Effect on residual strength properties of needle punched chopped strand mat composites
| Autor: | Daiki Ichikawa, Akio Ohtani, Hiroyuki Hamada, Tohru Morii |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
needle punch
Materials science chopped strand mat 02 engineering and technology residual strength properties Fibre-reinforced plastic 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Residual strength TJ1-1570 Mechanical engineering and machinery Composite material 0210 nano-technology frp |
| Zdroj: | Mechanical Engineering Journal, Vol 5, Iss 2, Pp 17-00445-17-00445 (2017) |
| ISSN: | 2187-9745 |
| Popis: | In recent years, due to its high specific stiffness and strength, fiber reinforced plastics (FRP) are being used in aerospace components, automobile components, sports equipment, and in various other applications. Especially since composite laminates have superior mechanical properties, there is a high demand for their use as structural materials. However, mechanical properties in the out-of-plane direction of composite laminates, specifically the interlaminar strength and fracture toughness, are much weaker than those in the in-plane direction. This study focuses on the needle punch techniques that aim to improve composite properties in the out-of-plane direction. This technique is typically used for fabricating non-woven fabrics. Fiber webs were punched by a plate containing many special needles with many barbs. A portion of fibers in the in-plane direction were aligned in the out-of-plane direction. In this study, the needle punch process is applied on chopped strand mats. Static tensile tests, fatigue loading tests, and residual strength tests are performed. Tensile properties, residual strength properties and fracture mechanisms of FRPs with needle-punched chopped strand mats are investigated. |
| Databáze: | OpenAIRE |
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