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Estimation of Stresses in Concrete by Using Coda Wave Interferometry to Establish an Acoustoelastic Modulus Database

机译:用CEDA波干涉法估计混凝土中的应力以建立声弹性模量数据库

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摘要

This article presents an experimental study of estimating stresses in concrete by applications of coda wave interferometry to establish an acoustoelastic modulus database. Under well-controlled laboratory conditions, uniaxial load cycles were performed on three groups of 15 × 15 × 35-cm concrete prisms, with ultrasonic signals being collected continuously. Then, the coda wave interferometry technique, together with acoustoelastic and Kaiser theories, are utilized to analyze the stress-velocity relations for the distinct ranges before and after historical maximum loads, forming an acoustoelastic modulus database. When applied to different concrete samples, their stresses are estimated with a high degree of accuracy. This study could be used to promote the development of novel nondestructive techniques that aid in structural stress monitoring.
机译:本文介绍了CODA波干干涉法建立声弹性模量数据库混凝土中估算压力的实验研究。在受控的实验室条件下,在三组15×15×35cm的混凝土棱镜上进行单轴载荷循环,连续收集超声信号。然后,利用CODA波干涉测量技术与声弹性和kaiser理论一起用于分析历史最大负载前后独特范围的应力速度关系,形成声弹性模量数据库。当应用于不同的混凝土样本时,其应力以高精度估计。本研究可用于促进有助于结构应力监测的新型非破坏性技术的发展。

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