摘要
利用CT识别技术对非贯通节理试样的单轴加载全过程进行即时扫描。根据不同应力水平下损伤区域CT图像像素点数的多少,计算分形维数,以此表征损伤程度,并建立不同裂隙倾角下分形维数与应力水平的关系式;提出了损伤局部化参数,分析了分维数与损伤局部化的关系,并通过分维数来反映损伤的局部化程度。
CT identification technology is used to conduct timely scanning of the uniaxial loading complete process of non-consecutive joint samples. The fractal dimension is calculated in terms of the pixels of CT image of damaged zone in different stress levels, which can indicate the damage conditions, on the basis of which, the formula between fractional dimension and stress levels under different joint slant angles is established. This paper suggests the local damage parameters and analyzes the relationship between fractal dimension and partial damage. Also, the partial damage conditions can be reflected via fractal dimension.
出处
《西安理工大学学报》
CAS
2006年第1期1-4,共4页
Journal of Xi'an University of Technology
基金
国家自然科学基金资助项目(50479023)
陕西省重点科研计划项目(05JS34)
陕西省重点实验室建设项目(03JS039)
关键词
非贯通节理介质
CT识别
分形
局部化损伤
non-consecutive jointed media
CT identification
fraction
partial damage
