Results 51 to 60 of about 2,412 (266)

FATIGUE BEHAVIOR AND MECHANISM OF FV520B-I OWING TO THE EFFECT OF LOADING FREQUENCY ON THE FATIGUE PROPERTY IN HCF AND VHCF REGIME

open access: yesArchives of Metallurgy and Materials, 2023
Fatigue property of FV520B-I is affected by the ultrahigh loading frequency significantly, and the ultrasonic fatigue experimental data can’t be employed directly to analyze the fatigue failure in the actual remanufacturing engineering.
Jun Wang   +6 more
semanticscholar   +1 more source

The Effect of Microstructure on the Very High Cycle Fatigue Behavior of Ti-6Al-4V Alloy

open access: yesMetals
Crack initiation plays a major role in very high cycle fatigue (VHCF) life, and the initiation of cracks is related to slip behavior. There is a need for improvement in the understanding of the influence of Ti-6Al-4V microstructures on VHCF performance ...
Mingyang Yuan   +4 more
doaj   +1 more source

Fatigue property and failure mechanism of TC4 titanium alloy in the HCF and VHCF region considering different forging processes

open access: yesMaterials Research Express, 2021
Based on the self-built three point bending ultrasonic fatigue test system, fatigue behavior of TC4 titanium alloy after different forging processes in high cycle fatigue (HCF) and very high cycle fatigue (VHCF) regimes was discussed in this paper.
Wenbin Cui   +5 more
doaj   +1 more source

VHCF, Tribology Characteristics and UNSM Effects of Bainite and Martensite Spring Steels

open access: yesMetals, 2022
It has been reported that the duplex bainite microstructure obtained by austempering (AT) shows higher strength, ductility and impact toughness than quench and tempered (QT) martensite structure in SAE9254 spring steel.
Min Soo Suh   +3 more
doaj   +1 more source

Guided bending experiment for the characterisation of CFRP in VHCF-loading

open access: yesPolymer Testing, 2016
Abstract The effective experimental characterisation of the damage and failure behaviour of polymer based composites under VHCF-loading depends directly on the development of reliable accelerated fatigue test methods. Here, a guided-bending fatigue experiment in forced excitation is proposed.
I. Koch   +4 more
openaire   +1 more source

Effect of Surface Mechanical Attrition Treatment on the very high cycle fatigue behavior of TC11

open access: yesMATEC Web of Conferences, 2018
As an important engine component material, TC11 (Ti-6.5Al-3.5Mo-1.5Zr-0.3Si) titanium alloy is subjected to high frequency cyclic loading and its failure occurs beyond 109 cycles.
Gao Tao   +3 more
doaj   +1 more source

Redesigning axial-axial (biaxial) cruciform specimens for very high cycle fatigue ultrasonic testing machines

open access: yesHeliyon, 2017
The necessity to increase performances in terms of lifetime and security in mechanical components or structures is the motivation for intense research in fatigue. Applications range from aeronautics to medical devices.
Diogo Montalvão, Andrew Wren
doaj   +1 more source

FATIGUE BEHAVIOR OF TWO-PHASE TITANIUM ALLOY IN VHCF REGIME

open access: yes, 2017
This paper is focused on fatigue crack initiation and early growth in two-phase titanium alloy VT3-1 (similar to Ti-6Al-4V) under VHCF loads. The material was produced by two different processes: forging and extrusion. Each kind of material was investigated under three different loading types (push-pull, pull-pull and fully reversed torsion).
Nikitin, Alexander   +2 more
openaire   +3 more sources

Comparison of SP, SMAT, SMRT, LSP, and UNSM Based on Treatment Effects on the Fatigue Properties of Metals in the HCF and VHCF Regimes

open access: yesMetals, 2022
This paper aims to provide a better understanding regarding the effects of shot peening (SP), surface mechanical attrition treatment (SMAT), laser shock peening (LSP), surface mechanical rolling treatment (SMRT), and ultrasonic nanocrystal surface ...
Rui Chen, H. Xue, Bin Li
semanticscholar   +1 more source

A Surrogate Model for Stability Assessment of Two‐Layered Cohesive Slopes

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT This paper introduces a novel surrogate model for rapid stability evaluation of two‐layered cohesive slopes under undrained conditions. The model eliminates the need for iterative calculations and slip surface searches, allowing for fast and accurate stability assessments without reliance on advanced numerical tools. The formulation is derived
Naloan Coutinho Sampa   +1 more
wiley   +1 more source

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