very high cycle fatigue of engineering materials a
Many engineering components reach a finite fatigue life well above 109 load cycles.Some examples of such components are found in airplanes,automobiles or high speed trains.For some materials the fatigue failures have lately been found to occur well after 107 load cycles,namely in the Very High Cycle Fatigue (VHCF) range. results for this questionIs there a fatigue limit at 107 load cycles?Is there a fatigue limit at 107 load cycles?For most of them the existence of the fatigue limit at 107load cycles has been proved wrong and their fatigue strength continues to decrease with increasing number of load cycles.High performance steels is an important group of materials used for the production of components subjected to the VHCF.Very high cycle fatigue of tool steels - DiVA portal results for this questionWhat is low cycle fatigue?What is low cycle fatigue?The number of cycles to failure is low for LCF and high for HCF,hence the terms low and high cycle fatigue.Transition between LCF and HCF is determined by the stress level,i.e.transition between plastic and elastic deformations.What is the Difference between Low High Cycle Fatigue? - Fatec
results for this questionWhich is very high cycle fatigue of tool steels dissertation?Which is very high cycle fatigue of tool steels dissertation?Very high cycle fatigue of tool steels DISSERTATION Karlstad University Studies 2010:20 ISSN 1403-8099 ISBN 978-91-7063-312-6 © The Author Distribution Faculty of Technology and Science Materials Engineering SE-651 88 Karlstad +46 54 700 10 00 kau.se Printed at Universitetstryckeriet,Karlstad 2010 i Abstract Very high cycle fatigue of tool steels - DiVA portalAuthor Manuela SanderPublish Year 2018Fatigue of Materials at Very High Numbers of Loading
Investigation of the fatigue behaviour of carbon fibre reinforced plastics due to micro-damage and effects of the micro-damage on the ply strengths in the very high cycle fatigue regime.Pages 561-583.Hopmann,Christian (et al.)Author Vitaliy KazymyrovychInternal crack characteristics in very-high-cycle fatigue Gradient structure (GS) is commonly designed and processed in engineering materials to improve mechanical properties especially fatigue performance by taking advantage of the strengthened surface.However,whether the very-high-cycle fatigue (VHCF) property can be improved by GS is questioning due to the different crack initiation mechanisms between low-,high-cycle and VHCF.
Author Ying Xia Yu,Bo Lin He,Zong Min Lv,Kang Wei,Zhi Jun ZhangPublish Year 2015Materials Free Full-Text Very High Cycle Fatigue
The unexpected failures of structural materials in very high cycle fatigue (VHCF) regime have been a critical issue in modern engineering design.In this study,the VHCF property of a Cr-Ni-W gear steel was experimentally investigated under axial loading with the stress ratio of R = 1,and a life prediction model associated with crack initiation and growth behaviors was proposed.Author Yongtao Hu,Yao Chen,Chao He,Yongjie Liu,Qingyuan Wang,Chong WangPublish Year 2020Very high cycle fatigue characterization of additively Dec 21,2020·It was found that fatigue data of tested specimens fit more closely the data of specimens without any heat treatment.Fatigue test results indicate that effects of heat treatment on high cycle fatigue (HCF) and very high cycle fatigue (VHCF) performance of AM alloys should be further investigated in the context of the microstructural changes.Cited by 10Publish Year 2019Author Xiangnan Pan,Youshi HongCurrent understanding of ultra-high cycle fatigue Jan 01,2012·The very high cycle fatigue life of the materials is mainly devoted to the fatigue crack initiation.The mea- surement of number of cycles required to initiate a crack 031002-6 Q.Y.Wang,M.K.Khan,and C.Bathias Theor.
