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Fatigue

WCFA workshop on Design and Fatigue of Weldments

Submitted by pragtic on
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This is the second announcement about the upcoming Workshop on Computational Fatigue Analysis 2017, this year dedicated to Design and Fatigue of Weldments (WCFA2017-DFW - http://www.pragtic.com/DFW.php). The workshop is held in Prague, Czech Republic in November 13-16, 2017. The key lecturer, who guides the audience through various issues of the fatigue analysis in welds, is Dr Zuheir Barsoum from KTH - Royal Institute of Technology in Sweden.

Susmel-Papuga sharp controversy about multiaxial fatigue criteria

Submitted by Mike Ciavarella on
research
Fatigue
multiaxial fatigue
Failure Criteria

I recently came across this sharp controversy between Papuga and Susmel on multiaxial fatigue criteria.  Papuga accuses Susmel of "picking up" data that he likes from the literature, disregarding other data... And of having some constants in the criteria that are set a posteriori as fitting parameters.   Do you know how this ended up?  Anyone else partecipated to the debate?

 

In Memoriam: Dr Louis Cloutier (1936-2017)

Submitted by Alain Cardou on
industry
overhead electrical conductors
Fatigue
Aeolian Vibration

My friend and former colleague, Dr. Louis Cloutier, passed away on February 26. A long time Hydro-Quebec engineer, among other achievements, he will be remembered for his major contribution to the solution of electric power transmission mechanical problems, most notably to Aeolian vibration control, and related conductor fatigue.

A simple finding on variable amplitude (Gassner) fatigue SN curves obtained using Miner’s rule for unnotched or notched specimen

Submitted by Mike Ciavarella on
research
Fatigue
variable amplitude
notches
critical distance method

We provide a very simple result for a problem which has been often neglected (variable amplitude loading) in academia, but which is of paramount importance in real engineering situations, where fatigue is almost never "constant amplitude".

We found few cases where we could check this extremely simple result, but it worked very well.  We would welcome further verifications.

The paper is in press here.

1 PhD and 2 Postdoc positions in composites and 3D printed materials @ Ghent University (Belgium)

Submitted by wvpaepeg on
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phd
postdoc
UGent
Ghent University
Composites
3D printing
Fatigue
NDT

One PhD (4 years) and two Postdoc (3 years) vacancies are available in the composites research group at Ghent University in Belgium. The different open positions deal with nondestructive testing methods for composites inspection (vibration/thermography) and fatigue of 3D printed metals. More information can be found on http://www.composites.ugent.be/PhD_job_vacancies_PhD_job_positions_comp….

Which theory Abaqus' Contour Integral for the determination of SIFs is based on?

Submitted by havelmay on
ABAQUS
Contour integral
J integral
fracture mechanics
Fatigue

I am actually using Abaqus' Contour Integral for the determination of stress intensity factors. But I do not know, which theory it is based on. Is it the same like the path-independent determination of J integral? Or is there a difference?

Fatigue crack propagation

Submitted by Lazuardi Pujilaksono on
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Hi, I'm trying to perform a supposedly-simple experiment on fatigue crack propagation of UHMWPE. I use a compact-tension specimen on a servopulser hidraulic testing machine. I will try to do the experiment on a fix Pmax with a varied force ratio (R) from 0.1 to 0.5. I'm having trouble in deciding the maximum force Pmax. How does one decide the amount of force applied for FCP testing? Calculation steps and so on.

WCFA2016-VFA – Workshop on Vibration Fatigue Analysis

Submitted by pragtic on
conference
Fatigue
analysis
vibration
software
PSD
power spectral density

Dear iMechanicians,

I would like to inform you about the workshop WCFA2016-VFA, which is this year organized with the focus set on Vibration Fatigue Analysis. The workshop will be held at the Czech Technical University in Prague, Czech Republic from November 8 to November 10, 2016. The introductory lessons in the first day will be presented by Prof Darrell Socie, Prof Milan Ruzicka and Dr Jan Papuga, while the main topic - Vibration Fatigue Analysis - will follow in next two days and will be covered by Dr Neil Bishop.

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