Additive manufacturing of short carbon filled fiber nylon: effect of build orientation on surface roughness and viscoelastic behavior

León-Becerra, Juan; Hidalgo-Salazar, Miguel Ángel; Correa-Aguirre, Juan Pablo; González-Estrada, Octavio Andrés; Pertuz, Alberto David

doi:10.1007/s00170-023-12503-w

Cited by 9 publications

(4 citation statements)

References 43 publications

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“…Viscoelastic characteristics influence the dynamic impact response of structures [41]. Given that the viscoelastic behaviour of a 3D-printed material is influenced by print direction [42], this should be accounted for in future studies for more accurate impact predictions.…”

Section: Resultsmentioning

confidence: 99%

The importance of print orientation in numerical modelling of 3D printed structures under impact loading

Fisher,

Kazancı,

Almeida Jr

2024

Mater. Res. Express

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Anisotropy is commonly observed in 3D-printed polymer and composite parts, particularly when manufactured by fused filament fabrication (FFF). This anisotropy can lead to difficulty obtaining accurate material properties during mechanical characterisation. This study establishes a connection between the print parameters used in specimen characterisation and their influence on the accuracy of numerical models for 3D-printed cellular structures under impact. Material properties from only one of the characterisation variants studied, with a parallel infill, accurately represented the force response and physical damage of the experimental samples. In contrast, the default characterisation specimen with a ±45° infill underpredicted the peak force and overpredicted the impact duration, potentially leading to underestimating impact severity. This discrepancy could result in greater damage to a person or structure being protected. It is recommended that the parallel infill pattern be used when characterising materials for use in FFF cellular structures under impact loading to ensure more reliable simulations and improved design of impact-resistant structures.

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Section: Resultsmentioning

confidence: 99%

The importance of print orientation in numerical modelling of 3D printed structures under impact loading

Fisher,

Kazancı,

Almeida Jr

2024

Mater. Res. Express

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“… Carbon fiber-reinforced polyamide (PA-CF)—carbon fibers added to polyamide increase mechanical strength and stiffness while reducing the weight of printed elements [ 40 , 41 ]. Aramid fiber-reinforced polyamide (PA–Aramid)—aramid fibers (e.g., Kevlar) used as reinforcement improve the wear resistance, impact resistance, and temperature stability of printed elements [ 42 , 43 ]. Graphite fiber-reinforced polyamide (PA-G)—graphite fibers used as reinforcement improve the compressive strength, chemical resistance, and thermal resistance of printed parts [ 44 , 45 ].…”

Section: Introductionmentioning

confidence: 99%

“…Aramid fiber-reinforced polyamide (PA–Aramid)—aramid fibers (e.g., Kevlar) used as reinforcement improve the wear resistance, impact resistance, and temperature stability of printed elements [ 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

“…Carbon fiber-reinforced polyamide (PA-CF)-carbon fibers added to polyamide increase mechanical strength and stiffness while reducing the weight of printed elements [40,41]. • Aramid fiber-reinforced polyamide (PA-Aramid)-aramid fibers (e.g., Kevlar) used as reinforcement improve the wear resistance, impact resistance, and temperature stability of printed elements [42,43].…”

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Bending Strength of Continuous Fiber-Reinforced (CFR) Polyamide-Based Composite Additively Manufactured through Material Extrusion

Łakomy,

Kluczyński,

Sarzyński

et al. 2024

Materials

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This paper shows the three-point bending strength analysis of a composite material consisting of polyamide doped with chopped carbon fiber and reinforced with continuous carbon fiber produced by means of the material extrusion (MEX) additive manufacturing technique. For a comparison, two types of specimens were produced: unreinforced and continuous fiber-reinforced (CFR) with the use of carbon fiber. The specimens were fabricated in two orientations that assure the highest strength properties. Strength analysis was supplemented by additional digital image correlation (DIC) analysis that allowed for the identification of regions with maximum strain within the specimens. The utilization of an optical microscope enabled a fractographic examination of the fracture surfaces of the specimens. The results of this study demonstrated a beneficial effect of continuous carbon fiber reinforcement on both the stiffness and strength of the material, with an increase in flexural strength from 77.34 MPa for the unreinforced composite to 147.03 MPa for the composite reinforced with continuous carbon fiber.

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Cellulose Based Rubber Blends and Microcomposites

Sahila,

Jayakumari,

Sampath

et al. 2024

Advanced Structured Materials

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Additive manufacturing of short carbon filled fiber nylon: effect of build orientation on surface roughness and viscoelastic behavior

Cited by 9 publications

References 43 publications

The importance of print orientation in numerical modelling of 3D printed structures under impact loading

The importance of print orientation in numerical modelling of 3D printed structures under impact loading

Bending Strength of Continuous Fiber-Reinforced (CFR) Polyamide-Based Composite Additively Manufactured through Material Extrusion

Cellulose Based Rubber Blends and Microcomposites

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