subject:(Water Jet Impact)

Brigham Young University

1. Smith, Zachary Crawford. Inversion Characteristics of a Buoyant Cylindrical Puck During Oblique Water Impact.

Degree: MS, 2016, Brigham Young University

URL: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=7107&context=etd

► The Apollo Command Module had a tendency to flip over upon impact with the ocean surface after returning from space (9/19 times). In an effort… (more)

Subjects/Keywords: Apollo; splashdown; inversion; water impact; water entry; buoyancy; water jet; jet impingement; Mechanical Engineering

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APA (6^th Edition):

Smith, Z. C. (2016). Inversion Characteristics of a Buoyant Cylindrical Puck During Oblique Water Impact. (Masters Thesis). Brigham Young University. Retrieved from https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=7107&context=etd

Chicago Manual of Style (16^th Edition):

Smith, Zachary Crawford. “Inversion Characteristics of a Buoyant Cylindrical Puck During Oblique Water Impact.” 2016. Masters Thesis, Brigham Young University. Accessed April 11, 2021. https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=7107&context=etd.

MLA Handbook (7^th Edition):

Smith, Zachary Crawford. “Inversion Characteristics of a Buoyant Cylindrical Puck During Oblique Water Impact.” 2016. Web. 11 Apr 2021.

Vancouver:

Smith ZC. Inversion Characteristics of a Buoyant Cylindrical Puck During Oblique Water Impact. [Internet] [Masters thesis]. Brigham Young University; 2016. [cited 2021 Apr 11]. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=7107&context=etd.

Council of Science Editors:

Smith ZC. Inversion Characteristics of a Buoyant Cylindrical Puck During Oblique Water Impact. [Masters Thesis]. Brigham Young University; 2016. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=7107&context=etd

Universidad de Navarra

2. [No author]. Study of physical, chemical and microstructural characteristics of metallic powders with the parameters of water atomization process.

Degree: 2014, Universidad de Navarra

URL: http://hdl.handle.net/10171/37134

► In P/M industry, the metal powders are the main raw material. There are many methods available for powder production, out of which WA is one… (more)

▼ In P/M industry, the metal powders are the main raw material. There are many methods available for powder production, out of which WA is one of the most attractive and important processes. The knowledge about fragmentation mechanism in WA is limited. The literature mainly focuses on the description of the influence of some fundamental variables (e.g. water pressure, melt superheating, melt-to-water mass flow rate ratio, etc.) on powder properties, but a fundamental theory is lacking. To better control WA process and the powder characteristics, it is necessary a deeper understanding of the metal particle formation mechanism. The main objective of this thesis is to study experimentally and theoretically the WA of liquid metals in order to improve our present knowledge of the process. A set of experiments was conducted with different metals and alloys. Based on the results, a new model is proposed to calculate the median particle size (D50) of atomized particles. The new model predicts the particle size for different metals considering the influence of the different operational variables, geometrical parameters and physicochemical properties of the melt. Moreover, the water sprays used for atomization have been characterised. High Speed Imaging has been applied to reveal the internal structure of the water jet and Global Sizing Velocimetry (GSV) allowed quantifying the velocity and size of the water droplets. This information was not available before in the literature for the high pressure range typically used in WA. Those data were related with the particle size and shape of the powders. In particular, new concepts to explain the particle shape of water atomised powders (e.g. the increase of the irregularity with the particle size) are proposed. Finally, the instability and breakup mechanism of a free fall liquid metal jet before reaching the atomisation zone were experimentally studied with the help of High Speed Imaging. Advisors/Committee Members: Martin, J.M. (José Manuel) (advisor).

Subjects/Keywords: Water atomization.; Water pressure.; Superheat.; Bleed pressure.; Jet impact angle.; Jet Length

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APA (6^th Edition):

author], [. (2014). Study of physical, chemical and microstructural characteristics of metallic powders with the parameters of water atomization process. (Thesis). Universidad de Navarra. Retrieved from http://hdl.handle.net/10171/37134

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

author], [No. “Study of physical, chemical and microstructural characteristics of metallic powders with the parameters of water atomization process. ” 2014. Thesis, Universidad de Navarra. Accessed April 11, 2021. http://hdl.handle.net/10171/37134.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

author], [No. “Study of physical, chemical and microstructural characteristics of metallic powders with the parameters of water atomization process. ” 2014. Web. 11 Apr 2021.

