MICRO-CRACKS

作品数：22被引量：37H指数：4
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Very high cycle fatigue resistance improvement of Mg-Gd-Zn-Zr alloy by introducing curved long-period stacking ordered lamellae
《Journal of Magnesium and Alloys》2025年第3期1218-1231,共14页Min Zhan Xinglin Yang Shoucheng Shi Yao Chen Lang Li Bing Xue Yongbo Li Wanshuang Yi Qingyuan Wang Chao He 
supported by the National Natural Science Foundation of China(grant nos.12072212,12372185 and 12102280);the Sichuan Province Science and Technology Project(grant nos.2023NSFSC1918,and 2022JDJQ0011).
Magnesium alloys with long-period stacking ordered(LPSO)structures are known for their impressive static mechanical strength,but the consistent occurrence of slip-cracking along the LPSO lamellae,which do not effectiv...
关键词：Very high cycle fatigue Mg-Gd-Zn-Zr alloy Crack initiation Curved LPSO lamellae MICRO-CRACKS 
Evolution mechanism and quantitative characterization of initial micro-cracks in marble under triaxial compression
《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2024年第7期586-595,共10页Zhiliang WANG Songyu LI Jianguo WANG Ao LI Weixiang WANG Chenchen FENG Jingjing FU 
supported by the National Natural Science Foundation of China(Nos.12272119 and U1965101).
The initial micro-cracks affect the evolution characteristics of macroscopic deformation and failure of rock but are often ignored in theoretical calculation,numerical simulation,and mechanical experiments.In this stu...
关键词：MARBLE Initial micro-cracks Triaxial compression Constitutive relationship Crack evolution 
Shear behavior and off-fault damage of saw-cut smooth and tension-induced rough joints in granite被引量：1
《Journal of Rock Mechanics and Geotechnical Engineering》2024年第4期1216-1230,共15页Fanzhen Meng Feili Wang Louis Ngai Yuen Wong Jie Song Muzi Li Chuanqing Zhang Liming Zhang 
financial support from Taishan Scholars Program(Grant No.2019KJG002);National Natural Science Foundation of China(Grant Nos.42272329 and 52279116).
The damage of rock joints or fractures upon shear includes the surface damage occurring at the contact asperities and the damage beneath the shear surface within the host rock.The latter is commonly known as off-fault...
关键词：Planar joint Rough joint Shear behavior Off-fault damage MICRO-CRACKS 
Selective Laser Melting of Carbon-Free Mar-M509 Co-Based Superalloy:Microstructure,Micro-Cracks,and Mechanical Anisotropy被引量：2
《Acta Metallurgica Sinica(English Letters)》2022年第3期501-516,共16页Xiaodong Wang Chaoyue Chen Ruixin Zhao Longtao Liu Sansan Shuai Tao Hu Jiang Wang Zhongming Ren 
financially supported by the National Key Research and Development Program of China(No.2019YFA0705300);the Chinese National Science and Technology Major Project“Aeroengine and Gas Turbine”(No.2017-VII0008-0102);the Shanghai Science and Technology Committee(No.19DZ1100704);Shanghai Shuguang Program(No.20SG42);Shanghai Sailing Program(No.19YF1415900);the National Natural Science Foundation of China(No.52001191);the Shanghai Rising-Star Program(No.20QA1403800)。
In this work,the microstructural evolution,micro-crack formation,and mechanical anisotropy of the selective laser melted(SLM)carbon-free Mar-M509 Co-based superalloy were systematically studied under different linear ...
关键词：Selective laser melting Mar-M509 Co-based superalloy Linear energy density ANISOTROPY Mechanical properties 
Sex,but not age and bone mass index positively impact on the development of osteochondral micro-defects and the accompanying cellular alterations during osteoarthritis progression
《Chronic Diseases and Translational Medicine》2022年第1期41-50,共10页Angelos Kaspiris Efstathios Chronopoulos Elias Vasiliadis Lubna Khaldi Dimitra Melissaridou Ilias D.Iliopoulos Olga D.Sawidou 
Background:Osteoarthritis(ΟΑ)is characterized by cartilage breakdown and subchondral sclerosis.Micro-fractures of the calcified tissues have been,also,detected,but their exact role has not been elucidated yet.This s...
