3D printed carbon-fibre reinforced composite lattice structures with good thermal-dimensional stability

Article Materials Science, Multidisciplinary

Characterisation of fusion bonding between filaments of thin 3D printed polyamide 6 using an essential work of fracture method

Qinghao He et al.

Summary: The research aims to quantify the extent and quality of fusion bonding between filaments during the 3D printing process, highlighting the need for improvement in fusion bonding for practical applications.

JOURNAL OF MATERIALS SCIENCE (2021)

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Article Engineering, Manufacturing

Designing and tailoring effective elastic modulus and negative Poisson's ratio with continuous carbon fibres using 3D printing

Yuan Chen et al.

Summary: The research utilized 3D printing and carbon fiber reinforcement to enhance the mechanical properties and negative Poisson's ratio of base polymers. The results showed that the effective elastic modulus and compression strength of PA specimens can be linearly enhanced by adding carbon fibers. Additionally, a small amount of carbon fibers can significantly increase the negative Poisson's ratio of PA composite materials.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2021)

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Article Mechanics

Predication of the in-plane mechanical properties of continuous carbon fibre reinforced 3D printed polymer composites using classical laminated-plate theory

Khalid Saeed et al.

Summary: This study evaluated the in-plane mechanical properties of continuous carbon fiber reinforced thermoplastic polyamide composite manufactured using a 3D printing system and found that the modulus of elasticity and tensile strength were significantly improved. The influence of fiber orientation on mechanical properties was investigated, and the experimentally determined values can be used to predict the performance of 3D printed components.

COMPOSITE STRUCTURES (2021)

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Article Materials Science, Composites

Topological design for 3D-printing of carbon fibre reinforced composite structural parts

Yuan Chen et al.

Summary: This study introduces a novel procedure that combines topological design and fiber placement paths to enhance the load-bearing capacity of 3D-printed carbon fiber reinforced composite parts. The use of continuous carbon fibers significantly increases the stiffness and peak load of the printed specimens, demonstrating the effectiveness of the approach in improving structural performance.

COMPOSITES SCIENCE AND TECHNOLOGY (2021)

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Article Materials Science, Composites

Metamaterials with a controllable thermal-mechanical stability: Mechanical designs, theoretical predictions and experimental demonstrations

Huabin Yu et al.

Summary: This paper systematically studies a design concept of metamaterial capable of offering a tailorable CTE and demonstrates a remarkable zero CTE result in experiments. The theoretical model and experimental verification show that this metamaterial design can provide excellent thermal-mechanical stability effectively.

COMPOSITES SCIENCE AND TECHNOLOGY (2021)

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Article Engineering, Mechanical

Compression behaviours of 3D-printed CF/PA metamaterials: Experiment and modelling

Yuan Chen et al.

Summary: This study investigates the compressive behaviors of 3D-printed carbon fiber reinforced polyamide composite metamaterials with negative Poisson's ratio (NPR) or enhanced effective elastic modulus (EEEM). Numerical models based on continuum damage mechanics and elastic-plastic model are developed to describe the behavior of the materials. The results show significant improvements in stiffness, peak force, energy absorption, and specific energy absorption for CCF/PA metamaterials compared to SCF/PA, with matrix failure identified as the predominant mode of failure.

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES (2021)

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Article Chemistry, Physical