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Title: Experimental study on crack coalescence mechanism of granite specimens containing two surface cracks
Authors: Yin, P
Wong, RHC
Chau, KT 
Keywords: Coalescence pattern
Crack coalescence
Crack type
Surface crack
Issue Date: 2012
Source: Harmonising rock engineering and the environment - Proceedings of the 12th ISRM International Congress on Rock Mechanics, 2012, p. 897-902 How to cite?
Abstract: This paper focuses on the study of the coalescence mechanism of 3-D surface cracks. The specimens with two pre-existing parallel 3-D surface cracks were tested under uniaxial compression. The captured images from the CCD camera were used to analyze the displacement field of the pre-existing surface cracks area using Digital Speckle Correlation Method (DSCM). The DSCM technique was used for the first time to classify the crack types and coalescence patterns. According to experimental results, six different crack types were identified basing on their growth trajectories and initiation mechanisms. Meanwhile, five crack coalescence patterns were identified in accordance with the initiation mechanisms.
Description: 12th International Congress on Rock Mechanics of the International Society for Rock Mechanics, ISRM 2011, Beijing, 18-21 October 2011
ISBN: 9780415804448
Appears in Collections:Conference Paper

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