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solidification microstructure dominantly consists of supersaturated α-Mg solid solution. The mechanical properties and fractographic analysis reveal that the fracture mechanism and corresponding morphology...; fracture surface morphology  ......
J. Cent. South Univ. (2018) 25: 653-661 DOI: https://doi.org/10.1007/s11771-018-3768-x Degradation of joint surface morphology, shear behavior and closure characteristics during cyclic loading FAN...: In order to investigate the failure mechanism of rock joint, a series of laboratory tests including cyclic direct shear tests under constant normal load(CNL) conditions were conducted. Morphology......
℃ for 24 h, is up to 765 MPa. Key words: aluminum matrix composite; spray deposition; heat-treatment; fracture morphology fracture strength of the as-aged sample is 765 MPa, which is much higher than that of the as-extruded and the as-solid-solution treated......
exhibits honeycomb morphology. After thermal exposure, a brittle oxygen-riched subsurface layer forms, the crack initiates on the surface of the tensile specimens, the fracture is hybrid fracture... temperature titanium alloy; thermal stability; oxygen-enriched layer; fracture morphology  ......
基于方向特征及引力模型的路面裂缝检测吴成东,卢佰华,陈东岳,王力东北大学信息科学与工程学院摘 要:针对全局性路面裂缝检测方法的局限,提出了一种基于方向特征及引力模型的路面裂缝检测方法.算法首先根据裂缝的延伸性及局部过渡性,搜索裂缝端点,并设计了反映裂缝线型特征的方向因子及方向导数区分度判据,使裂缝判别局限在裂缝端点延伸方向的局部邻域内,有效地阻止了非裂缝区域冗余信息的引入.进一步根据人类判别裂缝的视觉特性,借鉴物理学原理建立了裂缝引力模型,增强了噪斑存在时裂缝连接的鲁棒性.结合颜色距离,设计了裂缝延伸与连接......
基于多特征分析的路面裂缝检测算法卢紫微1,2,张燕1,常东超1,吴成东21. 辽宁石油化工大学计算机与通信工程学院2. 东北大学信息科学与工程学院摘 要:针对高速公路路面图像噪声成分复杂,路面裂缝损伤检测效率低,安全性差等问题,提出一种应用多特征分析的路面裂缝检测算法.首先将获取的高速公路图像进行分块处理,在每个分块图像上提取裂缝及其周围区域图像的灰度,局部熵和局部二进制模式(Local Binary Pattern,LBP)纹理特征构建特征向量,然后将特征向量输入支持向量机(Support Vector ......
at 1 380 ℃. Key words: Mo-Ti-Zr alloy rods; rotary forging; relative density; fracture surface morphology  ... rotary forging to deformation amount of 33% at 1 250 ℃. The increase of relative density of Mo-Ti-Zr alloy rods reaches the lowest after rotary forging to deformation amount of 19.2%. The fracture type......
New fracture morphology of amorphous Fe78Si9B13 alloy ZHANG Kai-feng(张凯锋), LI Xi-feng(李细锋) School of Materials Science and Engineering, Harbin Institute of Technology, Harbin150001, China...; Abstract: The tensile fracture morphology of a brittle amorphous Fe-based ribbon was investigated by scanning electron microscopy(SEM). The fracture surface consists......