Experimental study on crack coalescence mechanism of granite specimens containing two surface cracks

P. Yin, R. H.C. Wong, Kam Tim Chau

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

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.
Original languageEnglish
Title of host publicationHarmonising Rock Engineering and the Environment - Proceedings of the 12th ISRM International Congress on Rock Mechanics
Pages897-902
Number of pages6
Publication statusPublished - 13 Feb 2012
Event12th International Congress on Rock Mechanics of the International Society for Rock Mechanics, ISRM 2011 - Beijing, China
Duration: 18 Oct 201121 Oct 2011

Conference

Conference12th International Congress on Rock Mechanics of the International Society for Rock Mechanics, ISRM 2011
CountryChina
CityBeijing
Period18/10/1121/10/11

Keywords

  • Coalescence pattern
  • Crack coalescence
  • Crack type
  • Surface crack

ASJC Scopus subject areas

  • Geology
  • Geotechnical Engineering and Engineering Geology

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