Cited by 12Publish Year 2015Author Hailong Deng,Wei Li,Tatsuo Sakai,Zhenduo SunVery High Cycle Fatigue (VHCF) Characteristics of Carbon
Feb 18,2020·Author information (1)Aeronautics Engineering College,Air Force Engineering University,Xi'an 710038,China.A liquid nitrogen cooling system was developed to ensure the successful ultrasonic testing of composite materials to characterize the very High Cycle Fatigue (VHCF) of carbon fiber reinforced plastics (CFRP).Cited by 12Publish Year 2018Author Baohua Nie,Zihua Zhao,Shu Liu,Dongchu Chen,Yongzhong Ouyang,Zhudong Hu,Touwen Fan,Haibo SunInterior crack initiation and growth behaviors and life Interior crack initiation and growth behaviors and life prediction of a carburized gear steel under high cycle fatigue and very high cycle fatigue - Volume 30 Issue 14 - Wei Li,Zhenduo Sun,Hailong Deng,Zhenyu Zhang,Tatsuo SakaiCited by 16Publish Year 2019Author Guhui Gao,Qingzhen Xu,Haoran Guo,Xiaolu Gui,Baoxiang Zhang,Bingzhe BaiEffects of inclusions on the very high cycle fatigue Jul 10,2017·The very high cycle fatigue of highstrength steels and many other alloys is controlled by the initiation and the propagation of cracks initiated at nonmetallic inclusions.Tiny cracks are early initiated from these inclusions.
Cited by 18Publish Year 2016Author Sun CQ(),Zhang XL(),Liu XL(),Hong YS()Failure mechanism of a precipitation hardened titanium
Very High Cycle Fatigue (VHCF) is the case of fatigue fracture under more than a billion cycles.It is a rather common fact that there is a decrease in fatigue strength in the VHCF regime for some metals such as aluminum alloys.Cited by 19Publish Year 2017Author André Pineau,Samuel ForestMaterials Free Full-Text Bending Fatigue Behavior of Effect of microstructure on the crack initiation and early propagation mechanism in the very high cycle fatigue (VHCF) regime was studied in 316L stainless steel (316L SS) by atomic force microscope (AFM) and electron back scattered diffraction (EBSD).The results show that small fatigue cracks initiate from the slip band near the grain boundaries (GBs) or the twin boundaries (TBs).Cited by 1Publish Year 2020Author Wenbin Cui,Xuan Chen,Chao Chen,Li Cheng,Junliang Ding,Hui ZhangSome results are removed in response to a notice of local law requirement.For more information,please see here.12345Next
Cited by 1Publish Year 2021Author Xavier Lesperance,Paul Ilie,Ayhan InceVery High Cycle Fatigue Research Papers - Academia.edu
Materials Engineering,Very High Cycle Fatigue,Grain Boundary,Fatigue Life Very high cycle fatigue behaviour of as-extruded AZ31,AZ80,and ZK60 magnesium alloys Résumé/Abstract The very high cycle fatigue properties of extruded AZ31,AZ80,and ZK60 magnesium alloys were investigated.Cited by 255Publish Year 2011Author Brita Pyttel,D.Schwerdt,C.BergerHighcycle and veryhighcycle fatigue behaviour of a Abstract.The fatigue behaviour of a titanium alloy Ti6Al4V with equiaxed microstructure (EM) under different values of tensile mean stress or stress ratio ( R) was investigated from highcycle fatigue (HCF) to veryhighcycle fatigue (VHCF) regimes via ultrasonic axial