It was observed that there was a direct connection between the fractographs, the fracturepath and the crack tip crazes or microcracks in rib region.
发现断面形态、裂纹路径以及肋状区裂端簇射状银纹群之间有直接联系。每一肋条由一细砂带和一粗破带构成。
2
The models and computation procedures for determining fracture propagation path were provided, and the software for simulation of fracture propagation was developed.
提出了定向射孔水力压裂裂缝的延伸轨迹计算模型和步骤，编制了裂缝延伸的模拟软件。
3
Therefore, a new efficient path to research plane crack problems especially composite materials plane fracture mechanicals is found.