A Comparative Study of the Physical, Mechanical and Thermomechanical Behavior of GFRP Composite Based on Fabrication Techniques

다국어 초록 (Multilingual Abstract)

The present study investigates the effect of fabrication techniques on the mechanical and thermo-mechanicalbehavior of bi-directional woven glass fiber epoxy composite for wind turbine blade application. The composites arefabricated by Vacuum Assisted Resin Transfer Molding (VARTM) and hand lay-up molding (HLM) techniques to identifythe optimal performance output. The physical, mechanical and thermo-mechanical properties of the composites are evaluatedfor the samples fabricated by both the tecniques. It is observed that tensile strength, inter-laminar shear strength (ILSS) andflexural strength of the composites fabricated by VARTM technique are 405.62 MPa, 23.35 MPa and 239.3878 MParespectively whereas composites fabricated by HLM technique shows slightly lower tensile strength (351.28 MPa), ILSS(16.75 MPa) and flexural strength (221.92 MPa). The intra-laminar mode-I fracture toughness test is also performed usingcompact tension specimen. The critical stress intensity factor (KIC) and critical strain energy release rate (GIC) are observed tobe higher for VARTM composites. At the end, the dynamic mechanical analysis is performed to understand the materialbehavior and structural characteristics of these composites in high-temperature environment. This investigation purelygoverns the small-scale wind turbine blade structure in two different extreme climates from ambient to sustainabletemperature.

참고문헌 (Reference)

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