cycling.The effect of mean stress or R on the fatigue strength of HCF and VHCF was addressed by Goodman,Gerber,and Authors'Cited by 25Publish Year 2015Author Matsunaga H,Matsunaga H,Sun C,Hong YS(),Murakami YVery High Cycle Fatigue Behavior of a Directionally The effect of casting pores on the very high cycle fatigue (VHCF) behavior of a directionally solidified (DS) Ni-base superalloy DZ4 is investigated.Casting and hot isostatic pressing (HIP) specimens were subjected to very high cycle fatigue loading in an ambient atmosphere.The results demonstrate
Cited by 2Publish Year 2017Author Chao He,Kazuhiro Kitamura,Kun Yang,Yong Jie Liu,Qing Yuan Wang,Qiang ChenEffects of specimen size on fatigue life of metallic
Yuanpei Hu,Chengqi Sun,Youshi Hong,Crack growth rates and microstructure feature of initiation region for veryhighcycle fatigue of a highstrength steel,Fatigue Fracture of Engineering Materials Structures,10.1111/ffe.12811,41,8,(1717-1732),(2018).Cited by 2Publish Year 2019Author Zhiyong Huang,Zhen Zhang,Zhenjie Teng,Muhammad Kashif Khan,Muhammad Kashif Khan,Qingyuan Wang,Influential Factors for Very High Cycle Fatigue Behavior In recent years,very high cycle fatigue has become a major concern in design and durability of engineering components and structures such as railway wheels,rails,offshore structures,bridges,load bearings,etc.There are some factors which have been assumed to influence the fatigue behavior for metallic materials in VHCF regime.But most factors influencing the VHCF behavior have not been Cited by 2Publish Year 2020Author Xiangnan Pan,Guian Qian,Shengchuan Wu,Yanan Fu,Youshi HongStatistical approaches applied to very high cycle fatigueFourth International Conference on Very High Cycle Fatigue (VHCF-4) Edited by John E.Allison,J.Wayne Jones,J ames M.Larsen and Rober t O.Ritchie TMS (The Minerals,Metals Materials Societ
Cited by 2Publish Year 2020Author Xiangnan Pan,Guian Qian,Shengchuan Wu,Yanan Fu,Youshi HongVery high cycle fatigue of tool steels
mechanical fatigue could be sub-divided into low cycle fatigue (LCF) up to 104 cycles to failure; high cycle fatigue (HCF) between 104 and 107 cycles to failure and very high cycle fatigue (VHCF) over 107 cycles to failure.The VHCF of engineering materials is a phenomenon that first becameCited by 6Publish Year 2017Author Baohua Nie,Zihua Zhao,Yongzhong Ouyang,Dongchu Chen,Hong Chen,Haibo Sun,Shu LiuEffect of fretting damage on characteristics of high Aug 01,2019·High strength structural steels are widely used in the service life of engineering components up to 10 9 10 10 fatigue cycles,.The fatigue strength of materials at 10 7 cycles is used as the fatigue limit and a higher factor of safety is used for design life up to 10 9 10 10 fatigue cycles.Cited by 7Publish Year 2012Author Qingyuan Wang,Muhammad Kashif Khan,Claude BathiasFatigue of Materials at Very High Numbers of Loading Slip band formation and crack initiation during very high cycle fatigue of duplex stainless steel Part 1 Mechanical testing and microstructural investigations T.Waurischk,M.Söker,A.Giertler,N.Schönhoff,M.Galster,B.Dönges et al.
