Improving the Mode-II interlaminar fracture toughness of polymeric matrix composites through additive manufacturing
| Autor: | Vinay Damodaran, M. Milostan, Pavana Prabhakar, A. G. Castellanos |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
3D printing 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention Fracture toughness law lcsh:TA401-492 General Materials Science Fiber Composite material chemistry.chemical_classification Fused deposition modeling business.industry Mechanical Engineering Delamination Polymer 021001 nanoscience & nanotechnology Durability 0104 chemical sciences chemistry Mechanics of Materials Fracture (geology) lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology business |
| Zdroj: | Materials & Design, Vol 157, Iss, Pp 60-73 (2018) |
| ISSN: | 0264-1275 |
| DOI: | 10.1016/j.matdes.2018.07.006 |
| Popis: | Delamination is a common failure mode observed in fiber reinforced polymeric composites subjected to thermo-mechanical loads. Reinforcements at the interlaminar regions or in the through-thickness direction have been previously shown to improve the damage resistance and durability of these composites. In particular additive manufacturing (AM), also called 3D printing, has been shown to increase the interlaminar shear strength when used for custom printing of polymer reinforcements over carbon fiber prepreg prior to the layup process of layered composites. In this paper, printing of interlaminar polymer reinforcements using fused deposition modeling (FDM) technique within AM is proposed for improving the interlaminar fracture toughness of carbon fiber laminates. The rationale behind this improvement in the interlaminar fracture toughness values due to printed polymer reinforcements (PPR) is investigated by elucidating the influence of varying the process parameters, such as print speed, spacing, and dimensions. An in-depth understanding of the bond quality between the prepregs and the printed polymers as well as the interlaminar fracture surfaces formed on the Mode-II fracture toughness values are established by developing an experimentally validated thermo-chemical finite element modeling framework. Keywords: Additive manufacturing, Prepregs, Fracture toughness, Thermo-chemical finite element analysis, Peel test |
| Databáze: | OpenAIRE |
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