Determination of process parameters in stereolithography using neural network

Lee, Eun-Dok; Sim, Jaesung; Kweon, Hyeog-Jun; Paik, In-Hwan

doi:10.1007/bf02996109

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…The strength of the SLA product is affected by several variables, among which layer thickness, postcuring period, and orientation contribute the most significantly. In addition, numerous processing factors, including hatch spacing, layer thickness, scan speed, and laser power, affect the accuracy of SLA prototypes . To address this issue, efforts have been made by Kunjan et al to optimize these process variables for optimum part strength and establish an empirical link between process variables and part strength using the design of experiments.…”

Section: Conventional 3d Printingmentioning

confidence: 99%

“…In addition, numerous processing factors, including hatch spacing, layer thickness, scan speed, and laser power, affect the accuracy of SLA prototypes. 51 To address this issue, efforts have been made by Kunjan et al 52 to optimize these process variables for optimum part strength and establish an empirical link between process variables and part strength using the design of experiments. They concluded that the hatch spacing, which accounted for 43.11% of the response’s overall variance, had a significant impact on the warpage of the SLA parts.…”

Section: Conventional 3d Printingmentioning

confidence: 99%

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Integration of 3D Printing–Coelectrospinning: Concept Shifting in Biomedical Applications

et al. 2023

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Porous structures with sizes between the submicrometer and nanometer scales can be produced using efficient and adaptable electrospinning technology. However, to approximate desirable structures, the construction lacks mechanical sophistication and conformance and requires three-dimensional solitary or multifunctional structures. The diversity of high-performance polymers and blends has enabled the creation of several porous structural conformations for applications in advanced materials science, particularly in biomedicine. Two promising technologies can be combined, such as electrospinning with 3D printing or additive manufacturing, thereby providing a straightforward yet flexible technique for digitally controlled shape-morphing fabrication. The hierarchical integration of configurations is used to imprint complex shapes and patterns onto mesostructured, stimulus-responsive electrospun fabrics. This technique controls the internal stresses caused by the swelling/contraction mismatch in the in-plane and interlayer regions, which, in turn, controls the morphological characteristics of the electrospun membranes. Major innovations in 3D printing, along with additive manufacturing, have led to the production of materials and scaffold systems for tactile and wearable sensors, filtration structures, sensors for structural health monitoring, tissue engineering, biomedical scaffolds, and optical patterning. This review discusses the synergy between 3D printing and electrospinning as a constituent of specific microfabrication methods for quick structural prototypes that are expected to advance into next-generation constructs. Furthermore, individual techniques, their process parameters, and how the fabricated novel structures are applied holistically in the biomedical field have never been discussed in the literature. In summary, this review offers novel insights into the use of electrospinning and 3D printing as well as their integration for cutting-edge applications in the biomedical field.

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Section: Conventional 3d Printingmentioning

confidence: 99%

Section: Conventional 3d Printingmentioning

confidence: 99%

Integration of 3D Printing–Coelectrospinning: Concept Shifting in Biomedical Applications

et al. 2023

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“…SLA is based on a photochemical process where a UV light beam is projected into a liquid photopolymer resin vat curing it layer-by-layer into a 3D object, figure 2(c). Important parameters in SLA are laser power, scan speed, scan pattern, layer thickness, and resin characteristics [34]. SLA is a relatively quick technique and can produce scaffolds with precise internal architecture and geometries, with resolution in the 50 µm range [35].…”

Section: Stereolithography (Sla)mentioning

confidence: 99%

3D printing of inorganic-biopolymer composites for bone regeneration

et al. 2022

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In most cases, bone injuries heal without complications, however, there is an increasing number of instances where bone healing needs major clinical intervention. Available treatment options have severe drawbacks, such as donor site morbidity and limited availability for autografting. Bone graft substitutes containing growth factors would be a viable alternative, however they have been associated with dose-related safety concerns and lack control over spatial architecture to anatomically match bone defect sites. 3D printing offers a solution to produce patient specific bone graft substitutes that are customized to the patient bone defect with temporal control over the incorporated therapeutics to maximize their efficacy. Inspired by the natural constitution of bone tissue, composites made of inorganic phases, such as nanosilicate particles, calcium phosphate, and bioactive glasses, combined with biopolymer matrices have been investigated as building blocks for the biofabrication of bone constructs. Besides capturing elements of the bone physiological structure, these inorganic/organic composites can be designed for specific cohesivity, rheological and mechanical properties, while both inorganic and organic constituents contribute to the composite bioactivity. This review provides an overview of 3D printed composite biomaterial-inks for bone tissue engineering. Furthermore, key aspects in biomaterial-ink design, 3D printing techniques, and the building blocks for composite biomaterial-inks are summarized.

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“…SLA parameters (such as laser power and scan speed) and general VP parameters ( e.g. , resin characteristics and curing duration) contribute to the overall resolution of final prints [ 20 ]. VP printing can circumvent issues associated with other 3D printing technologies, such as avoiding thermal degradation of thermolabile therapeutics [ 21 ].…”

Section: Key Aspects Of Fabricating Parenteral Dosage Forms Via 3d Printingmentioning

confidence: 99%

Recent Advances in 3D Printing for Parenteral Applications

Ivone

Yang

Shen

2021

AAPS J

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3D printing has emerged as an advanced manufacturing technology in the field of pharmaceutical sciences. Despite much focus on enteral applications, there has been a lack of research focused on potential benefits of 3D printing for parenteral applications such as wound dressings, biomedical devices, and regenerative medicines. 3D printing technologies, including fused deposition modeling, vat polymerization, and powder bed printing, allow for rapid prototyping of personalized medications, capable of producing dosage forms with flexible dimensions based on patient anatomy as well as dosage form properties such as porosity. Considerations such as printing properties and material selection play a key role in determining overall printability of the constructs. These parameters also impact drug release kinetics, and mechanical properties of final printed constructs, which play a role in modulating immune response upon insertion in the body. Despite challenges in sterilization of printed constructs, additional post-printing processing procedures, and lack of regulatory guidance, 3D printing will continue to evolve to meet the needs of developing effective, personalized medicines for parenteral applications.

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Determination of process parameters in stereolithography using neural network

Cited by 4 publications

References 10 publications

Integration of 3D Printing–Coelectrospinning: Concept Shifting in Biomedical Applications

Integration of 3D Printing–Coelectrospinning: Concept Shifting in Biomedical Applications

3D printing of inorganic-biopolymer composites for bone regeneration

Recent Advances in 3D Printing for Parenteral Applications

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