Journal ArticleDOI
Stress memory of crystalline rocks in acoustic emission
Kei Kurita,Naoyuki Fujii +1 more
TLDR
In this article, a clear hysteresis of emission numbers related to the stress history (Kaiser effect) was observed below dilatancy onset stress, and the recovery process was over one month under room humidity and temperature conditions.Abstract:
In acoustic emission studies on granite under uniaxial compression, clear hysteresis of emission numbers related to the stress history (Kaiser effect) was observed below dilatancy onset stress. The maximum stress loaded in the past is memorized in rocks. Above dilatancy, we could not observe such a hysteresis. These features are explained by the nature of irreversible sudden advances of microcrack tips. Recovery process time of this hysteresis is over one month under room humidity and temperature conditions. The results in this paper cast foundation for the applicability of geostress measurements by the acoustic emission method.read more
Citations
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Journal ArticleDOI
The role of acoustic emission in the study of rock fracture
TL;DR: A review of the successes and limitations of acoustic emission (AE) studies as applied to the fracture process in rock with emphasis on our ability to predict rock failure is presented in this paper.
Journal ArticleDOI
Rheology of the lithosphere
TL;DR: In this paper, the authors present a review of the work on materials appropriate to the oceanic lithosphere with emphasis on contributions during the quadrennial period and the need for future work.
The role of acoustic emission in the study of rock
TL;DR: A review of the successes and limitations of acoustic emission (AE) studies as applied to the fracture process in rock with emphasis on our ability to predict rock failure is presented in this paper, where application of laboratory AE studies to larger scale problems related to the understanding of earthquake processes is also discussed.
Journal ArticleDOI
Two types of reservoir-induced seismicity
TL;DR: The temporal distribution of induced seismicity following the filling of large reservoirs shows two types of response: rapid increases in elastic stress due to the load of the reservoir and the more gradual diffusion of water from the reservoir to hypocentral depths as discussed by the authors.
Journal ArticleDOI
The Kaiser effect in rocks: principles and stress estimation techniques
TL;DR: A review of experimentally established features of the Kaiser effect, including those under a triaxial state of stress, is given in this paper, where the necessity and the directions for future research are outlined.
References
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Journal ArticleDOI
Dilatancy in the Fracture of Crystalline Rocks
TL;DR: In this paper, the authors measured volume changes of a granite, a marble, and an aplite during deformation in triaxial compression at confining pressure of as much as 8 kb.
Journal ArticleDOI
Microfracturing and the inelastic deformation of rock in compression
TL;DR: In this paper, a new experimental method which increased the sensitivity of detection by several orders of magnitude over that of previous studies was used, and the pattern of crack occurrence for a wide variety of rocks and at confining pressures up to 5 kb was found to be closely related to the stress-strain behavior.
Journal ArticleDOI
Experimental study of the fracturing process in brittle rock
TL;DR: In this paper, it was shown that in about 92% of the cases, a rAPid acceleration of MICRO-ACTURING ACTIVITY OCCURRED.
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The effect of cyclic differential stress on dilatancy in westerly granite under uniaxial and triaxial conditions
Mark D. Zoback,James D. Byerlee +1 more
TL;DR: In this article, the onset of dilatancy was found to occur at 1.8 and 3.0 kbar of differential compressive stress, respectively, for midcrustal earthquakes at typical focal depths of 2.5 and 10 km.
Journal ArticleDOI
Crack Healing in Glass
TL;DR: In this paper, the recovery in strength of soda-lime-silica glass cracks was determined by fracture mechanics techniques, and it was found that approximately 80% strength was recovered in cracks formed by mechanical shock, whereas only 20% were recovered after being held open to the atmosphere for several minutes.