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Title:
Damage evaluation and damage localization of rock
Author: Xu XH(许向红); Ma SP; Xia MF(夏蒙棼); Ke FJ(柯孚久); Bai YL(白以龙)
Issued Date: 2004
Conference Name: Proceedings of the International Conference on Restoration, Recycling and Rejuvenation Technology for Engineering and Architecture Application
Conference Date: June 7, 2004 - June 11, 2004
Conference Place: Cesena, Italy
Abstract: To 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.
Keyword: Critical sensitivity ; Damage evolution ; Damage localization ; Uniaxial compression
Indexed Type: EI
Source: Proceedings of the International Conference on Restoration, Recycling and Rejuvenation Technology for Engineering and Architecture Application
Language: 英语
ISBN: 8879997653
Content Type: 会议论文
URI: http://dspace.imech.ac.cn/handle/311007/60324
Appears in Collections:力学所知识产出(1956-2008)_会议论文

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Recommended Citation:
Xu XH,Ma SP,Xia MF,et al. Damage evaluation and damage localization of rock[C]. 见:Proceedings of the International Conference on Restoration, Recycling and Rejuvenation Technology for Engineering and Architecture Application. Cesena, Italy. June 7, 2004 - June 11, 2004
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