Path design and compression behavior of 3D printed continuous carbon fiber reinforced composite lattice sandwich structures

Zhang, Peng; Han, Zhenyu; Ran, Xudong; Sun, Shouzheng; Fu, Haipeng

doi:10.1016/j.compstruct.2022.115893

Cited by 10 publications

(5 citation statements)

References 25 publications

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“…Importantly, these values exceed those of corrugated plates fabricated using 3D printing (4.92 and 16.96 MPa/(g/cm 3 ), respectively) 39 . Specifically focusing on the specific strength at III density structure, it surpasses the specific strength of pyramidal lattice structures made from continuous carbon fiber‐reinforced composites prepared using continuous fiber three‐dimensional printing, which measures 10.115 MPa/(g/cm 3 ) 28 . It is slightly higher than the specific strength of corrugated aluminum cores produced using conventional technology, which is 13.02 MPa/(g/cm 3 ) 40 .…”

Section: Resultsmentioning

confidence: 89%

“…

F_{A} goodbreak= \frac{E_{C} A}{l} δ_{A},

A goodbreak= italicba,

where E C is the compressive modulus of the column, A is the cross‐sectional area of the column, b is the width of the column section, a is the thickness of the column section, and l is the length of the column. The sheer force F S is expressed as follows 28

F_{S} goodbreak= \frac{12 E_{C} I}{l^{3}} δ_{S},

I goodbreak= \frac{{italicba}^{3}}{12},

where I represents the second‐order moment of the cross‐sectional area of the pillar.…”

Section: Resultsmentioning

confidence: 99%

“…39 Specifically focusing on the specific strength at III density structure, it surpasses the specific strength of pyramidal lattice structures made from continuous carbon fiberreinforced composites prepared using continuous fiber three-dimensional printing, which measures 10.115 MPa/ (g/cm 3 ). 28 It is slightly higher than the specific strength of corrugated aluminum cores produced using conventional technology, which is 13.02 MPa/(g/cm 3 ). 40 Based on these findings, it can be concluded that single-layer multi-cell pyramid lattice sandwich structures fabricated using 3D printing exhibit excellent specific strength and stiffness.…”

Section: Compressive Properties Of Singlelayer Multi-cell Pyramidal L...mentioning

confidence: 86%

“…The failure mechanism and mechanical properties of these structures were analyzed through out‐of‐plane compression tests. Furthermore, Zhang et al 28 employed the 3D printing process of continuous fibers to fabricate lattice sandwich structures with different numbers and angles of pillars. The influence of different column angles on the compressive performance of the pyramid lattice sandwich structures was investigated through out‐of‐plane compression tests.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

An experimental and numerical investigation into compressive failure of pyramidal lattice sandwich structures fabricated using stereolithography technology

Zhai,

Wang,

et al. 2024

Fatigue Fract Eng Mat Struct

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The pyramid lattice sandwich structure, characterized by high load‐bearing capacity, lightweight nature, and fully open internal space, is considered an extremely promising super‐strong structure. Stereolithography technology was utilized to achieve the monolithic formation of single‐layer multi‐cell pyramidal lattice sandwich structures. Quasi‐static compression tests and finite element simulations were conducted to characterize the compressive properties and failure modes. Results indicate that the compressive strength, compressive modulus, specific strength, and specific stiffness of the single‐layer multi‐cell pyramidal lattice sandwich structure increase as the relative density increases. Moreover, fracture failure was observed in the structures with various relative densities. Additionally, the compressive failure of multi‐layer density gradient pyramidal lattice sandwich structures was investigated. Experimental and numerical findings indicate that the optimal density gradient scheme for the ZCMLG structure is I‐III‐II, resulting in a peak compression force that is 342.14% and 288.55% higher than that of the ZAMLG and ZBMLG structures, respectively.

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Section: Resultsmentioning

confidence: 89%

“…

F_{A} goodbreak= \frac{E_{C} A}{l} δ_{A},

A goodbreak= italicba,

F_{S} goodbreak= \frac{12 E_{C} I}{l^{3}} δ_{S},

I goodbreak= \frac{{italicba}^{3}}{12},

where I represents the second‐order moment of the cross‐sectional area of the pillar.…”

Section: Resultsmentioning

confidence: 99%

Section: Compressive Properties Of Singlelayer Multi-cell Pyramidal L...mentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An experimental and numerical investigation into compressive failure of pyramidal lattice sandwich structures fabricated using stereolithography technology

Zhai,

Wang,

et al. 2024

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…Different from the traditional manufacturing methods, 3D printing is an ideal method for preparing continuous fiber reinforced composites sandwich panels due to its no mold, excellent geometric design freedoms, and low cost. [15][16][17] So far, some flat sandwich panels of continuous fiber reinforced composite prepared by 3D printing have been reported. Hou et al 18 proposed two design strategies, namely, cross lapping and panel-core lapping, to fabricate the continuous fiber reinforced composite flat corrugated sandwich panels.…”

Section: Introductionmentioning

confidence: 99%

Bending behavior of 3D printed continuous fiber reinforced composite sandwich cylindrical shells

Liu,

Jiang,

Lou

et al. 2023

Journal of Reinforced Plastics and Composites

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Continuous carbon fiber reinforced composite sandwich cylindrical shells (CFRCSs) have been widely used in aerospace and automotive fields due to their excellent load-bearing performance. However, traditional manufacturing methods involve complex processes and expensive molds. This study uses 3D printing technology to manufacture CFRCSs with sinusoidal, triangular, and trapezoidal core. The sample surface and inside fiber distribution is inspected by the optical microscope and X-ray microscope, respectively. It is found that the samples have the defects of uneven resin distribution, fiber breaking, and fiber waviness. The bending behaviors of CFRCSs are investigated by the three-point bending test. The results show that the CFRCSs with sinusoidal core have the maximum ultimate load of about 3094 N, while those with the triangular core structure have the minimum ultimate load of about 1774 N. The triangular and sinusoidal structures mainly undergo debonding at the junction of the core and the panel and fracture at the core because of the small contact area between the core and panel. In contrast, the trapezoidal structure is mainly brittle fracture with fiber pull-out at the bottom panel and fracture at the top panel. The core type greatly influences the bending mechanical properties of the printed CFRCSs. 3D printing technology can be used to manufacture CFRCSs with required mechanical properties by flexibly designing the core shape.

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Laser direct fabrication and characterization of 3d lattice structures using continuous carbon fiber thermoset composites

Chen,

Qian,

Pappas

et al. 2024

Int J Adv Manuf Technol

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Path design and compression behavior of 3D printed continuous carbon fiber reinforced composite lattice sandwich structures

Cited by 10 publications

References 25 publications

An experimental and numerical investigation into compressive failure of pyramidal lattice sandwich structures fabricated using stereolithography technology

An experimental and numerical investigation into compressive failure of pyramidal lattice sandwich structures fabricated using stereolithography technology

Bending behavior of 3D printed continuous fiber reinforced composite sandwich cylindrical shells

Laser direct fabrication and characterization of 3d lattice structures using continuous carbon fiber thermoset composites

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