Comparison of Three Additive Manufacturing (AM) Techniques for Manufacturing Complex Hollow Composite Parts

Tosto, Claudio; Pergolizzi, Eugenio; Cicala, Gianluca

doi:10.1002/masy.202100340

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…Among these cutting-edge technologies, Liquid Crystal Display (LCD) printing has garnered considerable attention due to its simplicity, cost effectiveness, and ability to achieve high-resolution prints [1][2][3]. As a result, it has found widespread applications in diverse fields, including dentistry, microfluidic, jewelry design, toy manufacturing, and even composite tooling [4][5][6][7][8][9]. The core principle behind LCD printing involves the use of photosensitive resins that solidify when exposed to light, daylight, or UV light [10].…”

Section: Introductionmentioning

confidence: 99%

Epoxy-Based Blend Formulation for Dual Curing in Liquid Crystal Display 3D Printing: A Study on Thermomechanical Properties Variation for Enhanced Printability

Tosto,

Saitta,

Latteri

et al. 2024

Polymers

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The aim of this study was to explore the thermal properties of epoxy–acrylate blends for the liquid crystal display (LCD) 3D printing technique. Starting from an epoxy–acrylate blend with a ratio of epoxy to acrylate of 50:50, the effect of adding a reactive monofunctional epoxy diluent was evaluated. The diluent was a resin composed by oxirane, mono[(C12-14 alkyl) methyl] derivatives selected for its low viscosity (i.e., 1.8 Poise) at room temperature and its reactivity. The diluent content varied from 15 to 25 wt% and, for all the formulation, double curing cycles, where thermal curing followed photocuring, were studied. The effect of different curing temperatures was also evaluated. The control of the diluent content and of the curing temperature allowed tailoring of the thermomechanical resin properties while improving the resin’s processability. The glass transition ranged from 115.4 °C to 90.8 °C depending on the combination of diluent content and post-curing temperature. The resin developed displayed a faster processing time tested on a reference part with printing time of 4 h and 20 min that was much lower than the printing times (7 and 16 h) observed for the starting formulations.

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Section: Introductionmentioning

confidence: 99%

Epoxy-Based Blend Formulation for Dual Curing in Liquid Crystal Display 3D Printing: A Study on Thermomechanical Properties Variation for Enhanced Printability

Tosto,

Saitta,

Latteri

et al. 2024

Polymers

Self Cite

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Alternative Selection Material and Auto Part Manufacturing Process for Fused Deposition Modeling Using CAD-CAM-CAE Tools

Peralta-Zurita,

Ferrándiz-Bou,

Cobos

et al. 2024

Lecture Notes in Networks and Systems

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Investigation of mechanical properties in FFF- produced PLA samples using the Erichsen test: application of definitive screening and RSM

Demir

2024

RPJ

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Purpose This study aims to investigate how printing parameters affect the mechanical properties of specimens produced through fused filament fabrication, using the Erichsen test to assess deformation characteristics and material durability under stress. Design/methodology/approach Polylactic acid (PLA) specimens were printed and tested in accordance with the ISO 20482 standard. Definitive screening was conducted to identify the most influential process parameters. This study examined the effects of four key process parameters – number of layers, layer height, crossing angle and nozzle diameter – on force, distension, peak energy and energy to break. Each parameter was assessed at three levels and a large number of required experiments was managed by using response surface methodology (RSM). Findings This study revealed that the number of layers, layer height and crossing angle are the most significant factors that influence the mechanical properties of 3D-printed materials. The number of layers had the greatest impact on the peak force, contributing 44.25%, with thicker layers typically enhancing material strength. The layer height has a significant effect on energy absorption and deformation, with greater layer heights generally improving these properties. Nozzle diameter contributed only 1.10%, making it the least influential factor; however, its impact became more pronounced in interactions with other parameters. Originality/value This paper presents a comprehensive experimental investigation into the effects of process parameters on the crack strength and behavior of 3D-printed PLA specimens using the RSM method. The documented results can be used to develop optimization models aimed at achieving desired mechanical properties with reduced variation and uncertainty in the final product.

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Comparison of Three Additive Manufacturing (AM) Techniques for Manufacturing Complex Hollow Composite Parts

Cited by 3 publications

References 4 publications

Epoxy-Based Blend Formulation for Dual Curing in Liquid Crystal Display 3D Printing: A Study on Thermomechanical Properties Variation for Enhanced Printability

Epoxy-Based Blend Formulation for Dual Curing in Liquid Crystal Display 3D Printing: A Study on Thermomechanical Properties Variation for Enhanced Printability

Alternative Selection Material and Auto Part Manufacturing Process for Fused Deposition Modeling Using CAD-CAM-CAE Tools

Investigation of mechanical properties in FFF- produced PLA samples using the Erichsen test: application of definitive screening and RSM

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