CRACK

作品数：991被引量：1789H指数：15
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相关机构：北京理工大学河海大学南京航空航天大学哈尔滨工业大学更多>>
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Fatigue crack initiation of magnesium alloys under elastic stress amplitudes:A review被引量：17
《Frontiers of Mechanical Engineering》2019年第1期113-127,共15页B.J.WANG D.K.XU S.D.WANG E.H.HAN 
the National Natural Science Foundation of China(Grant Nos.51701129,51271183 and 51301172);Initiation Foundation of Shenyang Ligong University for Doctoral Research;the National Basic Research Program of China(973 Program)(Grant No.2013CB632205);the National Key Research and Development Program of China(Grant No.2016YFB0301105);Innovation Fund of Institute of Metal Research,Chinese Academy of Sciences.
The most advantageous property of magnesium(Mg)alloys is their density,which is lower compared with traditional metallic materials.Mg alloys,considered the lightest metallic structural material among others,have great...
关键词：Mg alloys FATIGUE behavior microstructure CRACK INITIATION DEFORMATION mechanism 
Enhancing ductility of the Al-Si coating on hot stamping steel by controlling the Fe-Al phase transformation during austenitization被引量：7
《Science China(Technological Sciences)》2014年第9期1785-1793,共9页GUI ZhongXiang LIANG WeiKang ZHANG YiSheng 
supported by the National Natural Science Foundation of China(Grant No.51275185);the National Basic Research Program of China("973"Program)(Grant No.2010CB630802-3)
In this study, austenitizing heat treatment before hot stamping of Al-10% Si coated boron steel is first investigated through en- vironment scanning electron microscopy （ESEM） equipped with energy dispersive x-ray a...
关键词：hot stamping Al-Si coating coating crack phase transformation DUCTILITY 
Dynamic Characteristics of Multi-degrees of Freedom System Rotor-bearing System with Coupling Faults of Rub-impact and Crack被引量：9
《Chinese Journal of Mechanical Engineering》2014年第4期785-792,共8页REN Zhaohui ZHOU Shihua LI Chaofeng WEN Bangchun 
Supported by National Basic Research Program of China(973 Program,Grant No.2012CB026000)
Extensive studies on rotor systems with single or coupled multiple faults have been carried out. However these studies are limited to single-span rotor systems. A finite element model for a complex rotor-bearing syste...
关键词：rotor-bearing system RUB-IMPACT CRACK dynamic characteristic INSTABILITY 
Crack location identification of rotating rotor systems using operating deflection shape data被引量：6
《Science China(Technological Sciences)》2013年第7期1723-1732,共10页ZHANG ChunLin LI Bing YANG ZhiBo XIAO WenRong HE ZhengJia 
supported by the National Natural Science Foundation of China (Grant No. 51035007);the National Basic Research Program of China ("973" Program) (Grant No. 2011CB706805);Program for Changjiang Scholars and Innovative Research Team in University
Crack location identification, as one key destination of structural health monitoring, is still a challenge for operating rotor systems. The operating deflection shape (ODS), which represents a visual description of t...
关键词：cracked rotor CRACK LOCATION IDENTIFICATION operating DEFLECTION SHAPE (ODS) WEIGHTED approximate waveform capac-ity dimension (weighted AWCD) 
Three-dimensional analysis of micro defect morphologies in cement-based materials using focused ion beam tomography被引量：1
《Science China(Technological Sciences)》2012年第6期1539-1544,共6页WAN KeShu SUN Wei TANG ChunKai RONG ZhiDan 
sponsored jointly by the foundation of National Basic Research Program of China ("973" Program) (Grant No. 2009CB623203);National Natural Science Foundation of China (Grant No. 51008072);Doctoral Program of Higher Education of China (Grant No.200802861029);SRF for ROCS,SEM
Although there has been much research of cracks of the cement-based materials using optical and electron microscopy two-dimensional (2D) imaging methods, the real three-dimensional (3D) crack shapes have not previousl...
关键词：focused ion beam (FIB) MICROSTRUCTURE CRACK cement-based materials TOMOGRAPHY 
Seismic stability analysis of concrete gravity dams with penetrated cracks被引量：2
《Water Science and Engineering》2012年第1期105-119,共15页Shou-yan JIANG Cheng-bin DU 
supported by the National Basic Research Program of China (973 Program, Grant No. 2007CB714104);the National Natural Science Foundation of China (Grant No. 50779011);the Innovative Project for Graduate Students of Jiangsu Province (Grant No. CX10B_202Z)
The seismic stability of a cracked dam was examined in this study. Geometric nonlinearity and large deformations, as well as the contact condition at the crack site, were taken into consideration. The location of pene...
关键词：seismic stability concrete gravity dam penetrated crack plastic-damage model hard contact algorithm Coloumb friction model joint opening 
I-beam Crack Identification Based on Study of Local Flexibility due to Crack被引量：3
《Chinese Journal of Mechanical Engineering》2011年第6期1116-1122,共7页LI Bing CHEN Xuefeng HE Zhengjia 
supported by National Natural Science Foundation of China (Grant No. 50805114);National Basic Research Program of China (973 Program,Grant No. 2011CB706805)
Local flexibility of crack plays an important role in crack identification of structures.Analytical methods on local flexibility in a cracked beam with simple geometric crossing sections,such as rectangle,circle,have ...
关键词：CRACK IDENTIFICATION I-BEAM local flexibility 
Modeling crack in viscoelastic media using the extended finite element method被引量：2
《Science China(Technological Sciences)》2011年第6期1599-1606,共8页YU TianTang REN QingWen 
supported by the National Basic Research Program of China ("973" Program) (Grant No 2007CB714104)
In this paper,the problem of modeling crack in 2D viscoelastic media is studied using the extended finite element method.The paper focuses on the definition of enrichment functions suitable for cracks assessment in vi...
关键词：viscoelastic media extended finite element method CRACK crack tip parameters 
Simulation Research on Stress Intensity Factors of Different Crack Aspect Ratios on Hollow Axles被引量：2
《Chinese Journal of Mechanical Engineering》2009年第5期766-771,共6页ZHOU Suxia XIE Jilong 
supported by National Basic Research and Development Program of China (973 Program, Grant No. 2007CB714705)
Because of the wicked service environment of the high speed train, it is possible that the hollow axle of the train may encounter the foreign object damage and form a sharp notch. Under the fatigue loading a crack can...
关键词：hollow axle surface crack propagation stress intensity factor finite element 
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