Coupled infrared radiation temperature and acoustic monitoring of damage characteristics on saturated red sandstone under uniaxial compression loading

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2025-06-06 DOI:10.1016/j.csite.2025.106472

Lu Chen , Shuaifeng Yin , En Wang , Hao Qi , Yanchao Hou , Xuhao Kang

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引用次数: 0

Abstract

Deep geotechnical engineering construction is influenced by groundwater. To explore the damage evolution mechanism and multi-physical response characteristics of rock with different water content, the infrared thermography and acoustic emission technology were used to monitor the red sandstone under uniaxial compression loading. The acoustic emission cumulative ringing count, damage variables, and infrared radiation temperature field data were synchronously acquired. A systematic analysis of the acoustic and infrared characteristics of water-saturated red sandstone during progressive failure was conducted. Additionally, based on Grubbs criteria, the GIRT and GIRTS indices were introduced to elucidate the temporal and spatial evolution of damage in different water-saturated rock samples. Furthermore, by integrating the acoustic emission damage and the infrared damage index using a random forest model, a comprehensive acoustic-thermal model was established to identify the mechanical response characteristics of water-saturated red sandstone. The R² coefficients exceed 0.95 for all samples, indicating high accuracy and reliability of the prediction model. This research uncovers multiple precursory indicators of red sandstone failure under water-rock coupling conditions, providing a foundation for rock stability monitoring and disaster warning through acoustic-infrared fusion technology.

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饱和红砂岩单轴压缩载荷下损伤特征的红外辐射温度与声耦合监测

深部岩土工程施工受到地下水的影响。为探索不同含水率岩石的损伤演化机制和多物理响应特征，采用红外热成像和声发射技术对单轴压缩加载下的红砂岩进行了监测。同步获取声发射累计振铃数、损伤变量和红外辐射温度场数据。系统分析了含水红砂岩在递进破坏过程中的声波和红外特征。此外，基于Grubbs准则，引入GIRT和GIRTS指标，阐明了不同含水岩石试样损伤的时空演化规律。在此基础上，利用随机森林模型对声发射损伤和红外损伤指数进行积分，建立了饱和水红砂岩力学响应特征的综合声热模型。所有样本的R2系数均超过0.95，表明预测模型具有较高的准确性和可靠性。本研究揭示了水岩耦合条件下红砂岩破坏的多个前兆指标，为利用声红外融合技术进行岩石稳定性监测和灾害预警提供了基础。

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

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.