3D printing of continuous fiber reinforced cellular structural composites for the study of bending performance

Author:

Cui Ziying1ORCID,Huang Xiayan1,Jia Mengwei2,Panahi-Sarmad Mahyar1,Hossen MD Imran1,Dong Ke34ORCID,Xiao Xueliang1

Affiliation:

1. Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, China

2. School of Mechanical Engineering, Jiangnan University, Wuxi, P.R. China

3. School of System Design and Intelligent Manufacturing, Southern University of Science and Technology, Shenzhen, China

4. Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China

Abstract

Optimization of 3D printing factors has been the underlying issue for the last decade. Herein, a 3D-printing procedure was operated to fabricate continuous fiber-reinforced composites in various shape-filled cellular structures based on Kevlar fiber and polylactic acid The efficient processing parameters in bending performance have been systematically studied, such as printing path, fiber orientation, infill density, cell length, and layer thickness. A three-point bending test revealed that, as the effective density increased, there was an irrefutable rise in strength and stiffness of CFRCs with different infill structures. Structural parameters like cell length could improve bending performance; this effect was evaluated by adjusting the fiber orientations along the stretching direction. Furthermore, a finite element model was developed, and its results were verified with the experimental results. The sample of the rhombus-filled cellular CFRCs with a layer thickness of 0.1 mm was found to have the highest bending strength and modulus of 53.61 MPa and 2728.41 MPa, respectively. Since mechanical behavior mostly depends on numerous microstructural factors, plenty of prototypes should be designed to achieve the required bending strength and flexural modulus—this work is a pattern guide to reduce the number of printed samples.

Funder

Fibre materials and products for emergency support and public safety

National Natural Science Foundation of China

Publisher

SAGE Publications

Subject

Materials Chemistry,Polymers and Plastics,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites

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