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Fatigue damage accumulation in aluminum 7050-T7451 alloy subjected to block programs loading under step-down sequence
(Elsevier B.V., 2010-01-01)
In this paper the fatigue damage accumulation under block program loading is investigated. Alternative flexion bending fatigue tests with a single change in stress amplitude are performed at room temperature for step-down ...
Effects of electroplated zinc-nickel alloy coatings on the fatigue strength of AISI 4340 high strength steel
(2005-12-01)
It is well known that fatigue behaviour is an important parameter to be considered in mechanical components subjected to constant and variable amplitude loadings. In combination with corrosion phenomenon, fatigue effects ...
An investigation of electrolytic surface damages and electroplated crhomium effects on fatigue behavior of high strength steel
(2001-12-01)
Fatigue crack initiation occurs at the surface, although sub surface nucleation has also been reported. Localized imperfections like inclusions close to surface and surface small pits can result in crack sources. Coatings ...
FATIGUE PROPERTIES OF MACHINED SPECIMENS FROM CAST AND FORGED RAILROAD WHEELS
(Inegi-inst Engenharia Mecanica E Gestao Industrial, 2012-01-01)
The worldwide tendency of railways is the high load per wagon in cargo transport and high speed in the passenger sector. In both situation the wheel is strongly required, especially in respect of fatigue, which have being ...
Investigation of the damage and fracture of Ti-6Al-4V titanium alloy under dwell-fatigue loadings
(2021-01-01)
Ti-6Al-4V alloy turbine components for aeronautical applications operate at a steady state after reaching the maximum stress during each duty cycle. The load holds combined with the fatigue process causes a phenomenon ...
Analyses of fatigue data in 4340 high strength steel after cadmium electroplating
(Technical Research Centre Finland, 1998-01-01)
Bending fatigue tests were carried out to clarify the effects of heat treatment parameters: temperature and time after cadmium electroplating on a high strength steel, to avoid hydrogen embrittlement. Temperatures heat of ...
Effect of shot peening on fatigue behavior of AISI 4340 in different loading conditions
(2016-01-01)
Shot peening is a method widely used to improve the fatigue strength of materials, through the creation of a compressive residual stress field (CRSF) in their surface layers. In the present research the gain in fatigue ...
INFLUENCE OF HVOF COATING ON THE FATIGUE STRENGTH OF 15-5 PH STAINLESS STEEL
(Trans Tech Publications Ltd, 2014-01-01)
Structural component failures due to cyclic loading are associated to surface damage of materials and its interaction with environment. Fatigue failure occurs with stresses below the yield strength of each material and is ...
Study of the phenomena of fatigue using the finite element method
(2007-12-01)
About 99% of mechanical failures are consequence of the phenomena of fatigue, which consists on the progressive weakening of the resistant section of a mechanical component due to the growing of cracks caused by fluctuating ...
DWELL-FATIGUE INFLUENCE ON THE RELIABILITY OF Ti-6Al-4V TITANIUM ALLOY AEROSPACE COMPONENTS
(Inegi-inst Engenharia Mecanica E Gestao Industrial, 2020-01-01)
The Ti-6Al-4V titanium alloy is applied in disks and propellers of jet engines. In operation, these components are subject to the combination of dynamic and constant loadings. The dwell-fatigue loading is a result of the ...