Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Analysis of the influence of geometric arrangement in the modulus of elasticity of composite materials
Submission Author:
Twanny Cordeiro Lapczyk , PR , Brazil
Co-Authors:
Twanny Cordeiro Lapczyk, Aline Treml, Luís Henrique Chouay Dall' Agnese, Matheus Henrique Zanardini
Presenter: Matheus Henrique Zanardini
doi://10.26678/ABCM.COBEM2017.COB17-0923
Abstract
The composite material is that one formed by two or more phases, at a macroscopic level, whose performance becomes higher due to this combination. In this paper will be fabricated so-called laminate structures, formed by a thermorigid polymer matrix and reinforced by unidirectional continuous carbon fibers, through the process of hand lay up and vacuum bag. The laminates were made with three diffeent geometric arrangements, being 0º, 45° and 90º the selected angles, because in an orthotropic material the properties vary only in the range of 0° e 90°. For the analysis of the influence of the lamination angle on the longitudinal elastic modulus of the laminates, two experimental techniques were performed: a tensile mechanical test and the impulse excitation technique for each geometric arrangement variation. In this way, one test was destructive and the other non-destructive, being possible to compare the results obtained esperimentally with the developed analytical method, besides a comparison between the two techniques, to verify if the proces of manufacturing, sizing and cutting of the the samples occurred correctly. From the performed analyzes it was proven the great influence that the orientation of the laminate has on the modulus of longitudinal elasticity, having a decreasing bahavior according to the increase of the lamination angle, in addition, it was observed that the modulus decreases abruptly at low angles and becomes practically constant at high angles.
Keywords
Unidirectional continuous fibers laminate, composite material, Longitudinal modulus of elasticity, Hand lay up
