NDLI: Absorption of energy in cyclically loaded rock

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Absorption of energy in cyclically loaded rock

Content Provider	Scilit
Author	Rubin, G. A. Leach, M. F.
Copyright Year	2020
Description	It has been shown in our Laboratory that sonic or ultrasonic resonances generated in different types of very hard rock from Sudbury -mines lead either to significant heating of the samples at locations of maximum axial strain or to fragmentation of the rock at an energy input which is considerably lower that the energy necessary for fracture by other novel methods (1). In order to study the response to cyclic loading of the different rock types, the harmonics generated in the rock samples and the occurrence of interharmonics or subharmonics during cyclic loading were recorded as a function of the dynamic strain. The rate of growth of the amplitude of the harmonics and the occurrence of interharmonics and subharmonics seem to indicate that in the lesser hard rock viscoelastic processes lead to temperature increases and not necessarily to fragmentation while in the hardest rock the formation of microcracks and rapid crack propagation lead to fragmentation without significant heating. Book Name: Mechanics of Jointed and Faulted Rock
Related Links	https://api.taylorfrancis.com/content/chapters/edit/download?identifierName=doi&identifierValue=10.1201/9781003078975-60&type=chapterpdf
Ending Page	434
Page Count	6
Starting Page	429
DOI	10.1201/9781003078975-60
Language	English
Publisher	Informa UK Limited
Publisher Date	2020-11-24
Access Restriction	Open
Subject Keyword	Book Name: Mechanics of Jointed and Faulted Rock Microscopic Research Hard Rock Interharmonics Subharmonics Cyclic Loading Function
Content Type	Text
Resource Type	Chapter

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