نتایج جستجو برای: fatigue loading

تعداد نتایج: 143117  

2017
Zhao Fang Aiqun Li Wanrun Li Sheng Shen

Welded beam-to-column connections of high-rise steel structures are susceptive to fatigue damage under wind loading. However, most fatigue assessments in the field of civil engineering are mainly based on nominal stress or hot spot stress theories, which has the disadvantage of dependence on the meshing styles and massive curves selected. To address this problem, in this paper, the equivalent s...

2017
Kristine M. Jespersen Lars P. Mikkelsen

The data published with this article are high resolution X-ray computed tomography (CT) data obtained during an ex-situ fatigue test of a coupon test specimen made from a non-crimp fabric based glass fibre composite similar to those used for wind turbine blades. The fatigue test was interrupted four times for X-ray CT examination during the fatigue life of the considered specimen. All the X-ray...

2014
ARTHUR J McEVILY ROBERT P WEI A. J. McEvily R. P. Wei

The development and current state-of-the-art in fracture mechanics in relation to studies of environment-enhanced fatigue-crack growth (corrosion fatigue) and fatigue-crack growth per se are reviewed. Patterns of response of materials to different loading and environmental conditions are considered in terms of the probable mechanisms for environmental embrittlement. The usefulness of the fractu...

Journal: :Frattura ed Integrità Strutturale 2019

2014
Xi-Shu Wang Xing-Wu Guo Xu-Dong Li Dong-Yun Ge

In this paper, rotating bending fatigue tests of 2024-T4 Al alloy with different oxide coatings were carried out. Compared to the uncoated and previously reported oxide coatings of aluminum alloys, the fatigue strength is able to be enhanced by using a novel oxide coating with sealing pore technology. These results indicate that the better the coating surface quality is, the more excellent the ...

2012
Peng Tong Despina Louca Gongyao Wang Peter K. Liaw Yoshihiko Yokoyama Anna Llobet Hiroshi Kawaji Yiming Qiu Yunfeng Shi

The effect of fatigue on ZrCuAl amorphous metals induced by mechanical cyclic loading is investigated using inelastic neutron scattering and the pair density function analysis of neutron diffraction data. With cooling, the local atomic structure undergoes reorganization under fatigue that is directly related to the number of fatigue cycles. Also under fatigue, suppression in the atomic dynamics...

Journal: :Bone 2007
Helene Follet Jiliang Li Roger J Phipps Siu Hui Keith Condon David B Burr

PURPOSE The purpose of this study was to determine whether bisphosphonate treatment can prevent or delay osteocyte apoptosis in a cyclic fatigue animal model and if there are differences between two different bisphosphonates in their effects on osteocyte apoptosis. INTRODUCTION Fatigue loading induces microdamage in long bones in rats and causes osteocyte apoptosis. In vitro data suggest that...

Journal: :Journal of the Society of Naval Architects of Japan 1985

ژورنال: مهندسی دریا 2004
Aghakoochak, Ali Akbar, فتحی, علی,

In order to predict the residual life of offshore platforms and establish efficient schedule for underwater inspection and repair, it is necessary to estimate the fatigue crack growth rate in tubular joints properly. Linear Elastic Fracture Mechanics and Stress Intensity Factor are applicable tools for evaluating growth rate of existing fatigue cracks in offshore tubular joints. In the past sev...

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