Factors affecting the properties of composites made by 4D printing (moldless composites manufacturing)

Hoa, Suong V.

doi:10.1080/20550340.2017.1355519

Cited by 11 publications

(8 citation statements)

References 6 publications

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“…Instead of using prepreg as in AFP, 3D printing uses filament or bundle of fibres and produces small size of printing beads to form a part [2] without the need of molds. Thus it is able to manufacture composites at low labor and production costs with an immense range of complexities [3].…”

Section: Introductionmentioning

confidence: 99%

Performance-driven 3D printing of continuous curved carbon fibre reinforced polymer composites: A preliminary numerical study

Zhang

Yang

Sheng

2018

Composites Part B: Engineering

106

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This paper presents a new concept to place continuous curved fibres for carbon fibre reinforced polymer (CFRP) composites, which can be fulfilled by potential additive or hybrid manufacturing technology. Based on the loading condition, principal stress trajectories are generated through finite element analysis (FEA) and used as the guidance for the placement paths of carbon fibres. Three numerical cases including an open-hole single ply lamina under uniaxial tension and open-hole cross-ply laminate under biaxial tension and normal pressure are studied and compared with traditional reinforced composites with unidirectional fibres. The modelling results show that the stress concentration in both fibre and matrix are reduced significantly by the curved fibre placement and the stiffness of CFRP composites have been improved. This concept of performance-driven optimization method could lead to a useful tool for the design of future 3D printing process for fibre reinforced composites.

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Section: Introductionmentioning

confidence: 99%

Performance-driven 3D printing of continuous curved carbon fibre reinforced polymer composites: A preliminary numerical study

Zhang

Yang

Sheng

2018

Composites Part B: Engineering

106

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“…In the near future, we will pay attention to another application of the asymmetric laminates via the concept of 4D printing of composites, which is advanced and significant [41].…”

Section: Discussionmentioning

confidence: 99%

Global and Local Dynamics of a Bistable Asymmetric Composite Laminated Shell

2021

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As bistable composite laminated plate and shell structures are often exposed to dynamic environments in practical applications, the global and local dynamics of a bistable asymmetric composite laminated shell subjected to the base excitation is presented in this paper. Temperature difference, base excitation amplitude, and detuning parameters are discussed. With the change of temperature difference, the super-critical pitchfork bifurcation occurs. Three equilibrium solutions corresponding to three equilibrium configurations (two stable configurations and one unstable configuration) can be obtained. With the increase of excitation amplitude, local and global dynamics play a leading role successively. The global dynamics between the two stable configurations behave as the periodic vibration, the quasi-periodic vibration, the chaotic vibration and dynamic snap-through when the excitation amplitude is large enough. The local dynamics that are confined to a single stable configuration behave as 1:2 internal resonance, saturation and permeation when the excitation amplitude is small. Dynamic snap-through and large-amplitude vibrations with two potential wells for the global dynamics will lead to a broad application prospect of the bistable asymmetric composite laminated shell in energy harvesting devices.

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“…Additionally, the process parameters of these manufacturing approaches are difficult to control [118]. Nowadays, moldless composite manufacturing is usually done through 4DP technology and is called 4D printing of composites (4DPCs) [119].…”

Section: D Printing Technologiesmentioning

confidence: 99%