Volume 18, No. 6, 2021
“Analysis Of Unidirectional Glass-Epoxy Laminar Composite”
Gunale Rahul Bhaskarrao , Sarang P. Joshi
Abstract
As already discussed in many papers by authors, composite is mixture of two or more than two materials at micro level, which leads to form mixture of anisotropic material which despite this precise micro level mixing retains its uniqueness which are still physically distinct and mechanically separable from each other, and there is no chemical bond formation during the process of entire curing. Fibre, matrix and resin are few elements which can be added in to the list of such elements. The basic structure and properties of lamina/ply is virtue of percentage combination of all these elements added together. Properties of laminate is function of properties of lamina configure with definite fibre, matrix percentage and stacked in sequence with unique fibre orientation. A thing is very interesting to note, lamina which has its own properties and behaviour before stacking in to laminate structure changes after being the part of laminate and response of behaviour noted is completely different than previous one, so assumption of determining laminate properties from lamina properties do not stand strong and valid all the time. There are several parameters which keeps affecting performance and behaviour of lamina and those are, fibre orientation, fibre and matrix percentage, lamina thickness, processing parameters etc. the most behaviour dominating parameters are fibre orientation and percentage of fibre and matrix added in to the lamina structure. Fibres are strong and stiff in the direction of load acting, and so the orientation of lamina and thus of several such laminas maintained in to laminate structure to impart required strength to it. Lamina/ laminate strengths in various directions is base criterion of design, so the precaution is taken that load acting on laminate should not goes beyond ultimate limit to maintain safety of structure as long as it becomes part of an operation. Popularity of composite increases day by day, its functioning and applicability enable it to use almost in all field to the extent isotropic material could have been use hardly. Thus researcher keep emphasis to optimize the structure to enhance its applicability and use even high which was never before. Paper focusing on analysis of composites performed for monotonic or uni-axial loading. The characterization and behaviour of composite is studied in the current paper. This analysis is performed to check an applicability of composite which would enable its use in an aeronautical applications. Analysis focuses mainly on understanding the capacity of composite material which would make it more suitable and capable material for the use in aeronautical and relevant applciations. The paper is written to discuss analysed things of unidirectional composite laminar structure to judge its application versatility. Analysis discusses impacts of fibre orientation on stiffness components, stress, strain, off-axis engineering elastic properties etc. Analysis concludes few laminas associated parameters do not affected by ply orientation and remains same till failure but remaining are strongly affected as an effect of such orientation change.
Pages: 8969-8979
Keywords: Composite, lamina, laminate, orientation, & Engineering properties etc.