Mechanical Properties of Metasandstone under Uniaxial Graded Cyclic Loading and Unloading
Source abstract
Abstract
The acoustic emission and wave velocity characteristics of metasandstone under graded cyclic loading and unloading were revealed by conducting graded cyclic loading and unloading tests. The results show that the acoustic emission signals of metasandstone samples are mainly generated in the loading phase, and almost no acoustic emission activity is generated in the unloading phase. The quiet period feature can be used to monitor and predict the destabilization of metasandstone. There is a stress threshold for wave velocity variation in metasandstone, below which wave velocity does not change significantly with increasing stress. When the stress exceeds this threshold, the wave velocity of the rock sample will decrease rapidly with the increase in stress. The phenomenon of a rapid decrease in wave velocity can be used to predict the damage instability of rock masses in engineering.
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Research context
OpenAlex topics: Rock Mechanics and Modeling · Geotechnical and Geomechanical Engineering · Drilling and Well Engineering
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Funding
Initiation fund for postdoctoral research of Central South University
References (24)
Show source-provided references
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