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Infrared Radiation Characteristics During Crack Development in Water-Bearing Sandstone.
- Source :
-
Soil Mechanics & Foundation Engineering . Jul2021, Vol. 58 Issue 3, p209-214. 6p. - Publication Year :
- 2021
-
Abstract
- We studied the infrared radiation (IR) characteristics of sandstone cracks with different water contents. We propose a new IR-based method to distinguish the initial development and damage point of cracks. The maximum variation of IR variance shows a quadratic relationship with water content. By defining crack initiation and damage using a stiffness stress curve, it can be concluded that the crack initiation and crack damage IR variance thresholds show a quadratic relationship with water content. The proportion of the two thresholds at the maximum IR variation amplitude does not change with increasing water content, yielding ratios of 47.51% and 78.19% for crack initiation and crack damage, respectively. The rock stress threshold of crack initiation and damage show a negative logarithmic relationship with their respective IR variance thresholds with correlation coefficients above 0.90. [ABSTRACT FROM AUTHOR]
- Subjects :
- *INFRARED radiation
*SANDSTONE
*ROCK deformation
*STATISTICAL correlation
Subjects
Details
- Language :
- English
- ISSN :
- 00380741
- Volume :
- 58
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Soil Mechanics & Foundation Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 151935147
- Full Text :
- https://doi.org/10.1007/s11204-021-09730-2