气候变化领域集成服务门户(CCPortal): Illumination of Damage in Intact Rocks by Ultrasonic Transmission-Reflection and Digital Image Correlation

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DOI	10.1029/2020JB019526
	Illumination of Damage in Intact Rocks by Ultrasonic Transmission-Reflection and Digital Image Correlation
	Shirole D.; Hedayat A.; Walton G.
发表日期	2020
ISSN	21699313
卷号	125 期号:7
英文摘要	Laboratory-scale experiments on intact rocks are critical to the development of physics-based fundamental understanding of various geophysical phenomena. In this work, the capability of ultrasonic wave transmission (T-mode) and reflection (R-mode) to monitor damage progression in uniaxially loaded prismatic intact rock specimens has been analyzed, as it is imperative to study the observations and document the capabilities of these techniques in a controlled environment. This study is novel in the sense that the R-mode linear ultrasonic testing (LUT) has been rarely employed in studying intact rock damage processes in a laboratory setting, with most of the studies utilizing a direct transmission (T-mode) approach or focusing on macroscopically fractured material. The two-dimensional digital image correlation (2-D DIC) full-field strain measurement approach was also used in-sync with the LUT monitoring to explicitly correlate the stress-induced damage in the specimens with the changes observed in the ultrasonic (T-mode and R-mode) signals. The results show that both the T-mode and R-mode LUT approaches are sensitive to detect the evolution of tensile and shear damage in the specimens, with the R-mode ultrasonic signals showing higher degree of sensitivity to the damage in the rocks, immediately following the initiation of damage in the rock volume. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	2-D digital image correlation; strain-based damage assessment; ultrasonic reflection; ultrasonic transmission
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187768
作者单位	Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, United States; Department of Geology and Geological Engineering, Colorado School of Mines, Golden, CO, United States
推荐引用方式 GB/T 7714	Shirole D.,Hedayat A.,Walton G.. Illumination of Damage in Intact Rocks by Ultrasonic Transmission-Reflection and Digital Image Correlation[J],2020,125(7).
APA	Shirole D.,Hedayat A.,&Walton G..(2020).Illumination of Damage in Intact Rocks by Ultrasonic Transmission-Reflection and Digital Image Correlation.Journal of Geophysical Research: Solid Earth,125(7).
MLA	Shirole D.,et al."Illumination of Damage in Intact Rocks by Ultrasonic Transmission-Reflection and Digital Image Correlation".Journal of Geophysical Research: Solid Earth 125.7(2020).