Determining the acoustoelastic effect of longitudinal waves propagating inclined to principal stress directions in concrete: theory and experimental validation

IF 4.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Ndt & E International Pub Date : 2025-08-12 DOI:10.1016/j.ndteint.2025.103519

Hao Cheng , Katrin Löer , Max A.N. Hendriks , Yuguang Yang

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Abstract

The concept of acoustoelasticity pertains to changes in elastic wave velocity within a medium when subjected to initial stresses. However, existing acoustoelastic expressions are predominantly developed for waves propagating parallel or perpendicular to the principal stress directions. This paper presents a study on the acoustoelastic effect of longitudinal waves propagating inclined to the principal stress directions in concrete. The acoustoelastic effect for such longitudinal waves can be expressed using acoustoelastic parameters derived from waves propagating parallel and perpendicular to the uniaxial principal stress direction. To validate our theoretical statement, experiments were conducted on a concrete cylinder subjected to uniaxial stress. Despite slight fluctuations in the experimental observations, the overall trend of acoustoelastic effects for inclined propagating longitudinal waves aligns with the theory. This proposed theory holds potential for monitoring changes in the magnitudes and directions of principal stresses in the plane stress state.

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确定纵波在混凝土中向主应力方向倾斜传播的声弹性效应：理论与实验验证

声弹性的概念涉及到在介质中受到初始应力时弹性波速的变化。然而，现有的声弹性表达式主要是针对平行或垂直于主应力方向的波传播而开发的。本文研究了纵波在混凝土中沿主应力方向传播时的声弹性效应。这种纵波的声弹性效应可以用平行和垂直于单轴主应力方向传播的波的声弹性参数来表示。为了验证我们的理论陈述，在混凝土圆柱体上进行了单轴应力试验。尽管实验观测结果略有波动，但倾斜传播纵波的声弹性效应的总体趋势与理论一致。这一提出的理论具有监测平面应力状态下主应力的大小和方向变化的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ndt & E International 工程技术-材料科学：表征与测试

CiteScore

7.20

自引率

9.50%

发文量

121

审稿时长

55 days

期刊介绍： NDT&E international publishes peer-reviewed results of original research and development in all categories of the fields of nondestructive testing and evaluation including ultrasonics, electromagnetics, radiography, optical and thermal methods. In addition to traditional NDE topics, the emerging technology area of inspection of civil structures and materials is also emphasized. The journal publishes original papers on research and development of new inspection techniques and methods, as well as on novel and innovative applications of established methods. Papers on NDE sensors and their applications both for inspection and process control, as well as papers describing novel NDE systems for structural health monitoring and their performance in industrial settings are also considered. Other regular features include international news, new equipment and a calendar of forthcoming worldwide meetings. This journal is listed in Current Contents.