Vancouver:

author] [. Study of physical, chemical and microstructural characteristics of metallic powders with the parameters of water atomization process. [Internet] [Thesis]. Universidad de Navarra; 2014. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/10171/37134.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

author] [. Study of physical, chemical and microstructural characteristics of metallic powders with the parameters of water atomization process. [Thesis]. Universidad de Navarra; 2014. Available from: http://hdl.handle.net/10171/37134

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Manchester

3. Clitheroe, Suzanne Linda. The physical and microstructural properties of peened austenitic stainless steel.

Degree: 2011, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:125921

► Surface treatments used to improve the life of a material known as peening are already extensively used in industry. The main aim of peening is… (more)

▼ Surface treatments used to improve the life of a material known as peening are already extensively used in industry. The main aim of peening is to introduce compressive resiudal stress to the surface and subsurface of a metallic material, however literature also includes a number of microstructural and mechanical effects that peening introduces to a material when the compressive residual stress is established.The aim of this dissertation is compare and contrast the mechanical and microstructural effects of a current industrial peening method called shot peening, with three new increasingly competitive surface treatments. These are laser shock peening, ultrasonic impact treatment and water jet cavitation peening. The surface finish, and changes in microstructure, hardness depth profile, residual stress depth profile and plastic work depth profile of the four surface treatments are analysed. The effect of the peening parameters on the material is also determined, such as length of time of treatment, shot size, step size, direction of treatment, and irradiance per centimetre squared.The effect of peening on the residual stress depth profile of a gas tungsten eight pass grooved weld is also determined. Welding is a known region of early failure of material, with one of the factors affecting this being the introduction of tensile residual stress to the surface and near surface of the weld. An analysis to determine if peening the welded region alters the residual stress was carried out.In all experiments in this dissertation, the material that was used was austenitic stainless steel, as this material is highly used, especially within the nuclear industry.The results of this dissertation show that different peening types and peenign parameters produce a variety of surface, microstructural and mechanical effects to austenitic stainless steel. Peening of an aaustenitic stainless steel welded region results in teh near surface tensile residual stress to alter to ccompressive residual stress. Advisors/Committee Members: Withers, Philip.

Subjects/Keywords: peening, austenitic stainless steel, shot peening, laser shock peening, ultrasonic impact treatment, water jet cavitation peening; residual stress, surface finish, hardness, plastic work, microstructure, welds

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Clitheroe, S. L. (2011). The physical and microstructural properties of peened austenitic stainless steel. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:125921

Chicago Manual of Style (16^th Edition):

Clitheroe, Suzanne Linda. “The physical and microstructural properties of peened austenitic stainless steel.” 2011. Doctoral Dissertation, University of Manchester. Accessed April 11, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:125921.

MLA Handbook (7^th Edition):

Clitheroe, Suzanne Linda. “The physical and microstructural properties of peened austenitic stainless steel.” 2011. Web. 11 Apr 2021.

Vancouver:

Clitheroe SL. The physical and microstructural properties of peened austenitic stainless steel. [Internet] [Doctoral dissertation]. University of Manchester; 2011. [cited 2021 Apr 11]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:125921.

Council of Science Editors:

Clitheroe SL. The physical and microstructural properties of peened austenitic stainless steel. [Doctoral Dissertation]. University of Manchester; 2011. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:125921

University of Manchester

4. Clitheroe, Linda Suzanne. The physical and microstructural properties of peened austenitic stainless steel.

Degree: PhD, 2011, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/the-physical-and-microstructural-properties-of-peened-austenitic-stainless-steel(2576543d-5d47-4a41-9490-09eb1caf7204).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553274

► Surface treatments used to improve the life of a material known as peening are already extensively used in industry. The main aim of peening is… (more)

▼ Surface treatments used to improve the life of a material known as peening are already extensively used in industry. The main aim of peening is to introduce compressive resiudal stress to the surface and subsurface of a metallic material, however literature also includes a number of microstructural and mechanical effects that peening introduces to a material when the compressive residual stress is established. The aim of this dissertation is compare and contrast the mechanical and microstructural effects of a current industrial peening method called shot peening, with three new increasingly competitive surface treatments. These are laser shock peening, ultrasonic impact treatment and water jet cavitation peening. The surface finish, and changes in microstructure, hardness depth profile, residual stress depth profile and plastic work depth profile of the four surface treatments are analysed. The effect of the peening parameters on the material is also determined, such as length of time of treatment, shot size, step size, direction of treatment, and irradiance per centimetre squared. The effect of peening on the residual stress depth profile of a gas tungsten eight pass grooved weld is also determined. Welding is a known region of early failure of material, with one of the factors affecting this being the introduction of tensile residual stress to the surface and near surface of the weld. An analysis to determine if peening the welded region alters the residual stress was carried out. In all experiments in this dissertation, the material that was used was austenitic stainless steel, as this material is highly used, especially within the nuclear industry. The results of this dissertation show that different peening types and peenign parameters produce a variety of surface, microstructural and mechanical effects to austenitic stainless steel. Peening of an aaustenitic stainless steel welded region results in teh near surface tensile residual stress to alter to ccompressive residual stress.

