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 May 2006-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the authors used the electron back scattering diffraction technique to reveal changes of bulk microstructure due to cyclic loading and minor changes of dislocation microstructures were detected by transmission electron microscopy, which was attributed to high stability of the grain structure and lower purity of the examined ultrafine-grained copper.
Abstract: Fatigue lifetime under stress control of ultrafine-grained Cu of 99.9% purity prepared by equal channel angular pressing is shown to exceed that of conventionally grained cold worked counterparts by a factor of 1.7 in the low-, high- and very-high-cycle region. The electron back scattering diffraction technique did not reveal changes of bulk microstructure due to cyclic loading. Minor changes of dislocation microstructure were detected by transmission electron microscopy. Qualitative change from moderate cyclic hardening to cyclic softening was observed with increasing stress amplitude. Comparison of S–N data with those available in literature shows substantially higher lifetime of the material studied in this work in the high- and very-high-cycle region. This effect is attributed to the high stability of the grain structure and lower purity of the examined ultrafine-grained copper.
154 citations
TL;DR: In this paper, the fatigue properties of pure metals (Al, Ti, Ni and Cu) produced via equa-channel angular pressing (ECAP) are analyzed by means of stress-controlled tests and the results compared with those of the micro-crystalline counterpart.
154 citations
TL;DR: In this article, Gerber, Dietman, Goodman, Soderberg, and Sermanet extended the critical plane approach to multiaxial fatigue conditions, and the reliability and accuracy of the multiaxonial fatigue criteria were checked in the presence of high values of the ratio between the maximum normal stresses and the shear stress amplitudes relative to the critical planes, which has an intrinsic threshold value over which its use is not justified.
154 citations
TL;DR: In this article, an experimental study and theoretical analyses on the monotonic and fatigue performance in bending of a polyvinyl alcohol (PVA) fiber-reinforced engineered cementitious composite (ECC) overlay system is investigated.
154 citations
TL;DR: In this article, the static and fatigue performance of reinforced concrete beams strengthened with externally bonded carbon-fiber-reinforced plastic (CFRP) sheets was investigated. But the main parameters in the static test study were the concrete compressive strength, the number of CFRP laminates, and the placement of reinforcement reinforcement.
Abstract: The paper presents the results of a study involving the static and fatigue performance of reinforced concrete beams strengthened with externally bonded carbon-fiber-reinforced plastic (CFRP) sheets The main parameters in the static test study were the concrete compressive strength, the number of CFRP laminates, and the placement of CFRP reinforcement The static test program shows that the application of CFRP to reinforced concrete beams results in increased strength and enhanced performance Accelerated fatigue testing is performed on several specimens receiving various amounts of the CFRP lamination system, including one member that is fatigued for over half the expected fatigue life, then rehabilitated with the CFRP, and fatigued again until failure Comparisons are made for the standard section and equivalent sections with two and three layers of CFRP involving the improvements in fatigue behavior, stiffness, and capacity The results from the fatigue study indicate that fatigue life of reinforced co
153 citations