关键词：demographic characteristics matrix metalloproteinase-2 MICRO-CRACKS OSTEOARTHRITIS 
Strengthening leaching effect of Carlin-type gold via high-voltage pulsed discharge pretreatment被引量：1
《International Journal of Minerals,Metallurgy and Materials》2021年第6期965-973,共9页Peng Gao Yong-hong Qin Yue-xin Han Yan-jun Li Si-ying Liu 
This work was financially supported by the National Natural Science Foundation of China(No.51974063);the Fundamental Research Funds for the Central Universities,China(No.N180104016).
A high-voltage pulsed discharge(HVPD)pretreatment was used to strengthen the leaching effect of Carlin-type gold ore containing arsenic.Optimal results of the pretreatment experiments were obtained at the following op...
关键词：high-voltage pulse discharge pretreatment Carlin-type gold leaching rate particle size distribution MICRO-CRACKS 
Displacive transformation as pathway to prevent micro-cracks induced by thermal stress in additively manufactured strong and ductile high-entropy alloys被引量：10
《Transactions of Nonferrous Metals Society of China》2021年第4期1059-1073,共15页Rui-di LI Peng-da NIU Tie-chui YUAN Zhi-ming LI 
financial support of the National Natural Science Foundation of China (51505166,51971248);the Huxiang Young Talents Project (2018RS3007,2019RS1001);the Innovation-Driven Project of Central South University,China (2020CX023);Science and Technology Project of Hunan Province (2020GK2031)。
The micro-cracking behaviors of two high-entropy alloys(HEAs) of the FeMnCoCrNi family prepared by selective laser melting were systematically studied. Residual stresses were also analyzed by X-ray diffraction techniq...
关键词：selective laser melting high-entropy alloys phase transformation MICRO-CRACKING residual stress 
Location of micro-cracks in plates using time reversed nonlinear Lamb waves被引量：2
《Chinese Physics B》2020年第5期311-317,共7页Yaoxin Liu Aijun He Jiehui Liu Yiwei Mao Xiaozhou Liu 
Project supported by the National Key Research and Development Program of China(Grant No.2016YFF0203000);the State Key Program of the National Natural Science Foundation of China(Grant No.11834008);the National Natural Science Foundation of China(Grant No.11774167);the Fund from the State Key Laboratory of Acoustics,Chinese Academy of Sciences(Grant No.SKLA201809);the Science Fund from the Key Laboratory of Underwater Acoustic Environment,Chinese Academy of Sciences(Grant No.SSHJ-KFKT-1701);the Natural Science Fund for AQSIQ Technology Research and Development Program,China(Grant No.2017QK125).
A promising tool to detect micro-cracks in plate-like structures is used for generating higher harmonic Lamb waves.In this paper,a method combining nonlinear S0 mode Lamb waves with time reversal to locate micro-crack...
关键词：Lamb waves higher harmonics time reversal damage location 
Micro-crack detection of nonlinear Lamb wave propagation in three-dimensional plates with mixed-frequency excitation被引量：3
《Chinese Physics B》2020年第1期336-345,共10页Wei-Guang Zhu Yi-Feng Li Li-Qiang Guan Xi-Li Wan Hui-Yang Yu Xiao-Zhou Liu 
Project supported by the National Natural Science Foundation of China(Grant Nos.61571222,61602235,and 11474160);the Six Talent Peaks Project of Jiangsu Province,China
We propose a nonlinear ultrasonic technique by using the mixed-frequency signals excited Lamb waves to conduct micro-crack detection in thin plate structures.Simulation models of three-dimensional(3D)aluminum plates a...
关键词：nonlinear Lamb wave mixed-frequency MICRO-CRACKS amplitude ratio 
Mechanical Behavior of Polyurethane Polymer Materials under Triaxial Cyclic Loading:A Particle Flow Code Approach被引量：4
《Journal of Wuhan University of Technology(Materials Science)》2018年第4期980-986,共7页刘恒 WANG Fuming 石明生 TIAN Wenling 
the National Key R&D Program of China(No.2017YFC0405002)
Polyurethane polymer grouting materials were studied with conventional triaxial tests via the particle flow code in two dimensions（PFC^（2D）） method, and the simulation results agreed with the experimental data. Th...
关键词：POLYMER particle flow code cyclic loading elastic modulus MICRO-CRACKS axial strain 
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