Subjects/Keywords: 669.95142; peening; austenitic stainless steel; shot peening; laser shock peening; ultrasonic impact treatment; water jet cavitation peening; residual stress; surface finish; hardness; plastic work; microstructure; welds

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Clitheroe, L. S. (2011). The physical and microstructural properties of peened austenitic stainless steel. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/the-physical-and-microstructural-properties-of-peened-austenitic-stainless-steel(2576543d-5d47-4a41-9490-09eb1caf7204).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553274

Chicago Manual of Style (16^th Edition):

Clitheroe, Linda Suzanne. “The physical and microstructural properties of peened austenitic stainless steel.” 2011. Doctoral Dissertation, University of Manchester. Accessed April 11, 2021. https://www.research.manchester.ac.uk/portal/en/theses/the-physical-and-microstructural-properties-of-peened-austenitic-stainless-steel(2576543d-5d47-4a41-9490-09eb1caf7204).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553274.

MLA Handbook (7^th Edition):

Clitheroe, Linda Suzanne. “The physical and microstructural properties of peened austenitic stainless steel.” 2011. Web. 11 Apr 2021.

Vancouver:

Clitheroe LS. The physical and microstructural properties of peened austenitic stainless steel. [Internet] [Doctoral dissertation]. University of Manchester; 2011. [cited 2021 Apr 11]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/the-physical-and-microstructural-properties-of-peened-austenitic-stainless-steel(2576543d-5d47-4a41-9490-09eb1caf7204).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553274.

Council of Science Editors:

Clitheroe LS. The physical and microstructural properties of peened austenitic stainless steel. [Doctoral Dissertation]. University of Manchester; 2011. Available from: https://www.research.manchester.ac.uk/portal/en/theses/the-physical-and-microstructural-properties-of-peened-austenitic-stainless-steel(2576543d-5d47-4a41-9490-09eb1caf7204).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553274

5. Dhiman, Rajeev. Splashing and Breakup of Droplets Impacting on a Solid Surface.

Degree: 2009, University of Toronto

URL: http://hdl.handle.net/1807/17753

►

Two new mechanisms of droplet splashing and breakup during impact have been identified and analyzed. One is the internal rupture of spreading droplet film through… (more)

▼

Two new mechanisms of droplet splashing and breakup during impact have been identified and analyzed. One is the internal rupture of spreading droplet film through formation of holes, and the other is the splashing of droplet due to its freezing during spreading. The mechanism of film rupture was investigated by two different methods. In the first method, circular water films were produced by directing a 1 mm diameter water jet onto a flat, horizontal plate for 10 ms. In the second method, films were produced by making 0.6 mm water droplets impact a solid surface mounted on the rim of a rotating flywheel. Substrate wettability was varied over a wide range, including superhydrophobic. In both cases, the tendency to film rupture first increased and then decreased with contact angle. A thermodynamic stability analysis predicted this behavior by showing that films would be stable at very small or very large contact angle, but unstable in between. Film rupture was also found to be promoted by increasing surface roughness or decreasing film thickness. To study the effect of solidification, the impact of molten tin droplets (0.6 mm diameter) on solid surfaces was observed for a range of impact velocities (10 to 30 m/s), substrate temperatures (25 to 200°C) and substrate materials (stainless steel, aluminum and glass) using the rotating flywheel apparatus. Droplets splashed extensively on a cold surface but on a hot surface there was no splashing. Splashing could be completely suppressed by either increasing the substrate temperature or reducing its thermal diffusivity. An analytical model was developed to predict this splashing behavior. The above two theories of freezing-induced splashing and film rupture were combined to predict the morphology of splats typically observed in a thermal spray process. A dimensionless solidification parameter, which takes into account factors such as the droplet diameter and velocity, substrate temperature, splat and substrate thermophysical properties, and thermal contact resistance between the two, was developed. Predictions from the model were compared with a wide range of experimental data and found to agree well.

PhD

Advisors/Committee Members: Chandra, Sanjeev, Mechanical and Industrial Engineering.

