Investigation the effect of cyclic loading on fracture propagation in rocks by using Computed Tomography (CT) techniques
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Tarih
2015
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
American Rock Mechanics Association (ARMA)
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In Brazilian test, applied diametrical compression stress induces indirect tensile stresses normal to the vertical plane crossing through the rock disc and the ultimate failure occurs at the place where the maximum tensile stress is concentrated. The mechanical behaviour of rock with pre-existing cracks under static loading has been studied widely. In this study, the fracturing behaviour of Brisbane Tuff, under static and cyclic loading has been analysed applying an ISRM standard Cracked Chevron Notched Brazilian Disc (CCNBD) geometry. Specifically, X-ray Computed Tomography (CT) techniques have been used to investigate the fracturing behaviour of rocks under static and cyclic loading. The fracturing behaviour of rocks technically depends on the nature of loading, strength of mineral and text of rocks. Laboratory observations demonstrated that there is a distinct difference in fracturing between the static and cyclic loading. It was found that the cyclic loading had an important effect on micro-fracture propagation through the Fracture Propagation Zone (FPZ). Copyright 2015 ARMA, American Rock Mechanics Association.
Açıklama
49th US Rock Mechanics / Geomechanics Symposium -- 29 June 2015 through 1 July 2015 -- San Francisco -- 119212
Anahtar Kelimeler
Computerized tomography, Crack propagation, Cracks, Cyclic loads, Fracture, Rock mechanics, Rocks, Tensile stress, Tomography, Cracked chevron notched Brazilian disc, Diametrical compression, Fracture propagation, Indirect tensile, Mechanical behaviour, Pre-existing crack, Ultimate failure, X-ray computed tomography, Minerals
Kaynak
49th US Rock Mechanics / Geomechanics Symposium 2015
WoS Q Değeri
Scopus Q Değeri
Cilt
4
