Analysis of Size Effect in High-Cycle Fatigue for EN AW-6063

Tomaszewski, Tomasz; Sempruch, J.

doi:10.4028/www.scientific.net/ssp.224.75

Cited by 13 publications

(12 citation statements)

References 14 publications

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“…The study [8] discusses that along with the strictly experimental methods (considered accurate) and the analytical methods (burdened with uncertainty as shown below) a hybrid solution is available by combining the available knowledge on analytical and experimental methods. Similar approach is discussed in study [9]. Fig.…”

Section: Tab 1 Guidelines For Selection Of Recommended Number Of Spementioning

confidence: 90%

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Experimental Method for Plotting S-N Curve with a Small Number of Specimens

Strzelecki

Sempruch

2016

Polish Maritime Research

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The study presents two approaches to plotting an S-N curve based on the experimental results. The first approach is commonly used by researchers and presented in detail in many studies and standard documents. The model uses a linear regression whose parameters are estimated by using the least squares method. A staircase method is used for an unlimited fatigue life criterion. The second model combines the S-N curve defined as a straight line and the record of random occurrence of the fatigue limit. A maximum likelihood method is used to estimate the S-N curve parameters. Fatigue data for C45+C steel obtained in the torsional bending test were used to compare the estimated S-N curves.For pseudo-random numbers generated by using the Mersenne Twister algorithm, the estimated S-N curve for 10 experimental results plotted by using the second model, estimates the fatigue life in the scatter band of the factor 3. The result gives good approximation, especially regarding the time required to plot the S-N curve.

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Section: Tab 1 Guidelines For Selection Of Recommended Number Of Spementioning

confidence: 90%

“…A predefined number of specimens was used in Model I, [9,12,13]. No explicit number of tests was specified for Model II.…”

Section: Small Number Of Specimens To Plot the S-n Curvementioning

confidence: 99%

Experimental Method for Plotting S-N Curve with a Small Number of Specimens

Strzelecki

Sempruch

2016

Polish Maritime Research

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“…We first consider the uniaxial experiments reported in Tomaszewski et al, 47 in which data under both monotone loading and cyclic loading were presented for aluminum alloy EN AW‐6063. Details for the cyclic test are as follows: the uniaxial sample made of aluminum alloy EN AW‐6063 was tested with the axial tensile load from 0.1

A_{0}

A_{0}

and then back to

0.1 A_{0}

.…”

Section: Numerical Examplesmentioning

confidence: 99%

High‐efficiency algorithms for simulating metal failure effects under multiaxial repeated loadings

Zhan

Wang

Bruhns

et al. 2021

Numerical Meth Engineering

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High-efficiency algorithms are proposed for numerically integrating elasto-plastic rate equations for the purpose of simulating metal failure effects under repeated loading conditions. Results are obtained with a newly established elasto-plasticity model which can automatically simulate both low and high cycle fatigue failure effects, with reference to neither damage-like variables nor ad hoc failure criteria. Novelties are incorporated in a few respects. First, multiaxial loading processes with arbitrarily changing principal stresses and axes can be treated in a broad sense beyond usually treated proportional loading cases. Second, by means of the commonly used J 2 -invariant of the deviatoric stress, multiaxial loading cases can be directly treated just as in the uniaxial loading case. Third, high cost in time consumption can be considerably reduced in evaluating both low and high cycle failure effects. Numerical examples are presented for simulating uniaxial and multiaxial fatigue failure effects and simulation results are in good agreement with experimental data. Results show that the computation speed with the new algorithms exceeds 600 times faster than usual integration algorithms.

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“…[4] Unauthenticated Download Date | 5/11/18 2:08 AM For instance, Ref. [8] presents the effect of the size of the tested object on its fatigue life.…”

Section: Introductionmentioning

confidence: 99%

Comparing Guidelines Concerning Construction of the S-N Curve within Limited Fatigue Life Range

Strzelecki

Sempruch

Nowicki

2015

Polish Maritime Research

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The article collates guidelines concerning experimental construction of the S-N fatigue curves within a limited fatigue life range. An attempt is made to compare these guidelines, based on experimental data recorded during rotating bending of a notched specimen made of 42CrMo4. The recorded differences in fatigue life values between the constructed curves reach the maximum of 12.2%. According to the above guidelines, the number of tests in particular test series varies from 6 to 28. Based on the performed analysis a conclusion was made that the increase in the number of tests leads to the increase of accuracy but, on the other hand, remarkably increases the time of the experiment and

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Analysis of Size Effect in High-Cycle Fatigue for EN AW-6063

Cited by 13 publications

References 14 publications

Experimental Method for Plotting S-N Curve with a Small Number of Specimens

Experimental Method for Plotting S-N Curve with a Small Number of Specimens

High‐efficiency algorithms for simulating metal failure effects under multiaxial repeated loadings

Comparing Guidelines Concerning Construction of the S-N Curve within Limited Fatigue Life Range

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