Results 101 to 110 of about 826 (197)

Fatigue life time modelling of Cu and Au fine wires

MATEC Web of Conferences, 2018
In this study, the influence of microstructure on the cyclic behaviour and lifetime of Cu and Au wires with diameters of 25μm in the low and high cycle fatigue regimes was investigated.
Khatibi Golta, Mazloum-Nejadari Ali, Lederer Martin, Delshadmanesh Mitra, Czerny Bernhard   +4 more
doaj   +1 more source

A two-parameter model for fatigue strength estimation of high-strength steels in very-high-cycle-fatigue regime

, 2013
A model containing two microscopic parameters, i.e. inclusion size and fine granular area size (FGA) is proposed for the estimation of fatigue strength or S-N curve of high-strength steels with fish-eye failure mode for very-high-cycle-fatigue (VHCF ...
Sun CQ(孙成奇), Hong YS(洪友士)
core  

Variations of VHCF Characteristics by Microstructure of a Spring Steel to UNSM Treatment

한국해양공학회지
The bainitic structure resulting from the austempering of spring steel exhibits high strength and ductility. On the other hand, there appears to be no study on the effects of very high cycle fatigue (VHCF) and ultrasonic nanocrystal surface modification (
Seung-Hoon Nahm, Min-Soo Suh, Chang-Min Suh   +2 more
doaj   +1 more source

Fractography and Crack Initiation of Very-High-Cycle Fatigue for a High Carbon Low Alloy Steel

, 2006
Very-High-Cycle Fatigue (VHCF) is the phenomenon of fatigue damage and failure of metallic materials or structures subjected to 108 cycles of fatigue loading and beyond.
钱桂安, 周承恩, 洪友士
core  

High-cycle and very-high-cycle fatigue behaviour of a titanium alloy with equiaxed microstructure under different mean stresses

, 2019
The fatigue behaviour of a titanium alloy Ti-6Al-4V with equiaxed microstructure (EM) under different values of tensile mean stress or stress ratio (R) was investigated from high-cycle fatigue (HCF) to very-high-cycle fatigue (VHCF) regimes via ...
潘向南, 洪友士
core   +2 more sources

Predicting Fatigue Life of 51CrV4 Steel Parabolic Leaf Springs Manufactured by Hot-Forming and Heat Treatment: A Mean Stress Probabilistic Modeling Approach

Metals
The longevity of railway vehicles is an important factor in their mechanical and structural design. Fatigue is a major issue that affects the durability of railway components, and, therefore, knowledge of the fatigue resistance characteristics of ...
Vítor M. G. Gomes, Miguel A. V. de Figueiredo, José A. F. O. Correia, Abílio M. P. de Jesus   +3 more
doaj   +1 more source

High-cycle and very-high-cycle fatigue of an additively manufactured aluminium alloy under axial cycling at ultrasonic and conventional frequencies

Along the building direction, the fatigue behavior of an additively manufactured (AM) aluminium (AlSi10Mg) alloy was investigated in high-cycle and very-high-cycle regimes by using conventionally electromagnetic resonance and ultrasonic vibration with ...
Pan, Xiangnan, Hong, Youshi
core   +2 more sources

Effect of low cycle fatigue pre-damage on very high cycle fatigue

, 2012
Carbon-manganese steel is often applied in components of pipes in nuclear plant. Ultrasonic fatigue tests following low cycle fatigue (LCF) cycles damaged are used to study the strength of very high cycle fatigure (VHCF).
Wang, Qingyuan, Bathias, Claude, Wagner, Danièle, Huang, Zhiyong   +3 more
core   +1 more source

Effects of specimen size and hot isostatic pressing on high-cycle and very-high-cycle fatigue of additively manufactured Ti6Al4V

Journal of Materials Research and Technology
This study investigates the effects of specimen size and hot isostatic pressing (HIP) on the high-cycle fatigue (HCF) and very-high-cycle fatigue (VHCF) performance of additively manufactured (AMed) Ti6Al4V.
Yu Xia, Xiangnan Pan, Aiguo Zhao, Youshi Hong   +3 more
doaj   +1 more source

Relating gigacycle fatigue to other methods in evaluating the inclusion distribution of a H13 tool steel

, 2007
Inclusions play a crucial role for the fatigue properties of high strength steel, but to find the largest inclusions by microscopy measurements large areas have to be examined.In this study ultrasonic gigacycle staircase fatigue testing has been used to ...
Kazymyrovych, Vitaliy,, Burman, Christer,, Ekengren, Jens,, Bergström, Jens,   +3 more
core   +1 more source