Acoustic emission and 4D X-ray micro-tomography for monitoring crack propagation in rocks

IF 7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

International Journal of Rock Mechanics and Mining Sciences Pub Date : 2024-09-22 DOI:10.1016/j.ijrmms.2024.105917

Daniel Kytýř , Petr Koudelka , Daria Drozdenko , Martin Vavro , Tomáš Fíla , Václav Rada , Leona Vavro , Kristián Máthis , Kamil Souček

{"title":"Acoustic emission and 4D X-ray micro-tomography for monitoring crack propagation in rocks","authors":"Daniel Kytýř , Petr Koudelka , Daria Drozdenko , Martin Vavro , Tomáš Fíla , Václav Rada , Leona Vavro , Kristián Máthis , Kamil Souček","doi":"10.1016/j.ijrmms.2024.105917","DOIUrl":null,"url":null,"abstract":"<div><div>Acoustic emission (AE) and 4D X-ray computed tomography (4D XCT) were used simultaneously to study crack initiation and propagation in two different types of quartz-rich sandstones during the four-point bending experiments. Statistical analysis of the AE response indicated the failure mechanisms and their dynamics. The characteristic changes observed in the AE response defined the timing of the bending interruptions for XCT scanning to reveal the development of the crack. It was possible to quantitatively describe the developing cracks in their dimensions and volume and relate this information to the rate of decrease in the post-peak region of the material response. It could be concluded that the combination and concurrent use of AE and XCT techniques represents a highly effective and reliable instrument for observation, description, analysis of the crack propagation process, and rock disintegration in detail at a microscale level. With regard to the specific sandstones studied, Mšené sandstone is softer, respectively, less brittle, while Kocbeře sandstone is characterised by a more brittle behaviour accompanied by an AE signal with higher amplitudes compared to those of Mšené.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":null,"pages":null},"PeriodicalIF":7.0000,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S136516092400282X/pdfft?md5=ee99e274dc9f9e375fe497f889fc5e0f&pid=1-s2.0-S136516092400282X-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Rock Mechanics and Mining Sciences","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S136516092400282X","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Acoustic emission (AE) and 4D X-ray computed tomography (4D XCT) were used simultaneously to study crack initiation and propagation in two different types of quartz-rich sandstones during the four-point bending experiments. Statistical analysis of the AE response indicated the failure mechanisms and their dynamics. The characteristic changes observed in the AE response defined the timing of the bending interruptions for XCT scanning to reveal the development of the crack. It was possible to quantitatively describe the developing cracks in their dimensions and volume and relate this information to the rate of decrease in the post-peak region of the material response. It could be concluded that the combination and concurrent use of AE and XCT techniques represents a highly effective and reliable instrument for observation, description, analysis of the crack propagation process, and rock disintegration in detail at a microscale level. With regard to the specific sandstones studied, Mšené sandstone is softer, respectively, less brittle, while Kocbeře sandstone is characterised by a more brittle behaviour accompanied by an AE signal with higher amplitudes compared to those of Mšené.

查看原文本刊更多论文

用于监测岩石裂缝扩展的声发射和 4D X 射线微断层扫描技术

在四点弯曲实验中，同时使用声发射（AE）和四维 X 射线计算机断层扫描（4D XCT）来研究两种不同类型富含石英的砂岩中裂纹的产生和扩展。对 AE 响应的统计分析显示了破坏机制及其动态变化。在 AE 响应中观察到的特征变化确定了 XCT 扫描显示裂纹发展的弯曲中断时间。可以定量描述裂纹发展的尺寸和体积，并将这些信息与材料响应峰值后区域的下降率联系起来。可以得出结论，AE 和 XCT 技术的结合和同时使用是一种非常有效和可靠的仪器，可用于观察、描述和分析裂纹扩展过程，以及岩石在微观层面上的详细崩解情况。就所研究的特定砂岩而言，Mšené 砂岩较软，脆性较低，而 Kocbeře 砂岩的特点是脆性较高，与 Mšené 砂岩相比，AE 信号的振幅较高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Rock Mechanics and Mining Sciences 工程技术-工程：地质

CiteScore

14.00

自引率

5.60%

发文量

196

审稿时长

18 weeks

期刊介绍： The International Journal of Rock Mechanics and Mining Sciences focuses on original research, new developments, site measurements, and case studies within the fields of rock mechanics and rock engineering. Serving as an international platform, it showcases high-quality papers addressing rock mechanics and the application of its principles and techniques in mining and civil engineering projects situated on or within rock masses. These projects encompass a wide range, including slopes, open-pit mines, quarries, shafts, tunnels, caverns, underground mines, metro systems, dams, hydro-electric stations, geothermal energy, petroleum engineering, and radioactive waste disposal. The journal welcomes submissions on various topics, with particular interest in theoretical advancements, analytical and numerical methods, rock testing, site investigation, and case studies.