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.
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Showing 1 to 20 of 25 for “"Waterjet"”.
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Three dimensional milling using an abrasive waterjet
… an investigation of metal milling using abrasive waterjet (AWJ) technology. After reviewing existing methods, a new tool named the Wobbler was tested. The test results showed that a very smooth milled surface could be achieved with this tool when it was operated with the proper …
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Numerical modeling and optimization of waterjet based surface decontamination
… this study is to investigate the high-pressure waterjet based surface decontamination. Our specific objective is to develop a practical procedure for selection of process conditions at given constraints and available knowledge. This investigation is expected to improve information processing in …
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The design of a small and inexpensive abrasive waterjet cutter
The design of a small and inexpensive abrasive waterjet cutter was carried out and documented from the specification of functional requirements through to final design and solid modeling. Starting from the identification of the functional requirements for the machine, several concepts were …
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Experimental and numerical analysis of abrasive waterjet drilling of brittle materials
The interaction between abrasive waterjet (AWJ) and brittle materials, as well as lated machining mechanisms, was studied using a hybrid experimental - numerical analysis approach. First, the machineability of ceramic materials, such as alumina, silicon nitride, silicon carbide, and titanium …
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Experimental investigations and numerical modeling of a mixed flow marine waterjet
Recently, waterjet propulsion has gained great commercial interest as the shipping industry trends toward faster passenger ferries and other fast transport vessels. The work presented in this thesis was part of a larger effort to improve the capabilities and performance of a mixed flow marine …
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The material and energy flow through the abrasive waterjet machining and recycling processes
… material and energy flow through the abrasive waterjet machine and the WARD recycling machine. The goal was to track all of the material, water, abrasive, energy, air, and tooling through the different components of the machining and recycling processes. The material removal was found to be a …
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Optimized Surface Roughening by Pulsed Waterjet for Suitable Adhesion Strength of Plasma Transferred Wire Arc Coating
This study paired the high-pressure pulsed waterjet process and plasma transferred wire arc technology to develop a technique to remanufacture worn-out cylinder bores and give new life to worn-out engines. Plasma transferred wire arc technology is currently being used for engine remanufacturing to …
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Characterization of crack propagation and brittle failure induced by discrete, high velocity waterjet impacts in crystalline rocks, The
Includes bibliographical references (pages 297-304).
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A case study in application of robust design methods to waterjet processes in overhaul and repair of jet engine components
… a new cleaning technique. The new method uses a waterjet in place of a wet abrasive blast using a novaculite slurry solution. The process used to develop high-pressure waterjet cleaning procedures was based on Robust Design methodology. Robust Design uses orthogonal arrays which allow a large …
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A low-cost, high-strength, open-source, rapid prototypeable underactuated robot gripper
… hands. Apart from the actuators and waterjet machining services, the materials for the gripper can be purchased in one McMaster-Carr order. The entire structure can be cut from a single sheet of 1/16" 2024 aluminum and requires one operation on a waterjet machine, which can be found …
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Evaluation, design, and construction of the Wallace Astrophysical Observatory Camera for astronomical observations
… (CNC) lathe, CNC mill, drill press, and a Waterjet (cutting machine). The manufacturing process also required learning of Omax (software for the Waterjet) and MasterCam 9.1 (software for the CNC lathe and CNC mill). The resulting product is WAOcam, which consists of three modules: 1) vacuum …
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Development of icejet-based surface processing technology
… has to replace sand blasting and the ice-waterjet has to replace the abrasive waterjet. Based on these results, technical approaches for surface processing and machining will be improved. A primary advantage of the ice media is movement toward more complete pollution prevention. With this …
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A six-degree of freedom flexural positioning stage
… with low-cost manufacturing processes (such as waterjet machining). The manipulator tolerates ±1 mm actuator misalignment with less than 0.1% full-scale position error. Measurements over a 100x100x100 nm3 work volume displayed resolution better than the sensing capability, 5nm, and open-loop …
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Design of a kickstand-integrated bicycle lock for a bike share program
… each constructed of many planar parts cut on the waterjet from aluminum. The first of these is a lock, which uses a servo-driven double rack and pinion that locks into keyways within the ring of the rho-shaped kickstand. The second is a mechanical retainer mechanism that uses a latching …
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Computational fluid dynamics and experimental study of the hydrodynamics of a bubble column and an air-water jet-stirred cell
… two bubbly flow systems, a bubble column and a waterjet-agitated flotation cell (Hydrojet cell), were studied by means of numerical simulations. In order to validate the bubble column CFD simulations Particle Image Velocimetry (PIV) was used. An experimental investigation about bubble size …
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Development of a connected platform for industrial equipment monitoring to enable predictive maintenance using supervised machine learning methods
… world leader in ultra high pressure industrial waterjet systems for cutting and cleaning with applications from metal to food. Although SHAPE is the technological leader in this space, SHAPE must continuously look toward developing new capabilities to differentiate its products. SHAPE has …
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Anthro Arm : the design of a seven degree of freedom arm with human attributes
… 2d shapes that can easily be cut out using a waterjet and then welded together with high reliability. The resulting arm will become part of a bionic system when combined with an existing bionic hand platform that is being developed in the Intelligent Machines Laboratory at MIT. With a well …
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Design, fabrication, and testing of a three-dimensional, plastically-deformed, monolithic compliant HexFlex Nanomanipulator
… methods of fabrication, such as the abrasive waterjet. New tooling was created in order to selectively define which parts of the delicate mechanism to plastically deform. Once formed, the mechanism was tested to determine if the plastic deformation process in the forming of the mechanism has …
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Development of image based crack measurements, to investigate delamination in different weave Fibre Reinforced Polymers
… were manufactured using the infusion process. Waterjet cutting was used to cut the panels to produce the test specimens. The Double Cantilever Beam (DCB) test was used to measure the Mode I fracture toughness, following the standardised test method ASTM D5528. DCB tests requires two hinge …
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Investigating and prototyping a connected device strategy and solution for industrial equipment manufacturers
Shape Technologies makes industrial waterjet equipment that is purchased and used by customers to process a variety of materials (ranging from metal to food). To date the company has not invested in connecting their machines and as a result no engineering, sales or service processes benefit from …
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