Results 241 to 250 of about 33,354 (290)

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
core   +4 more sources

Some of the next articles are maybe not open access.

Related searches:

Estimation of the opening load under variable amplitude loading

Fatigue & Fracture of Engineering Materials & Structures, 2019
AbstractThe crack opening/closure load concept is widely used to justify the fatigue crack growth behaviour with different load ratios and the load interaction effects. Many experimental techniques have been proposed to measure crack opening/closure load, and amongst them, compliance offset methods are widely used for their simplicity and consistency ...
Belen Moreno, Pablo Lopez‐Crespo, Alejandro S. Cruces, Jaime Dominguez   +3 more
openaire   +1 more source

Multiaxial Fatigue Under Variable Amplitude Loads

Journal of Engineering Materials and Technology, 1999
Multiaxial fatigue under variable amplitude loading is investigated using Kandil et al.’s parameter, rainflow cycle counting on the shear strain history, and the Miner-Palmgren damage rule. Fatigue data are obtained on tubular specimens of S45C steel under proportional and nonproportional tension-torsion loading.
Kim, KS, Park, JC, Lee, JW
openaire   +2 more sources

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
openaire   +1 more source

A criterion for omission of variable amplitude loading histories

International Journal of Fatigue, 1986
Abstract The standard random loading sequence EC9 and the cycle-by-cycle sequences TWIST and MiniTWIST have been edited by a procedure based on notch or local (hot spot) stress, and the results of tests on specimens of FE 690 and AIMg4.5Mn using original and edited spectra are compared.
P HEULER, T SEEGER
openaire   +1 more source

Fatigue Damage under Variable Amplitude Loads

Journal of Structural Engineering, 1988
A truck passing over a bridge induces loads which vary with time. To test the ability of available analytical techniques to estimate fatigue life under such loading, crack growth rate tests are conducted with eleven compact‐type specimens using constant and variable amplitude load‐time histories.
Farrel J. Zweraeman, Karl H. Frank
openaire   +1 more source

Fatigue Reliability: Variable Amplitude Loading

Journal of the Structural Division, 1982
Models which designers use to predict fatigue under variable amplitude and random loading are summarized. Basic terminology associated with random process theory is presented. Models for computing fatigue damage associated with various statistical distributrions of stress ranges are reviewed.
openaire   +1 more source

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
openaire   +1 more source

The influence of compression loads and of on the crack propagation under variable amplitude loading

Engineering Fracture Mechanics, 1984
Abstract During the past 10–15yr the development of crack growth prediction models for variable amplitude loading conditions has reached a high standard. However, there still exist some uncertainties regarding the quantitative effect of compression loads and of the variation of the stress intensity with increasing crack length on the crack ...
R. Marissen, K.H. Trautmann, H. Nowack
openaire   +1 more source

Effect of Variable Amplitude Loading in Nitinol Fatigue

2019
In this investigation, diamond-shaped samples laser-cut from nitinol tubing were used to investigate the effect of variable amplitude fatigue loading. Alternating strain amplitudes of 0.30 %, 0.35 %, and 0.40 % were applied with periodic high strain amplitude of 0.70 %. The high strain was applied one time for every 40 low strain cycles.
Brian D. Choules, Alexandra L. Lewis, Brandon G. Gulker, Justin M. Metcalf, Jace D. Kelley   +4 more
openaire   +1 more source