Impact behaviour and non destructive evaluation of 3D printed reinforced composites

Papa, Ilaria; Manco, Emanuele; Lopresto, V.; Squillace, Antonino

doi:10.1016/j.compstruct.2021.115112

Cited by 20 publications

(7 citation statements)

References 35 publications

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“…Several kinds of research have been written on NDT [61,64], quality control [65], and process monitoring [62] of additive manufacturing techniques and products. Ultrasonic testing (UT) is the most promising [66] and results in one the most capable NDT methods used for testing industrial elements [67,68].…”

Section: Ultrasonic Inspectionmentioning

confidence: 99%

Experimental integrated approach for mechanical characteristic optimization of FDM-printed PLA in an energy-saving perspective

Napolitano

Cozzolino

Papa

et al. 2022

Int J Adv Manuf Technol

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This experimental study investigates the effects of process parameters for 3D printing polylactic acid (PLA) samples on both the mechanical properties obtained and the energy consumption in the fused deposition modelling (FDM) process. The explained experimental activities provide an in-depth evaluation of all the strategies adopted in different temperatures and scan speed strategies. The results, extracted in tensile strength, ultrasonic inspection (UT), and specific energy consumption (SEC), highlight the printing parameters that mainly affect the mechanical characteristics of the final workpieces and the energy consumption to find an appropriate energy-saving energy strategy for the PLA additive manufacturing process. The results indicate a more excellent uniformity of the molded material, reducing the printing time and total energy consumption at high speeds (V = 110 mm/s) and one level of temperature (T = 215 °C). A new efficiency index has been introduced to release guidelines to pursue the best setup compromise.

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Section: Ultrasonic Inspectionmentioning

confidence: 99%

Experimental integrated approach for mechanical characteristic optimization of FDM-printed PLA in an energy-saving perspective

Napolitano

Cozzolino

Papa

et al. 2022

Int J Adv Manuf Technol

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“…The latter is the method used in Markforged MEX printers. It is a closer approach to conventional fiber placement since the fiber-embedding process takes place on the component using two separate systems, where one nozzle deposits the matrix and a second nozzle places the fiber [7,29,30].…”

Section: Introductionmentioning

confidence: 99%

Topology optimization applied to additive-manufactured hydrofoil wing components

Costa,

Mata,

Bencatel

et al. 2024

Academia Materials Science

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This study investigates the development of hydrofoil components for an unmanned boat designed for control testing. Hydrofoils, characterized by their hydrodynamic shape, generate lift forces that elevate the boat above the water, enhancing its speed. Utilizing Fusion 360, a mechanism was designed to adjust the angle of attack of the hydrofoil wings. Subsequently, nTop and Eiger software were used to optimize and prepare these components for additive manufacturing (AM), with the primary objective being weight reduction. Material extrusion was selected as the preferred AM technology. The workflow within nTop was adapted for two materials: Onyx and carbon fiber-reinforced Onyx. Generative design techniques were applied, including field-driven design, lattice structures, and topology optimization (TO). Utilizing variable-thickness shells proved an efficient approach for reducing mass while preserving mechanical integrity. TO of the lever resulted in a significant reduction in mass.

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“…Kabir et al [13] performed drop weight and impact tests on several FDM nylon matrix-reinforced composites. Ojha et al [14] also performed tests on nylon-based matrix composites, and Papa et al [15] measured thermography fields in AM composites under impact at high speed. Vaško et al [16] systematically tested 3D-printed composites under different printing conditions.…”

Section: Introductionmentioning

confidence: 99%

Impact Strength for 3D-Printed PA6 Polymer Composites under Temperature Changes

Díaz-Rodríguez,

Pertuz-Comas,

Bohórquez-Becerra

2023

JMMP

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This paper shows how temperature influences impact energy for continuous fiber additively manufactured (AM) polymer matrix composites. AM composites were fabricated with a nylon-based matrix and four continuous reinforcements: fiberglass, high-temperature fiberglass (HSHT), Kevlar, and carbon. The tested temperatures ranged from −40 to 90 °C. The chosen printed configuration for the lattice structure and fiber volume was the configuration that was found to perform the best in the literature, with a volumetric fiber content of 24.2%. Impact tests showed that the best response was fiberglass, HSHT, Kevlar, and carbon, in that order. The impact resistance was lowered at temperatures below ambient temperatures and above 50 °C. Additionally, each material’s impact energy was adjusted to third-degree polynomials to model results, with correlation factors above 92%. Finally, the failure analysis showed the damage mechanisms of matrix cracking, delamination in the printing direction, fiber tearing, and fiber pulling as failure mechanisms.

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Impact behaviour and non destructive evaluation of 3D printed reinforced composites

Cited by 20 publications

References 35 publications

Experimental integrated approach for mechanical characteristic optimization of FDM-printed PLA in an energy-saving perspective

Experimental integrated approach for mechanical characteristic optimization of FDM-printed PLA in an energy-saving perspective

Topology optimization applied to additive-manufactured hydrofoil wing components

Impact Strength for 3D-Printed PA6 Polymer Composites under Temperature Changes

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