Research Article | OPEN ACCESS
Long Term Behavior of Composite Material Polyester-Wood Reinforced Glass Fiber
1E.T. Olodo, 2F. Niang, 3E.C. Adjovi and 4V.A. Kopnov
1University Institute of Technology IUT, University of Abomey-Calavi, Benin
2University Institute of Technology IUT/UT, University of Thies, Senegal
3Polytechnic School of Abomey EPAC, University of Abomey-Calavi, Benin
4Military Academy Piotr Veleky, Moscow, Russia
Research Journal of Applied Sciences, Engineering and Technology 2013 2:196-201
Received: June 07, 2012 | Accepted: December 06, 2012 | Published: June 10, 2013
Abstract
If the industry generally considers composite materials as potentially interesting, the lack of durability makes their often limited employment. Indeed, the design of composite structures often requires taking account of the long-term behaviour under various types of complex solicitations. This study is based on the development of a methodology for modeling the long term behavior under constant load for multilayer composite structures subjected to complex solicitations. This study is on the evaluation of the long-term behaviour of tri-layers glass/polyester-wood composite material. The objective is the evaluation of the long term strength of this material by the Goldenblat-Kopnov criterion. The studied model is an orthotropic tri layer plate of sandwich type with upper and lower flanges (skins) are in composite material glass/polyester KACT-B and the intermediate layer (soul) is pine wood. The character of loading of the plate is reflected in the model by the functions &sigmaik(&xi), &sigmamn(&xi) which can be of different natures. For example, to load in the long term by constant constraints in time (the weight own element for example), we will have: &sigmaik = const, &sigma mn = const. The results of the calculations show that, for this type of material, the conditions of strength to the dangerous points of the plate are met.
Keywords:
Goldenblat-Kopnov criterion, long term strength, tri layers composite,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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