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Articles 1 - 5 of 5
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The Effects Of Bioinspired Infill Designs And Density On The Compressive Strength Of Parts Produced By Additive Manufacturing Via Fused Deposition Modeling, Joseph D. Long
Electronic Theses and Dissertations
The current state of additive manufacturing (AM) is still primarily used for prototyping and modeling. However, with the increase in available materials and more advanced machines, AM is beginning to become a production process in which ready-to-ship products are being manufactured. This makes it all the more important to effectively and efficiently use the material in AM machines. One of the ways that material usage can be improved upon is more efficiently structuring the infill material that is used. This dissertation reports on the testing and statistical analysis of the compressive modulus of elasticity, the compressive proportional limit, and the …
Lidocaine Mucoadhesive Film Fabrication Using Fused Deposition Modeling 3d Printing, Mohammed Yahya Alyahya
Lidocaine Mucoadhesive Film Fabrication Using Fused Deposition Modeling 3d Printing, Mohammed Yahya Alyahya
Electronic Theses and Dissertations
Hot-melt extrusion and 3D printing are among the recent means of processing techniques adopted in the pharmaceutical industry. These technologies are used as a method of preparing solid dispersions develop complex shapes that are difficult to be obtained using other means of production. In the current research work, many formulations loaded with lidocaine HCl were prepared and extruded using 11mm twin-screw extruder. The extrudate filaments were then fed into a fused deposition modelling (FDM) printer to fabricate mucoadhesive films meant to buccal applications to manage local pain within the oral cavity that requires the intervention with local anesthetics. The printed …
Fused Filament Fabrication 3d Printing Using Low-Melting Alloys., Nirupama Warrier
Fused Filament Fabrication 3d Printing Using Low-Melting Alloys., Nirupama Warrier
Electronic Theses and Dissertations
Fused Filament Fabrication (FFF) 3D printing technology has been a popular method of creating prototypes using plastics in the timeliest and most affordable manner for electronic, automotive, and biomedical applications. 3D printing of metals and alloys using FFF technology could provide low-cost alternatives and solutions to the Laser-Powder Bed Fusion Process (L-PBF) and Binder Jetting processes (BJ). In current work, low melting alloys have been used as a starting material and evaluated for FFF 3D printing using two methodologies. In the first methodology, Sn60Bi40 alloy in the form of wire was used as the feedstock for FFF extrusion and process …
A Multi-Channel 3d-Printed Bioreactor For Evaluation Of Growth And Production In The Microalga Dunaliella Sp, Cristian A. Cox
A Multi-Channel 3d-Printed Bioreactor For Evaluation Of Growth And Production In The Microalga Dunaliella Sp, Cristian A. Cox
Electronic Theses and Dissertations
We explored the capabilities of additive manufacturing using a photo-cured jetted material 3D printer to manufacture a milli-microfluidic device with direct application in microalgae Dunaliella sp growth and intracellular compounds biosynthesis tests. A continuous microbioreactor for microalgae culture was CAD designed and successfully built in 1 hour and 49 minutes using black photopolymer cured by UV and a support material. The microreactor was made up of 2 parts including the bioreactor itself and a microchannel network for culture media fluids and microalgae. Both parts were assembled to form a single unit. Additional optical and auxiliar components were added. An external …
An Experimental Approach To Assess The Impact Of Post Processing Variables On The Mechanical Characteristics Of 3d Printed (Powder Binding Process) Parts, David Impens
Electronic Theses and Dissertations
The study is designed to provide a robust understanding of the mechanical characteristic of a 3D printed part for selected post processing conditions. The `green' printed parts are generally very brittle and porous, therefore, infiltrates are introduced to alter the mechanical characteristics, which will introduce new opportunities for this technology. Exploratory testing is performed to shape the choices for post processing with the infiltrates. Specimen geometry, specific for tensile, compression and flexural testing were rendered in CAD software and printed on the Z-printer 450 (Zp150 powder / Zb59 binder) with three different build orientations (horizontal/ angled /vertical). Results show that …