Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 86 for “"Jetting"”.
-
Underwater Robotic Propulsors Inspired by Jetting Jellyfish
… bodies and smart actuation. In this thesis, jetting jellyfish were utilized as the inspiration to understand the fundamentals of this new form of propulsion and subsequently translate the understanding onto the engineered platform to validate the hypothesis and construct robust models. …
-
Process-Property Characterization for Multi-Material Jetting Applications
Material jetting (MJ) is an additive manufacturing (AM) process that involves the selective jetting of a liquid material into the shape of a layer and subsequent solidification, often via ultraviolet (UV) irradiation, in a layer-wise fashion. The MJ process has the potential to emerge as a robust …
-
Delivery of macromolecule therapeutics via jetting in the gastrointestinal tract
… by mouth. To that end, needleless delivery, or jetting, has been identified as a promising approach. This work describes mechanistic modeling of jets, an empirical evaluation of jet interaction with gastrointestinal tissues, a millimeter-scale jetting device capable of autonomous drug delivery, …
-
Improving Ink Feedback Control System for Vision Controlled Jetting 3D Printer
Vision-Controlled Jetting (VCJ) is one of the 3D-printing techniques that operates by repeatedly depositing photopolymer materials in 2 dimensions onto a printing plane, solidifying them using UV light, and scanning the printing plane’s topography to readjust the printing layer accordingly. It has …
-
Additive Manufacturing of Copper via Binder Jetting of Copper Nanoparticle Inks
… process and material system based on binder jetting Additive Manufacturing to process pure copper. In order to reduce the sintered part porosity and shape distortion during sintering, the powder bed voids were filled with smaller particles to improve the powder packing density. Through the …
-
Modeling of Material Jetting Additive Manufacturing with Applications to Paper Machine Fabrics
Material jetting-based (MJ) additive manufacturing (AM) is a promising manufacturing technology uniquely suited to enable new innovation, especially at the mesoscale, like novel paper machine press fabrics. The objective of this research is to improve the understanding of mesoscale feature …
-
Parallel nano-manufacturing via electro-hydrodynamic jetting from externally-fed emitter arrays
… emitter arrays for electro-hydrodynamic jetting. We microfabricate monolithic, emitter blades that consist of pointed structures etched out of silicon using DRIE and assemble these into a slotted base to form two-dimensional arrays. By patterning the emitter surface with appropriately …
-
Binder-Powder Interaction: Investigating the Process-Property Relations in Metal Binder Jetting
Binder jetting (BJT) is a powder bed based additive manufacturing (AM) process where the interaction of inkjetted droplets of a binder and particles in the powder bed create 3D geometries in a layerwise fashion. The fabricated green parts are usually thermally post-processed for densification and …
-
Jetting dynamics of bursting bubbles coated with protein–surfactant or polymeric compound layers
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
-
Characterization and Modeling of the Thermal Properties of Photopolymers for Material Jetting Processes
… parts is of particular interest since material jetting additive manufacturing has the ability to deposit multiple, functionally graded materials on a pixel by pixel basis. Although there is existing literature on other PolyJet material properties, there is limited research on their thermal …
-
Effects of Hot Isostatic Pressing on Copper Parts Additively Manufactured via Binder Jetting
… lasers or electron beams. This makes Binder Jetting a better alternative as it separates part creation (binding together of powders) from energy supply (post-process sintering). However, it is challenging to fabricate parts of high density using this method due to low packing density of …
-
Development of Jetting Techniques for the Delivery of Mesenchymal Stromal Cells for Therapeutic Applications
… or scaffold transplantation, by using a jetting methodology called bio-electrospraying (BES) to deliver cells directly to an injured region. A major difficulty associated with BES is reproducibility of data between different labs. This is due to the type of apparatus used as electrospray …
-
Testbeds for Advancement of Powder Bed Additive Manufacturing with Application to Reactive Binder Jetting of Ceramics
… ensuring quality parts are produced via binder jetting, but low powder bed densities and a lack of understanding of the effect of recoating parameters have limited the applicability of binder jet components. Furthermore, polymer-based binders are most commonly used despite the need for a …
-
Influence of Nozzle Pressure, Standoff Distance, and Reinforcing Steel Cage on Water Jetting of CIDH Pile Anomalies
… from cast-in-drilled-hole (CIDH) piles by water jetting was examined. The primary objectives of this research were to examine how reinforcing steel influences water jetting and to evaluate how jetting pressures and standoff distance from the material surface affect water jetting of concrete type …
-
Turbulent fluid jet excavation in cohesive soil : with particular application to jet grouting
… an improved prediction tool that can be used in jetting design. The model is based on the assumption that the velocity distribution in the cutting jet is equivalent to that of a free jet with boundaries corresponding to the dimensions of the cavity excavated in the ground. The shape of the cavity …
-
Oscillating Dispersed-Phase Co-Flow Microfluidic Droplet Generation: Effects on Jet Length and Droplet Size
… a more-stable dripping regime to an instable jetting regime at high d-phase flow rates. We applied nozzle oscillatory motion to generate an axial shear gradient as well as inducing an additional transverse drag force. We hypothesized that the combined effects of axial and transverse drags can …
-
Design and implementation of an automated gamma probe for jet boring uranium mining.
… against each pilot hole's driving layout and jetting recipe. Future work is discussed for use of Monte Carlo modelling and a high activity source to characterize the JBS gamma probe and achieve conversion of gamma counts into U3O8 grade. Cigar Lake is the second highest known grade uranium …
-
Structure-property-processing relationships between polymeric solutions and additive manufacturing for biomedical applications
… namely vat photopolymerization, binder jetting, and powder bed fusion. Binder jetting, vat photopolymerization, and powder bed fusion require different viscosity and powder requirements depending on the printer capabilities, and if the material is neat or in solution. Developing scaling …
-
Investigation of fluidized bed systems using coupled DEM-CFD framework
… also focuses on performing both 2D and 3D jetting fluidized bed simulations having millions of particles; validate/compare results with experiments and to perform heat transfer studies in a jetting fluidized bed system. The results suggest convective and diffusive mixing for a single jet at …
Page 1 of 5