Reference-free determination of debonding length in reinforced concrete beams using guided wave propagation

被引：24

作者：

Zima, Beata ^{[1
]}

Kedra, Rafal ^{[1
]}

机构：

[1] Gdansk Univ Technol, Fac Civil & Environm Engn, Dept Mech Mat & Struct, Ul Narutowicza 11-12, PL-80233 Gdansk, Poland

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 207卷

关键词：

Non-destructive testing; Guided wave propagation; Embedded bar; Debonding; Reinforced concrete; Damage detection; EMBEDDED PIEZOELECTRIC ELEMENTS; STEEL BARS; LAMB WAVES; DELAMINATION;

D O I：

10.1016/j.conbuildmat.2019.02.143

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents theoretical and experimental investigations of guided wave propagation in reinforced concrete beams, with pre-existing debonding between steel rebars and concrete blocks, for the purpose of damage detection. The primary aim of these investigations was a detailed analysis of the possible applications of wave propagation in single and multiple debonding detection in reinforced concrete structures and reference-free determination of their total length. Guided waves were excited and measured with the use of piezoelectric sensors in reinforced concrete beams with varying debonding lengths between steel rebars and concrete cover. The influence of damage on wave propagation velocity in both debonded and fully bonded rods was investigated. The effectiveness of the proposed debonding length determination method, which takes advantage of the fastest mode velocity in concrete specimen, was confirmed experimentally. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：291 / 303

页数：13

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