Topic
Fatigue limit
About: Fatigue limit is a research topic. Over the lifetime, 20489 publications have been published within this topic receiving 305744 citations. The topic is also known as: endurance limit & fatigue strength.
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TL;DR: In this paper, an analysis of the defects influence on fatigue behavior is performed on the basis of the initial stress intensity factor of the killer defects examined by SEM observations of the fracture surfaces.
84 citations
TL;DR: In this article, the authors demonstrate the effects of shallow corrosion pits up to 250μm deep on the initiation offatigue cracking in both plain and notched specimens of a low-alloy steel.
Abstract: The initiation of fatigue cracks at corrosion pits has been responsible for the failure of a wide range of engineering components The present work demonstrates the effects ofcorrosion pits up to 250μm deep on the initiation offatigue cracking in both plain and notched specimens of a low-alloy steel Fatigue strength can be reduced by as much as 70% due to the presence of such corrosion pits The concepts of linear elastic fracture mechanics are used in an attempt to describe the development and growth of fatigue cracks from shallow corrosion pits
84 citations
TL;DR: In this article, the effects of the as-built condition on the fatigue properties of an AlSi 10 Mg aluminium alloy manufactured by Selective Laser Melting (SLM) in different orientations were investigated.
84 citations
TL;DR: In this article, the results of an experimental programme oriented to the manufacturing and characterisation of nanocomposites based on epoxy resin modified with fumed silica nanoparticles (0.1, 0.3 and 0.5 ǫ ) were presented.
Abstract: The paper shows the results of an experimental programme oriented to the manufacturing and characterisation of nanocomposites based on epoxy resin modified with fumed silica nanoparticles (0.1, 0.3 and 0.5 vol.%) with different surface treatments (unmodified, AMEO and GLYMO). The resulting degree of dispersion and the interfacial adhesion were investigated by TEM and SEM. Previous tensile and fracture toughness properties are discussed together with new results on the fatigue behaviour under mode I loading. The fracture toughness K Ic turned out to be significantly increased and a positive trend towards the improvement in the crack propagation threshold under fatigue was observed.
84 citations
01 Jan 1990
TL;DR: FATIGUE as discussed by the authors is the progressive, localized, and permanent structural change that occurs in a material subjected to repeated or fluctuating strains at nominal stresses that have maximum values less than (and often much less than) the tensile strength of the material.
Abstract: FATIGUE is the progressive, localized, and permanent structural change that occurs in a material subjected to repeated or fluctuating strains at nominal stresses that have maximum values less than (and often much less than) the tensile strength of the material. Fatigue may culminate into cracks and cause fracture after a sufficient number of fluctuations. The process of fatigue consists of three stages: • Initial fatigue damage leading to crack initiation • Crack propagation to some critical size (a size at which the remaining uncracked cross section of the part becomes too weak to carry the imposed loads) • Final, sudden fracture of the remaining cross section
84 citations