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Numerical Determination of Fatigue Threshold from CTOD

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Abstract:

The experimental procedure to obtain valid and comparable values of ΔKth is laborious and time consuming. The objective of this work is to determine ΔKth using a numerical approach. The CTOD is plotted versus load, and the fatigue threshold corresponds to the onset of plastic deformation. A parametric study was developed in order to understand the effect of material parameters on ΔKth.

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Periodical:

Solid State Phenomena (Volume 258)

Pages:

290-293

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.258.290

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Online since:

December 2016

Authors:

Daniel Camas*, Pedro Loureiro, Pedro Prates, Fernando Antunes

Keywords:

Crack Tip Opening Displacement, Fatigue Threshold, Finite Element Method

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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