Mechanical Properties of Glass Fiber Composites Reinforced by Textile Fabric
Environment. Technology. Resources : Proceedings of the 10th International Scientific and Practical Conference 2015
Artūrs Mačanovskis, Andrejs Krasņikovs, Olga Kononova, Galina Harjkova, Vladislavs Jevstigņejevs

Interest to structural application of textile reinforced polymer matrix composite materials (CM) is growing during last years. In different branches of machine building, aerospace, automotive and others industries we can find structural elements preferably be produced using such reinforcement. At the same time, such materials are exhibiting elastic and strength properties scatter. Present work is devoted to structural modeling of the composite material with textile (knitted) reinforcement having the goal to predict such materials strength and behavior under applied mechanical loads. In the framework of the present investigation, we observe yarn penetrated by a resin in a composite as a reinforcing “macro” fiber. Such “macro” fiber mechanical properties were measured experimentally, for this purpose was produced and was tested by tension until fracture fiber samples, having different length. Then was elaborated and was realized structural strength probabilistic model. In the textile geometry, was picked out repeating structural element – polymer matrix volume with two curved “macro” fiber’s chunks inside it. Complete composite material volume is possible to represent as a set of repeating structural elements. External loads application leads to disperse structural elements failure. Neighboring to ruptured elements are overloaded leading to higher probability to fail for them. Using FEM was modeled stress state in “macro” fibers inside CM. Then, was numerically obtained stress distribution in composite material, having different number of broken loops. Probabilities of different numbers of failed elements were calculated. Strength probability function, based on Weibull approach was obtained. CM samples were tested under tension and obtained results were compared with numerical modeling as well as were analyzed.


Keywords
Elastic properties, glass fiber, polymer matrix, yarn.
DOI
10.17770/etr2015vol1.208
Hyperlink
http://journals.ru.lv/index.php/ETR/article/view/208

Mačanovskis, A., Krasņikovs, A., Kononova, O., Harjkova, G., Jevstigņejevs, V. Mechanical Properties of Glass Fiber Composites Reinforced by Textile Fabric. In: Environment. Technology. Resources : Proceedings of the 10th International Scientific and Practical Conference, Latvia, Rēzekne, 18-20 June, 2015. Rezekne: Rezekne Higher Education Institution, 2015, pp.133-138. ISBN 978-9984-44-171-9. ISSN 1691-5402. e-ISSN 2256-070X. Available from: doi:10.17770/etr2015vol1.208

Publication language
English (en)
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