased slowly under Higher stirrup ratio and Thicker protective layer, in contrast, Increased rapidly, Tests showed that it’s accurate and suitable to characterize the damage degree of reinforced concrete by using Nonlinear ultrasonic technology to measure Nonlinear ultrasonic characteristic parameters

参考文献/References:

References
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备注/Memo

备注/Memo:
收稿日期：2016-06-25 ? ? 修改稿日期：2017-03-21
基金项目：国家自然科学基金项目（51678199）
作者简介：田玉滨（1972—），男，副教授，博士，主要从事结构实验技术、检测技术和土木工程结构整治技术. E-mail: tianyubin@hit.edu.cn
更新日期/Last Update: 2017-06-09