Cited by 99Publish Year 2015Author Xiaolong Liu,Chengqi Sun,Youshi HongEffect of inclusion and microstructure on the very high
Jan 02,2019·Very high cycle fatigue (VHCF,i.e.,enduring cyclic stress in excess of 107 cycles) behavior of metallic materials has become an important subject to ensure the long-term safety of the structural components,such as aircraft (gas turbine disks 10 10 cycles),automobiles (car engine 10 8 cycles),and railways (high speed train axles 10 9 cycles),,.Dominant factors for veryhighcycle fatigue of high Abstract.Dominant factors affecting fatigue failure from nonmetallic inclusions in the veryhighcycle fatigue (VHCF) regime are reviewed,and the mechanism for the disappearance of the conventional fatigue limit is discussed.Specifically,this paper focuses on the following (i) the crucial role of internal hydrogen trapped by nonmetallic inclusions for the growth of the optically dark area (around theEffect of Low Cycle Fatigue Predamage on Very High Cycle The effect of low cycle fatigue (LCF) predamage on the subsequent very high cycle fatigue (VHCF) behavior is investigated in TC21 titanium alloy.LCF predamage is applied under 1.8% strain amplitude up to various fractions of the expected life and subsequent VHCF properties are determined using ultr
Jan 12,2015·Titanium alloys have been widely used as superior engineering materials because of their high specific strength,high temperature resistance and high corrosion resistance.In their engineering applications,such as in aircraft engines,titanium alloys may experience even 10 10 fatigue cycles ,.The fatigue behavior of titanium alloys in the very-high-cycle fatigue (VHCF) regime hasFaculty of Technology and Science Materials Engineeringconcept the mechanical fatigue could be sub-divided into low cycle fatigue (LCF) up to 10 6 cycles to failure; high cycle fatigue (HCF) between 10 6 and 10 8 cycles to failure and very high cycle fatigue (VHCF) over 10 8 cycles to failure.The VHCF represents the main point of interest in this study.Images of Very High Cycle Fatigue of Engineering Materials A imagesPeople also askWhen does fatigue failure occur in a material?When does fatigue failure occur in a material?For many materials the fatigue failures have lately been reported to occur well after 107load cycles,namely in the Very High Cycle Fatigue (VHCF) range.Very high cycle fatigue of tool steels - DiVA portal
Mar 16,2020·Hu,Y.,Sun,C.,Xie,J. Hong,Y.Effects of loading frequency and loading type on high-cycle and very-high-cycle fatigue of a high-strength steel.MaterialsSpecial Issue Advances in Very-High-Cycle FatigueIn the early 90s,the disconcerting finding of fatigue failures beyond 10 8 cycles and below the conventional fatigue limit has been the main driver for the rapid diffusion of research in the so-called very-high-cycle fatigue (VHCF) regime of materials.Recently,the research on VHCF has been further boosted by the need to fill in the gap of knowledge regarding the structural integrity of machinery partsVery High Cycle Fatigue Crack Initiation Mechanism in Very high cycle fatigue behavior of nugget zone in AA 7075 friction stir welded joint was experimentally investigated using ultrasonic fatigue testing system (20kHz) to clarify the crack initiation mechanism.It was found that the fatigue strength of nugget zone decreased continuously even beyond 10 7 cycles with no traditional fatigue limits.
Mean stress sensitivity in fatigue of ,( + ) and titanium alloys.The effect of the stress ratio on high cycle fatigue (HCF) strength has been investigated on ,() and titanium alloys.While and titanium alloys show a normal mean stress sensitivity,() alloys can behave anomalously,i.e.more.Very high cycle fatigue Is there a fatigue limit Jan 01,2011·Not only metals with a face-centred cubic lattice show a decrease in fatigue strength at very high number of cycles but also some metals with a body-centred cubic lattice.The decrease depends on the material strength and condition and can lead to failures at stresses below the conventional fatigue limit.Very high cycle fatigue SpringerLinkApr 12,2018·[4-15] Nakasone,Y.; Hara,H.FEM simulation of growth of fish-eye cracks in the very high cycle fatigue of a high strength steel SUJ2.In Sakai,T.; Ochi,Y.(Eds.) Proceedings of the Third International Conference of Very High Cycle Fatigue,VHCF-3,The Society of Materials Science Japan,Kyto,2004,S.4047 Google Scholar
For some materials the fatigue failures have lately been found to occur well after 10 7 load cycles,namely in the Very High Cycle Fatigue (VHCF) range.This finding contradicted the established concept of fatigue limit for these materials,which postulates that having sustained 10 7 load cycles the material is capable of enduring an infinite number of cycles provided that the service conditions are unchanged.What is the Difference between Low High Cycle Fatigue Aug 23,2018·The difference between low cycle fatigue (LCF) and high cycle fatigue (HCF) has to do with the deformations.LCF is characterized by repeated plastic deformation (i.e.in each cycle),whereas HCF is characterized by elastic deformation.The number of cycles to failure is low for LCF and high for HCF,hence the terms low and high cycle fatigue.