A study on the control of the printing accuracy in alumina parts by ceramic stereolithography
2
Citation
26
Reference
10
Related Paper
Citation Trend
Keywords:
Stereolithography
Shrinkage
A review with 40 references covering laser-induced photopoly merization in microsurgery, e.g., in vivo repair of an injured knee (Fig. 1) and in vivo repair or reinforcement of tendon ligaments (Fig. 2); applications of 3D CAD-CAM in surgery to produce high-resolution images of internal body parts via computer-assisted tomography and magnetic resonance ima ging interfaced with rapid prototyping and manufacturing systems and ste reolithographic equipment (Figs.345); and design and manufacturing of or thopaedic implants [involving 3D CAD-CAM systems (Figs.7,8)].The ap plications of photopolymerized resin composites as implants pose severe biological problems and require more intensive studies to achieve a signifi cant progress.Key words: three-dimensional photopolymerization in stereolithography, la ser-induced photopolymerization and 3D stereolithography applications in microsurgery.During the recent decade laser polymerization has found wide application in photocuring [3][4][5].The pos sibility of manufacturing accurate and fast medical mo dels by 3D photopolymerization opens new perspec tives in the manufacturing of medical prototypes (e.g.endoprostheses).
Stereolithography
Cite
Citations (6)
Stereolithography
Cite
Citations (1)
A review with 28 references covering 3D computer-aided de sign (CAD)-computer-aided manufacturing (CAM) devices and techniques used in 3D photopolymerization and micromachining processes applied to make stereolithographic products.The former comprise mechanically scanned devices with a stationary laser spot and optically scanned devices with a moving laser spot, laser types (HeCd; argon-ion) including excimer lasers (Nd:YAG, Nd:YLF) associated with 3D photopolymerization tech niques and stereolithography software.Micromachines are reviewed and micromachining processes are described used to make stereolithographic products.
Stereolithography
Cite
Citations (7)
Stereolithography
Bridge (graph theory)
Cite
Citations (7)
Abstract Additive manufacturing technologies based on stereolithography rely on initiating spatial photopolymerization by using photoinitiators activated by UV-visible light. Many applications requiring printing in water are limited since water-soluble photoinitiators are scarce, and their price is skyrocketing. On the contrary, thermal initiators are widely used in the chemical industry for polymerization processes due to their low cost and simplicity of initiation by heat at low temperatures. However, such initiators were never used in 3D printing technologies, such as vat photopolymerization stereolithography, since localizing the heat at specific printing voxels is impossible. Here we propose using a thermal initiator for 3D printing for localized polymerization processes by near-infrared and visible light irradiation without conventional photoinitiators. This is enabled by using gold nanorods or silver nanoparticles at very low concentrations as photothermal converters in aqueous and non-aqueous mediums. Our proof of concept demonstrates the fabrication of hydrogel and polymeric objects using stereolithography-based 3D printers, vat photopolymerization, and two-photon printing.
Stereolithography
Cite
Citations (11)
In the industrial use of stereolithography, precision is always a problem. The basic phenomenon of solidification shrinkage has not been sufficiently investigated. This study aims at clarifying the initial linear shrinkage of cured resin in a minute volume. Experimental equipment has been developed which measures the time history of the single strand in situ in a stereolithography machine. An analysis model of the time history of a minute volume linear shrinkage was shown using the measured shrinkage of a cured line segment. The relation between the time history of the linear shrinkage and temperature was measured and the shrinkage in the minute volume after irradiation was found to result due to temperature variation. Deformation and linear shrinkage were measured with two scanning orders to control the thermal distribution in layer forming. The effects of thermal distribution were also observed in one layer forming.
Shrinkage
Stereolithography
Cite
Citations (36)
Stereolithography
Shrinkage
Cationic polymerization
Acrylate polymer
Cite
Citations (15)
Stereolithography
Shrinkage
Laser Scanning
Cite
Citations (0)
Three-dimensional (
Stereolithography
Cite
Citations (13)
Molecular insights into PEGDA photopolymerization in SLA 3D printing are revealed through spectroscopic, microscopic and computational studies. The impact of processing parameters on microscale swelling dynamics of hydrogels is investigated.
Stereolithography
Microscale chemistry
Cite
Citations (28)