| Popis: |
Carbon fiber-reinforced polymer (CFRP) is used in the aeronautical industry in the manufacture of different aircraft components. This paper is about studying the mechanical (tensile, flexural, interlaminar shear strength), thermal and moisture characterizations of the laminate. A carbon-reinforced polymer laminate of G939 material and 913 resin systems are selected to study the effect of moisture and thermal on the properties of the laminate. The composite lamina is made of different layer orientations like 0°/90°, 0°/45°, 0°/45°/90°, 0°/0° and 90°/90°. The laminate is fabricated by vacuum bagging and cured using autoclave. Interlaminar shear strength (ILSS) was carried out for the specimens. Thermal degradation of CFRP is molecular deterioration as a result of overheating, and as the temperature increases the bonding between the molecules gets weaker and starts reacting with each other which results in the change of properties of composites. Laminates of 0–90 orientation are fabricated, and interlaminar shear strength (ILSS) at 50, 100 and 150 °C was carried out according to Dutch Institute for Norms (DIN) for the specimens. Micro cracks in the matrix are observed due to moisture diffusion. Five different test liquids are chosen: water, diesel, petrol, lubricating oil and acid in which specimens are immersed for 2 days, 5 days and 7 days. This work will help composite materials’ designers and manufacturers in designing high strength composite parts for aerospace. |
