MATEC Web Conf.
Volume 165, 201812th International Fatigue Congress (FATIGUE 2018)
|Number of page(s)||6|
|Section||Fatigue of Composites|
|Published online||25 May 2018|
Rapid evaluation of S-N curve for composite laminates on thermographic approach
Univ. Toulouse, IUT Tarbes, ICA, 1 rue Lautréamont, F-65016 Tarbes, France
2 Univ. Toulouse, INP-ENIT, LGP, 47 avenue d’Azereix, F-65016 Tarbes, France
* Corresponding author: firstname.lastname@example.org
A new fatigue life prediction model is developed for composite laminates based on both infrared thermographic data and stiffness degradation process. The fatigue limit is firstly determined by the improved thermographic method and then a two-parameter function is proposed to describe the normalized stiffness degradation of specimens subjected to various maximum loading stresses. These two parameters can be calibrated by the stiffness degradation data and stabilized temperature data. Thereafter, the calibrated model can be used to predict S-N curve. The proposed model is applied the experimental data from literature and the results show that the predicted S-N curve has a well agreement with the experimental one.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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