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2015, vol. 56, iss. 4, pp. 421-428
Micromechanical crack analysis of glass-epoxy laminated composites subjected to tension load
aUniversity of Belgrade, Faculty of Technology and Metallurgy
bVazduhoplovna akademija, Beograd
cUniversity of Belgrade, Faculty of Mechanical Engineering
dVŠSS Beogradska Politehnika, Beograd
Keywords: micromechanical analysis; glass-epoxy composite materials; tensile properties of glass-epoxy composite materials; tensile test of glass-epoxy composite materials
The main objective of this study is to determine tensile properties of the glass-epoxy polymer composite material. The material is glass fiber 280 g/m², 'twill woven' with 100 cm width, type - Interglas 92125, and epoxy resin type MGS L-135, where samples are molded using hand manual method with 35% fiber weight per volume. Orientations were 0/90° i ±45°. In accordance with appropriate standards, tensile strength and modulus of elasticity were determined. Beside the analysis of the results obtained during the experiment, micro-mechanical analysis of the tensile failure appearance and development was conducted based on the observed cracked surface, which led to a confirmation of all characteristic mechanisms and cracks expected for this type of material and study. Micromechanical analysis performed on the cracked surfaces of the investigated samples, has led to a definition of a structure which is more suitable for exploitation of this material in a presence of this type of external load.
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article language: Serbian
document type: Scientific Paper
DOI: 10.5937/ZasMat1504421M
published in SCIndeks: 11/06/2016

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