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《Journal of China Coal Society》 2007-05
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Study on the rock damage characteristics based on the technique of CT image processing

YANG Geng-she,LIU Hui(School of Civil Engineering and Architecture,Xi'an University of Science & Technology,Xi'an 710054,China)  
Based on the CT image of rock,came up with a new method of CT image analysis and made the best of information of CT image.Firstly,accomplished false color reinforcement of CT image and analyzed the damage propagation characteristics of rock according to histogram of CT image.In this way we can not only directly see the course of damage propagation from the sense of sight but also quantificationally and accurately analyze the damage propagation of rock under different damage stage.Then,the real microstructure was got by the technique of image segmentation and extracted cranny and hole and rock mass from CT image.Digital image processing methods were used as a measurement tool to construct a digital representation for the actual spatial distribution of different materials in the rock.Lastly,defined the damage variable about damage area and obtained the relation between damage variable and damage deviatoric stress which correspond exactly to the damage propagation characteristics.
【Fund】: 国家自然科学基金资助项目(40372119);; 教育部优秀青年教师基金资助项目(2091)
【CateGory Index】: TU452
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