The Printing Parameters Effects on the Dimensional Accuracy of the Parts Made of Photosensitive Resin

Boca, Mihai; Raichur, Ashok M.; Slătineanu, Laurenţiu

doi:10.1002/masy.202000287

Cited by 6 publications

(4 citation statements)

References 2 publications

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“…The greater the number of layers that need to be cured in the printing process, the greater the possibility for error, which could result in decreased dimensional accuracy of the printed part [ 54 ]. This result confirms the study conducted by Boca et al [ 56 ] and Favero et al [ 54 ], in which the best printing accuracy of VP was obtained on the largest layer thickness. In addition, it also can be mentioned that layer thickness also has a significant effect on the dimensional accuracy measured along the Z-axis of the printing platform.…”

Section: Resultssupporting

confidence: 92%

Excellent Characteristics of Environmentally Friendly 3D-Printed Nasopharyngeal Swabs for Medical Sample Collection

Mamba’udin,

Handayani,

Triawan

et al. 2023

Polymers

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3D-printed nasopharyngeal swabs for medical sample collection have been manufactured via additive manufacturing (AM), evaluated, and characterized in the present study. A multi-part component of nasopharyngeal swabs was proposed, in which the swab and handle were manufactured separately to reach sustainable production and environmentally friendly products. The swab was investigated using tensile, flexural, surface roughness, dimensional accuracy, and sample collection testing. The influence of printing parameters and post-curing time treatment on the mechanical properties, surface roughness, and dimensional accuracy of 3D-printed nasopharyngeal swabs were also evaluated. The result showed that 3D-printed nasopharyngeal swab shows outstanding tensile strength compared to the commercial flock nasopharyngeal swab. Moreover, the swab neck flexibility test showed that both PLA and dental non-castable 3D-printed nasopharyngeal swabs were able to bend 180°. Subsequently, the surface roughness of 3D-printed nasopharyngeal swab was identic with the commercial flock nasopharyngeal swab. The proposed 3D-printed nasopharyngeal swab design could carry an artificial mucus sample of 141.6 mg at a viscosity of 9455.4 mPa.s. The cost to fabricate a 3D-printed nasopharyngeal swab was estimated at USD0.01–0.02 per swab. 3D-printed nasopharyngeal swab shows potential as a feasible option, greener, less medical waste, and more sustainable.

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Section: Resultssupporting

confidence: 92%

Excellent Characteristics of Environmentally Friendly 3D-Printed Nasopharyngeal Swabs for Medical Sample Collection

Mamba’udin,

Handayani,

Triawan

et al. 2023

Polymers

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“…The objects with a flat surface as an initial layer parallel to the build platform are challenging, and the dimensional accuracy is lower along the z -axis. This is similar to the findings reported by earlier research (Boca et al , 2021; Unkovskiy et al , 2018b). The key findings of the study include the following: The layer height and print orientation are significant factors for surface roughness.…”

Section: Discussionsupporting

confidence: 93%

“…The principle is used to develop various methods, including stereolithography (SLA), digital light processing (DLP), liquid crystal display (LCD) printing, etc. (Boca et al , 2021). In the case of SLA, the light source is an ultraviolet laser beam controlled by galvanometers.…”

Section: Introductionmentioning

confidence: 99%

Optimization of dimensional accuracy and surface roughness in m-SLA using response surface methodology

Singh

Jain

Chaudhary

et al. 2023

RPJ

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Purpose This paper aims to investigate the dimensional accuracy and surface roughness of printed masked stereolithography (m-SLA) parts. The fabricated specimens of photosensitive polymer resin have complex shapes and various features. The influence of four process parameters of m-SLA, including layer height, exposure time, light-off delay and print orientation, is studied on response characteristics. Design/methodology/approach The Box–Behnken design of response surface methodology is used to examine the effect of process parameters on the shrinkage of various geometrical dimensions like diameter, length, width, and height of different features in a complex shape. Additionally, a multi-response optimization has been carried out using the desirability function to minimize the surface roughness and printing time and maximize the dimensional accuracy. Findings The layer height and print orientation influence the surface roughness of parts. An increase in layer height results in increased surface roughness, and the orientation parallel to the z-axis of the machine gives the highest surface roughness. The dimensional accuracy of m-SLA parts is influenced by layer height, exposure time, and print orientation. Although not significant in dimensional accuracy and surface roughness, the light-off delay can affect printing time apart from other parameters like layer height and print orientation. Originality/value The effect of layer height and print orientation on dimensional accuracy, printing time, and surface roughness is investigated by researchers using simple shapes in other vat photopolymerization techniques. The present work is focused on studying the effect of these parameters and additional parameters like light-off delay in complicated geometrical parts in m-SLA.

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“…[26] Other methods working with photosensitive resins are digital light processing (DLP), liquid crystal display (LCD), multijet printing (MJP), two-photon polymerization (2TPP), continuous liquid interface production (CLIP), etc., using different strategies to illuminate the liquid resin at defined positions. [27] Although these photopolymerization methods can usually create much finer structures than FDM, especially in case of 2TPP, they nevertheless may have problems with dimensional accuracy [28,29] and aging. [30,31] Powder-bed methods can work with polymers, metals, or even polymer/metal hybrid objects.…”

Section: Polymer-based 3d Printing Techniquesmentioning

confidence: 99%

Recent Developments in Additive Manufacturing of Conductive Polymer Composites

Błachowicz

Ehrmann²,

Ehrmann

2023

Macro Materials & Eng

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Additive manufacturing, also named 3D printing, can be used to create objects from diverse polymers, metals, and other materials in diverse shapes and dimensions. If special physical or chemical properties are necessitated, using corresponding feedstock enables varying such properties in a broad range. Besides choosing a suitable base material, often composite materials are used for specific applications. Here, an overview of recent developments in 3D printing of polymer composites with conductive properties is given. After a definition of conductivity ranges and the respective potential applications, additive manufacturing methods applicable for these polymer composites as well as potential resistivity or resistance measurement methods are reported. An overview of the most recent reports of 3D printing polymer composites with different conductive fillers is followed by a summary of the applications found in the recent literature.

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The Printing Parameters Effects on the Dimensional Accuracy of the Parts Made of Photosensitive Resin

Cited by 6 publications

References 2 publications

Excellent Characteristics of Environmentally Friendly 3D-Printed Nasopharyngeal Swabs for Medical Sample Collection

Excellent Characteristics of Environmentally Friendly 3D-Printed Nasopharyngeal Swabs for Medical Sample Collection

Optimization of dimensional accuracy and surface roughness in m-SLA using response surface methodology

Recent Developments in Additive Manufacturing of Conductive Polymer Composites

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