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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25 Apr 2004-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the results of an experimental study of fatigue in LIGA Ni micro-electro-mechanical systems (MEMS)/thin films produced by electroplating from a sulfamate bath at a current density of 50 milliamiami/cm2 were presented.
Abstract: This paper presents results of an experimental study of fatigue in LIGA Ni micro-electro-mechanical systems (MEMS)/thin films produced by electroplating from a sulfamate bath at a current density of 50 mA/cm2. Following a brief description of microstructure and micro-tensile properties, the results of stress-life (S-N) experiments are presented for specimens with thicknesses of 70 and 270 μm. Specimens with the thicker cross-sections (270 μm thick) are shown to have comparable fatigue resistance to annealed bulk Ni in the as-plated condition. The thinner specimens (70 μm thick) have comparable fatigue resistance to hardened Ni, and better fatigue resistance than the thicker samples. The underlying fatigue fracture modes are elucidated via scanning electron microscopy. The implications of the results are then discussed for the failure analysis of LIGA Ni MEMS structures.
82 citations
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TL;DR: In this article, a rotating bending fatigue test was carried out on austempered ductile iron containing 1.5 wt% nickel and 0.3 Wt% molybdenum, and the fatigue strength was correlated with the amount of retained austenite and its carbon content.
Abstract: Rotating bending fatigue tests were carried out on austempered ductile iron containing 1.5 wt% nickel and 0.3 wt% molybdenum. The ductile iron was austenitized at 900 or 1050 °C and then austempered at 280 or 400 °C for different lengths of time to obtain different microstructures. The fatigue strength was correlated with the amount of retained austenite and its carbon content, which were both determined by X-ray diffraction technique. While the tensile strength decreased with increasing retained austenite content, the fatigue strength was found to increase. Carbide precipitation was found to be detrimental to fatigue strength. Lower austenitizing temperature resulted in better fatigue strength.
82 citations
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TL;DR: In this paper, a study of delamination growth in HTA/6376C carbon fiber/epoxy laminates was conducted under static and fatigue loading at both ambient conditions and elevated temperature.
81 citations
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TL;DR: In this article, a carburized 316 stainless steel was studied under rotary bending in laboratory air and in 3% NaCl aqueous solution using materials with two different case depths.
81 citations
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TL;DR: In this paper, the fatigue behavior of a series of carbon/Kevlar-49/epoxy unidirectional hybrid composites has been established as a function of composition and of the ratio of the maximum to minimum stress in repeated tension and tension/compression cycling.
81 citations