IMECH-IR  > 力学所知识产出(1956-2008)
Damage evaluation and damage localization of rock
Xu XH(许向红); Ma SP; Xia MF(夏蒙棼); Ke FJ(柯孚久); Bai YL(白以龙)
Source PublicationProceedings of the International Conference on Restoration, Recycling and Rejuvenation Technology for Engineering and Architecture Application
2004
Conference NameProceedings of the International Conference on Restoration, Recycling and Rejuvenation Technology for Engineering and Architecture Application
Conference DateJune 7, 2004 - June 11, 2004
Conference PlaceCesena, Italy
AbstractTo properly evaluate damage accumulation and to foresee the failure due to damage evolution are prerequisite for effective maintenance of civil engineering and to avoid disaster. Based on statistical mesoscopic damage mechanics, it was revealed that there are three stages in the process of deformation, damage and failure of multiscale heterogeneous elastic-brittle medium. These are uniformly distributed damage, localized damage and catastrophic failure. In order to identify the transitions from scattering damage to macroscopically localized one, a condition for damage localization was given. The experiments of rock under uniaxial compression with the aid of observations of acoustic emission and speckle correlation do support the concept of localization. This provides a potential approach to properly evaluate damage accumulation in practice. In addition, it is found in the experiments that catastrophic failure displays critical sensitivity. This gives a helpful clue to the prediction of catastrophic failure.
KeywordCritical Sensitivity Damage Evolution Damage Localization Uniaxial Compression
ISBN8879997653
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60324
Collection力学所知识产出(1956-2008)
Recommended Citation
GB/T 7714
Xu XH,Ma SP,Xia MF,et al. Damage evaluation and damage localization of rock[C],2004.
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