Abstract
In this paper a tensile characteristics of filament-wound glass fiber-aramid fiber/epoxy resins hybrid composites and glass fiber-two carbons fibers/epoxy resins hybrid composites are presented. Basic terms about hybride composite materials (origin, reasons for manufacturing, advantages, definitions, levels of hybridization, modes of classifications, types, categorization, and possible interactions between constituents) and used reinforcements and matrices are described. For a manufacturing of NOL rings four reinforcements (glass fiber, polyamide aromatic fiber and two carbon fibers) and two matrices (high and moderate temperature curing epoxy resin system) are used. Based on experimentally obtained results, it is concluded that hybride composite material consisting of carbon fiber T800 (67 % vol) and glass fiber GR600 (33 % vol) impregnated with epoxy resin system L20 has the highest both the tensile strength value and the specific tensile strength value. The two lowest values of both tensile strength and the specific tensile strength have hybrid material containing aramide fiber K49 (33 % vol) and glass fiber GR600 (67 % vol) and epoxy resin system 0164 and hybrid NOL ring with wound carbon fiber T300 (33 % vol) and glass fiber GR600 (67 % vol) impregnated with the same epoxy resin system. This investigation pointed out that increasing the volume content of aramide fiberK49, carbon fiber T300 and carbon fiber T800 in appropriate hybrid composites with glass fiber GR600 increases both the tensile strength value and the specific tensile strength value and decrease the density value, no matter the used epoxy resin system.
Highlights
EACH tekst. of design stages requires decisions about material from which the product is to be made and the process for making it
Dependence of tensile strength and specific tensile strength of hybrid NOL rings marks (K49/GR600 + K49), (Т300/GR600 + Т300) and (Т800/GR600 + Т800), all impregnated with epoxy resin systems 0164 and L20, versus volume content of aramide roving K49, carbon roving T300 and carbon roving T800, respectively, are presented in following Figures
Hybrid composite material consisting of carbon fiber T800 (67 % vol) and glass fiber GR600 (33 % vol) impregnated with epoxy resin system L20 has the highest both the tensile strength value and the specific tensile strength value of all six hybride types tested in this investigation
Summary
EACH tekst. of design stages requires decisions about material from which the product is to be made and the process for making it. In most cases the inorganic part provides mechanical strength and an overall structure to the natural objects while the organic part delivers bonding between the inorganic building blocks and/or the soft tissue Typical examples of such materials are bone, or nacre. Summerscales defined production of hybrid composite materials as incorporation of two or more fibers within a single matrix or it may be two resin systems, e.g. an interpenetrating network [14]. Yamada et al defined hybrid materials as mixtures of two or more materials with new properties created by new electron orbitals formed between each material, such as covalent bond between polymer and silanol molecular in inorganic/organic hybrids. The PHCM is made up of layers alternating in a definite order from fibers of different types (e.g., part from carbon plastic or organic fiberreinforced plastic). He proposed categorization of hybrid materials: 1. Composites: Mixture of materials consisting of matrix and micron-level dispersion
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