STUDY OF CONCRETE'S BEHAVIOR UNDER 4-POINT BENDING LOAD USING CODA WAVE INTERFEROMETRY (CWI) ANALYSIS

被引：4

作者：

Zhang, Y. ^{[1
]}

Abraham, O. ^{[1
]}

Chapeleau, X. ^{[1
]}

Cottineau, L-M ^{[1
]}

Tournat, V. ^{[2
]}

Le Duff, A. ^{[2
,3
]}

Lascoup, B. ^{[4
]}

Durand, O. ^{[1
]}

机构：

[1] LUNAM Univ, IFSTTAR, MACS, Route Bouaye,CS4, F-44344 Bouguenais, France

[2] Univ Maine, LUNAM Univ, CNRS UMR 6613, F-72085 Le Mans 9, France

[3] Grp ESEO, F-90717 Angers 2, France

[4] ESTACA, F-53061 Laval, France

来源：

REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 32A AND 32B | 2013年 / 1511卷

关键词：

Coda Wave Interferometry; Four-point bending; Acoustoelasticity and Temperature-compensation; VELOCITY VARIATION;

D O I：

10.1063/1.4789075

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Coda Wave Interferometry (CWI) is an ultrasonic NDT method suitable for complex material such as concrete that can precisely measure small propagation velocity variation (10(-2)%). By measuring variation of propagation velocity in concrete caused by acoustoelasticity phenomena, CWI analysis can be used to monitor concrete's internal stress level. For the first time, CWI is used to measure propagation velocity variations due to a stress field in a concrete beam under four-points bending test, which contains simultaneously compressive and tensile stress. Embedded optical-fiber sensors, strain gauges are used in the experiment, in order to confirm and validate the CWI analysis result. Thermocouples are also embedded into concrete beams for monitoring internal temperature fluctuations.

引用

页码：398 / 404

页数：7

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