The influence of the humidity on the mechanical properties of 3D printed continuous flax fibre reinforced poly(lactic acid) composites

Kergariou, Charles de; Saidani-Scott, Hind; Perriman, Adam W.; Scarpa, Fabrizio; Duigou, Antoine Le

doi:10.1016/j.compositesa.2022.106805

Cited by 37 publications

(45 citation statements)

References 47 publications

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“…All lines before and after a back and forth corner have been increased by 1.2 mm in length, to allow the filament to stick to its support layer. This phenomena was explained in a previous study of the research group [6].…”

Section: Printingsupporting

confidence: 53%

“…The final SoP is checked manually to make sure the corresponding gcode is printable. As a previous study from the research group has shown, the gcode print path sent to the 3D printer is usually not the same as the printed part obtained [5,6]. Several local printing patterns are not achievable without deep tailoring of the printing variables, such as printing speed, temperature or layer height.…”

Section: Structure Of the Design Methodologymentioning

confidence: 97%

“…The properties implemented in the model are presented in Table 1. To choose the properties to be implemented, priority has been given to the characteristics of the FFRPLA composite measured via tensile and hygro expansion tests made in the present study, and in a previous work performed by the same authors [6]. In this study, the properties required have been complemented with engineering constants 𝜈 23 , 𝐺 23 from open literature.…”

Section: Voxel-based Modellingmentioning

confidence: 99%

“…The Chamis micromechanical model has been used to obtain the equivalent composite transverse shear modulus 𝐺 23 [31]. In this equation, the shear modulus of the PLA is considered equal to G 𝑃 𝐿𝐴 = 552.6 MPa, and the fibre volume fraction is 0.3 [6]. The shear stiffness (G 𝑃 𝐿𝐴 ) of the PLA matrix has been determined via the relation between tensile and shear modulus for isotropic materials 𝜈 𝑃 𝐿𝐴 = 0.36 [32], with E 𝑃 𝐿𝐴 = 1503 MPa [33].…”

Section: Voxel-based Modellingmentioning

confidence: 99%

See 3 more Smart Citations

Design of 3d and 4d Printed Continuous Fibre Composites Via an Evolutionary Algorithm and Voxel-Based Finite Elements: Application to Natural Fibre Hygromorphs

Kergariou

Kim²,

Perriman³

et al. 2022

SSRN Journal

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Section: Printingsupporting

confidence: 53%

Section: Structure Of the Design Methodologymentioning

confidence: 97%

Section: Voxel-based Modellingmentioning

confidence: 99%

Section: Voxel-based Modellingmentioning

confidence: 99%

See 2 more Smart Citations

Design of 3d and 4d Printed Continuous Fibre Composites Via an Evolutionary Algorithm and Voxel-Based Finite Elements: Application to Natural Fibre Hygromorphs

Kergariou

Kim²,

Perriman³

et al. 2022

SSRN Journal

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“…Hygromorph composites with intrinsic material programming features constitute a potential class of actuators that generate adhesive characteristics to match different surfaces of objects. Quite importantly, the use of flax fibers in these biobased composites provides a sustainable route to develop smart adaptive solids with load-bearing capacity and low carbon footprint …”

Section: Introductionmentioning

confidence: 99%

Biobased and Programmable Electroadhesive Metasurfaces

Duigou

Guo

et al. 2022

ACS Appl. Mater. Interfaces

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Electroadhesion has shown the potential to deliver versatile handling devices because of its simplicity of actuation and rapid response. Current electroadhesion systems have, however, significant difficulties in adapting to external objects with complex shapes. Here, a novel concept of metasurface is proposed by combining the use of natural fibers (flax) and shape memory epoxy polymers in a hygromorphic and thermally actuated composite (HyTemC). The biobased material composite can be used to manipulate adhesive surfaces with high precision and controlled environmental actuation. The HyTemC concept is preprogrammed to store controllable moisture and autonomous desorption when exposed to the operational environment, and can reach predesigned bending curvatures up to 31.9 m–1 for concave and 29.6 m–1 for convex shapes. The actuated adhesive surface shapes are generated via the architected metasurface structure, incorporating an electroadhesive component integrated with the programmable biobased materials. This biobased metasurface stimulated by the external environment provides a large taxonomy of shapesfrom flat, circular, single/double concave, and wavy, to piecewise, polynomial, trigonometric, and airfoil configurations. The objects handled by the biobased metasurface can be fragile because of the high conformal matching between contacting surfaces and the absence of compressive adhesion. These natural fiber-based and environmentally friendly electroadhesive metasurfaces can significantly improve the design of programmable object handling technologies, and also provide a sustainable route to lower the carbon and emission footprint of smart structures and robotics.

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Human–Material Interaction Enabled by Fused Filament Fabrication 4D Printing

Lalegani Dezaki,

Zolfagharian,

Demoly

et al. 2024

Adv Eng Mater

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This review delves into four‐dimensional printing (4DP) through fused filament fabrication (FFF) and its implications for human‐material interaction (HMI). FFF 4DP’s emergence in HMI represents a nascent and evolving concept worthy of deeper exploration. The article introduces FFF 4DP’s fundamental principles, methodologies, materials, and associated benefits and challenges. Its primary focus is the intersection between FFF 4DP and HMI, investigating the potential of employing FFF 4D printed objects as interactive interfaces. Various HMI scenarios are examined, including applications in soft actuators, smart toys, household devices, smart consumer products, 4D textiles, and customizable wood‐based items. Moreover, the article discusses the current state‐of‐art and development in the field, highlighting notable projects that integrate FFF 4DP into HMI to advance environmental sustainability. It also identifies key challenges/limitations requiring attention for the widespread adoption of 4DP in HMI applications. This work offers an in‐depth analysis of FFF 4DP within the HMI context, underscoring its potential to transform human interactions with machines and smart devices. It introduces innovative features for dynamic and adaptable interfaces, promising to revolutionize user experiences. The article serves as a valuable resource for researchers, practitioners, and designers interested in exploring the exciting possibilities of FFF 4DP in the realm of HMI.This article is protected by copyright. All rights reserved.

show abstract

The influence of the humidity on the mechanical properties of 3D printed continuous flax fibre reinforced poly(lactic acid) composites

Cited by 37 publications

References 47 publications

Design of 3d and 4d Printed Continuous Fibre Composites Via an Evolutionary Algorithm and Voxel-Based Finite Elements: Application to Natural Fibre Hygromorphs

Design of 3d and 4d Printed Continuous Fibre Composites Via an Evolutionary Algorithm and Voxel-Based Finite Elements: Application to Natural Fibre Hygromorphs

Biobased and Programmable Electroadhesive Metasurfaces

Human–Material Interaction Enabled by Fused Filament Fabrication 4D Printing

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