共搜索到7993条信息,每页显示10条信息,共800页。用时:0小时0分0秒500毫秒
; Novel histogram descriptor for global feature extraction and description ZHANG Gang(张 刚)1, 2, MA Zong-min(马宗民)1, DENG...; Abstract: A novel histogram descriptor for global feature extraction and description was presented. Three elementary......
......
J. Cent. South Univ. Technol. (2008) 15(s1): 346-350 DOI: 10.1007/s11771-008-378-z Feature of resistivity response of slope from steady to unsteady XIE Zhong-qiu(谢忠球)1, ZHANG Yu-chi(张玉池)2, WEN... the boundary integral equation method. After studying the feature of resistivity response of slope failure, the variety of resistivity during evolution of slope from steady to unsteady was found......
; microstructure; creep; deformation mechanism; fracture feature Foundation item: Project(51271125) supported by the National Natural Science Foundation of China Received date: 2016-03-18; Accepted date... MPa for 239 h up to fracture 3 分析与讨论 单晶镍基合金的组织结构是高体积分数的立方γ'相以共格方式嵌镶在γ基体中,其中,γ'相是具有Ll2型有序结构的金属间化合物,是单晶合金中的重要强化相,对位错运动有阻碍作用.蠕变初期,合金的微观变形特征主要是位错在γ基体通道的八面体滑移系中运动.在垂直于应力轴的γ基体通道中,承受较大的剪切应力,故使位错在该通道中滑移距......
键词:TC21钛合金;片层组织特征;断裂韧度 中图分类号:TG 146 文献标志码:A Influence of lamellar microstructure feature on fracture toughness of TC21 alloy DANG Wei1, XUE Xiang-yi1, LI Jin-shan1, HU... the relationship between lamellar microstructure feature (thickness of α laths, width of α lath at grain boundary and α colony size) and fracture toughness, the microstructures and fracture toughness of TC21 alloy......
by means of high temperature reaction. The structure feature and fracture mechanism of C/C-SiC composites were studied by means of optical microscope, scanning electron microscopy and X-ray diffraction... feature; fracture mechani
extension increments during the test are measured by means of an image processing technique using Radon transform and feature extraction. All the specimens exhibit a rising R-curve, indicating ductility and toughening mechanisms in the ductile-quasi brittle fracture of the mixture. It is observed that the reduction of temperature results in a further tendency of the mixture for unstable crack......Low temperature J-resistance curve determination of asphalt concrete using wavelet-Radon transform
AI导读
来源: 《中南大学学报(英文版)2013年第9期》——Ghafari Sepehr Moghadas Nejad Fereidoon Aflaki Esmail
and its welded joint are tested for fatigue property, and their crack propagation feature and fatigue fracture mechanism are analyzed. 2 Experimental 2.1 Materials A 10 mm-thick rolled AZ31B magnesium... Fatigue fracture mechanism of AZ31B magnesium alloy and its welded joint ZHANG Hong-xia, WANG Wen-xian, WEI Ying-hui, LI Jin-yong, WANG Jian-ling College of Materials Science and Engineering......
Adaptive WNN aerodynamic modeling based on subset KPCA feature extractionMeng Yue-bo(孟月波)1,2, Zou Jian-hua(邹建华)1, Gan Xu-sheng(甘旭升)3, LIU Guang-hui(刘光辉)2(1. Systems Engineering Institute, School... modeling, an adaptive wavelet neural network (AWNN) aerodynamic modeling method is proposed, based on subset kernel principal components analysis (SKPCA) feature extraction. Firstly, by fuzzy C-means......
Improvement of Fracture Toughness Lanthanum Zirconate DAI H1,CAO X Q1,LI Q1,LI J Y1,ZHONG X H1 (1.Key Lab of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese... temperature applications. The fracture toughness and microhardness of nanocrystalline LZ (n-LZ), microcrystalline LZ (m-LZ) and LZ-5mol%8YSZ (LZ-5-8YSZ) composite (8YSZ for zirconia stabilized by 8 mol......