Results 251 to 260 of about 180,338 (295)

Surface fatigue crack growth under variable amplitude loading

Engineering Fracture Mechanics, 2020
Abstract Plasticity-induced fatigue crack closure plays an important role in fatigue crack growth. Under fatigue loading with variable amplitude, however, the influence of fatigue crack closure along the crack front in three-dimensional cracked bodies is difficult to analyze.
Jiacai Zhu, Wei Guo, Wanlin Guo
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Fracture of Concrete under Variable Amplitude Fatigue Loading

ACI Materials Journal, 1996
The fracture response of concrete under low-cycle variable amplitude loading at frequencies up to 10 Hz was investigated. The applied loading history, selected to reflect earthquake loads on concrete dams, consisted of a basic sinusoidal oscillation interrupted by occasional spikes.
Slowik V., PLIZZARI, Giovanni, Saouma VE
openaire   +3 more sources

Alternative Fatigue Lifetime Prediction Formulations for Variable-Amplitude Loading

Journal of Solar Energy Engineering, 2002
Accurate prediction of lifetime is an increasingly important issue for wind turbine rotor blade materials. Coupon tests with the variable-amplitude standard loading sequences for wind turbines known as WISPER and WISPERX have indicated that the coupon lifetime can be overestimated by one or two orders of magnitude using conventional lifetime prediction
R. P. L. Nijssen, D. R. V. van Delft, A. M. van Wingerde   +2 more
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ASSESSING DELAMINATION GROWTH UNDER VARIABLE AMPLITUDE LOADS

2019
Delamination growth in simple laminate specimens appears systematic and thus should be predictable.
Loris Molent, Rhys Jones, Anthony Kinloch   +2 more
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Stochastic fatigue damage modeling under variable amplitude loading

International Journal of Fatigue, 2007
Abstract A general methodology for stochastic fatigue life prediction under variable amplitude loading is proposed in this paper. The methodology combines a nonlinear fatigue damage accumulation rule and a stochastic S–N curve representation technique to achieve this objective.
Y LIU, S MAHADEVAN
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Crack-tip stress distributions under variable amplitude loading

AIP Conference Proceedings, 2018
Near threshold fatigue crack response is extremely sensitive to load history. It is associated with the influence of near-tip stress on instantaneous resistance of crack tip surface layers to failure under atmospheric conditions. The paper deals with computational aspects of stress and strain distributions at the crack tip.
A. N. Savkin, A. A. Sedov, D. S. Denisevich, K. A. Badikov   +3 more
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Fatigue crack propagation under variable-amplitude loading

Strength of Materials, 1977
A finite-element analysis has been performed to investigate quantitatively the level at which fatigue crack surfaces come into contact during fatigue cycles. The results agreed well with experimental observations and suggest that quantitative design rules may be developed, based upon the crack-closure hypothesis.
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Variable Amplitude Loading on a Resonance Test Facility

Journal of ASTM International, 2004
Abstract The uncertainty in fatigue lifetime calculations brings up the necessity of experimental verification. Several efforts have been undertaken in the past to improve and introduce new test methods. An alternative method for variable amplitude loading using resonance test facilities is introduced and discussed.
S Pöting, M Traupe, J Hug, H Zenner
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Random Fatigue Damage Accumulation under Variable Amplitude Loading

53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference<BR>20th AIAA/ASME/AHS Adaptive Structures Conference<BR>14th AIAA, 2012
It is found and clarified in this paper that the classical random fatigue strength derived from P-S-N curves is only valid under constant amplitude loading, and as a result, the classical fatigue reliability stress-strength interference model based on such kind of random fatigue strength is also valid under constant amplitude loading only.
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DURABILITY TESTS: statistical analysIs for variable amplitude loads

Transactions of the Canadian Society for Mechanical Engineering, 2017
The reduced time available for product evolution has forced original equipment manufacturers and their suppliers to develop new components and subsystems more rapidly, while taking into consideration the reliability of the final product in terms of its durability.
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