3d printed continuous fiber reinforced composite auxetic honeycomb structures

Quan, Chao; Han, Bin; Hou, Zhanghao; Zhang, Qi; Tian, Xiaoyong; Lu, Tian Jian

doi:10.1016/j.compositesb.2020.107858

Cited by 206 publications

(52 citation statements)

References 37 publications

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“…The archetype of the auxetic structure is the re-entrant honeycomb network, thanks to its peculiarly designed porosity [6,[11][12][13]. Most of the known auxetic materials are artificially designed metamaterials [14] or composites which can be patterned through 3d printing or weaving [3,[15][16][17][18]. Few materials are intrinsically auxetic at the molecular level, because the structure has to feature interior empty spaces to behave in an auxetic way [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Non-auxetic/auxetic transitions inducing modifications of the magnetic anisotropy in CoFe2O4 thin films

Martin

Roulland

Grenier

et al. 2020

Journal of Alloys and Compounds

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An auxetic behaviour is evidenced in CoFe2O4 thin films grown by pulsed laser deposition on (100) MgO substrates under various O2/N2 pressures. This rare behaviour for an intrinsic material is observed for intermediate oxidation conditions, in between two non auxetic domains delimited by high (>0.05 mbar) and low (<0.03 mbar) O2/N2 deposition pressures. Combining X-ray resonant diffraction and Mössbauer spectroscopy, we experimentally prove that the auxetic behaviour is related to the presence of cobalt ions in the tetrahedral sites. The impact of the structural modifications caused by the various oxidation conditions on the electronic and magnetic properties are studied for the various oxidation domains. Variations as important as a transition from a p-type semiconducting to an insulating behaviour, or from an in-plane to an out-of-plane magnetization are observed when spanning from the lowest (0.01 mbar) to the highest (1 mbar) studied oxidation pressures.

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Section: Introductionmentioning

confidence: 99%

Non-auxetic/auxetic transitions inducing modifications of the magnetic anisotropy in CoFe2O4 thin films

Martin

Roulland

Grenier

et al. 2020

Journal of Alloys and Compounds

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“…Unlike the conventional fabrication approaches, 3D printing has become a new manufacturing method for honeycomb [ 31 , 32 , 33 , 34 , 35 , 36 , 37 ]. With the development of 3D-printing technology, the manufacturing of complex topologies has become possible.…”

Section: Introductionmentioning

confidence: 99%

Effect of Absorbent Foam Filling on Mechanical Behaviors of 3D-Printed Honeycombs

et al. 2020

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Polylactic acid (PLA) hexagonal honeycomb structures were fabricated by using 3D-printing technology. By filling with absorbent polymethacrylimide (PMI) foam, a novel absorbent-foam-filled 3D-printed honeycomb was obtained. The in-plane (L- and W-direction) and out-of-plane (T-direction) compressive performances were studied experimentally and numerically. Due to absorbent PMI foam filling, the elastic modulus, compressive strength, energy absorption per unit volume, and energy absorption per unit mass of absorbent-foam-filled honeycomb under L-direction were increased by 296.34%, 168.75%, 505.57%, and 244.22%, respectively. Moreover, the elastic modulus, compressive strength, energy absorption per unit volume, and energy absorption per unit mass, under W-direction, also have increments of 211.65%, 179.85, 799.45%, and 413.02%, respectively. However, for out-of-plane compression, the compressive strength and energy absorption per unit volume were enhanced, but the density has also been increased; thus, it is not competitive in energy absorption per unit mass. Failure mechanism and dimension effects of absorbent-foam-filled honeycomb were also considered. The approach of absorbent foam filling made the 3D-printed honeycomb structure more competitive in electromagnetic wave stealth applications, while acting simultaneously as load-carrying structures.

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“…Furthermore, honeycomb also reaches critical stress and fails due to brittle crushing under a high enough tensile load. Quan et al [33] proved the honeycomb behavior under in-plane tensile load along the longitudinal direction, which showed a sudden drop after reaching peak stress due to instability or defects forming layer by layer in an asymmetric way.…”

Section: Resultsmentioning

confidence: 99%

Consideration of Lamination Structural Analysis in a Multi-Layered Composite and Failure Analysis on Wing Design Application

et al. 2021

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A finite element (FE) model is developed to study the structural performance on a composite wing of a UAV with a tubercle design at the leading edge of the wing. The experimental study of the designation of the composite at the wing skin is carried out to prove the simulation validity through material characteristics. In this paper, the numerical modeling for simulation is highlighted to correlate the process parameter setting of simulation replicating the actual experimental tests. The percentage difference was calculated to be 11.1% by tensile and 10.47% by flexural. The numerical work applied the study of FE analysis and developed a standardized numerical approach for structural optimization, known as FE-ACP simulation. The significant findings of deformation are obtained according to Schrenk’s aerodynamic loading, while the prediction of failure mode of Tsai–Wu under interaction among stresses and strains was acquired at the seventh and eighth layer of both spars.

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3d printed continuous fiber reinforced composite auxetic honeycomb structures

Cited by 206 publications

References 37 publications

Non-auxetic/auxetic transitions inducing modifications of the magnetic anisotropy in CoFe2O4 thin films

Non-auxetic/auxetic transitions inducing modifications of the magnetic anisotropy in CoFe2O4 thin films

Effect of Absorbent Foam Filling on Mechanical Behaviors of 3D-Printed Honeycombs

Consideration of Lamination Structural Analysis in a Multi-Layered Composite and Failure Analysis on Wing Design Application

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