Subjects/Keywords: Fluid Dynamics; Heat Transfer; Droplet Impact; Droplet Splashing; Thermal Spray Coating; Water Jet Impact; 0548

…method, circular water films are produced by the normal impact of a water jet on a solid… …radially-spreading thin liquid films by normal impact of a water jet on solid surfaces of… …to investigate the rupture of thin liquid films by using the normal impact of a water jet… …droplet impact study. Chapter 3 focuses on the water jet impact experiments done in order to… …produced by impacting a 1 mm water jet on a solid surface for 10 ms. The process of impact, and…

10 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dhiman, R. (2009). Splashing and Breakup of Droplets Impacting on a Solid Surface. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/17753

Chicago Manual of Style (16^th Edition):

Dhiman, Rajeev. “Splashing and Breakup of Droplets Impacting on a Solid Surface.” 2009. Doctoral Dissertation, University of Toronto. Accessed April 11, 2021. http://hdl.handle.net/1807/17753.

MLA Handbook (7^th Edition):

Dhiman, Rajeev. “Splashing and Breakup of Droplets Impacting on a Solid Surface.” 2009. Web. 11 Apr 2021.

Vancouver:

Dhiman R. Splashing and Breakup of Droplets Impacting on a Solid Surface. [Internet] [Doctoral dissertation]. University of Toronto; 2009. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1807/17753.

Council of Science Editors:

Dhiman R. Splashing and Breakup of Droplets Impacting on a Solid Surface. [Doctoral Dissertation]. University of Toronto; 2009. Available from: http://hdl.handle.net/1807/17753

Queensland University of Technology

6. Gudimetla, Prasad. Abrasive waterjet cutting of polycrystalline alumina ceramics-modelling, process optimisation & finite element analysis.

Degree: 2001, Queensland University of Technology

URL: http://eprints.qut.edu.au/36160/

Subjects/Keywords: Water jet cutting; Ceramics cutting; advance manufacturing; abrasive waterjet cutting; alumina ceramics; optimisation; finite element modeling; ABAQUS/explicit; impact analysis; erosion mechanics; material removal; thesis; doctoral

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gudimetla, P. (2001). Abrasive waterjet cutting of polycrystalline alumina ceramics-modelling, process optimisation & finite element analysis. (Thesis). Queensland University of Technology. Retrieved from http://eprints.qut.edu.au/36160/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gudimetla, Prasad. “Abrasive waterjet cutting of polycrystalline alumina ceramics-modelling, process optimisation & finite element analysis.” 2001. Thesis, Queensland University of Technology. Accessed April 11, 2021. http://eprints.qut.edu.au/36160/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gudimetla, Prasad. “Abrasive waterjet cutting of polycrystalline alumina ceramics-modelling, process optimisation & finite element analysis.” 2001. Web. 11 Apr 2021.

Vancouver:

Gudimetla P. Abrasive waterjet cutting of polycrystalline alumina ceramics-modelling, process optimisation & finite element analysis. [Internet] [Thesis]. Queensland University of Technology; 2001. [cited 2021 Apr 11]. Available from: http://eprints.qut.edu.au/36160/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gudimetla P. Abrasive waterjet cutting of polycrystalline alumina ceramics-modelling, process optimisation & finite element analysis. [Thesis]. Queensland University of Technology; 2001. Available from: http://eprints.qut.edu.au/36160/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New Orleans

7. Zhou, Zhengquan. A Theory and Analysis of Planing Catamarans in Calm and Rough Water.

Degree: PhD, Naval Architecture and Marine Engineering, 2003, University of New Orleans

URL: https://scholarworks.uno.edu/td/28

► A planing catamaran is a high-powered, twin-hull water craft that develops the lift which supports its weight, primarily through hydrodynamic water pressure. Presently, there is… (more)

▼ A planing catamaran is a high-powered, twin-hull water craft that develops the lift which supports its weight, primarily through hydrodynamic water pressure. Presently, there is increasing demand to further develop the catamaran's planing and seakeeping characteristics so that it is more effectively applied in today's modern military and pleasure craft, and offshore industry supply vessels. Over the course of the past ten years, Vorus (1994,1996,1998,2000) has systematically conducted a series of research works on planing craft hydrodynamics. Based on Vorus' planing monohull theory, he has developed and implemented a first order nonlinear model for planing catamarans, embodied in the computer code CatSea. This model is currently applied in planing catamaran design. However, due to the greater complexity of the catamaran flow physics relative to the monohull, Vorus's (first order) catamaran model implemented some important approximations and simplifications which were not considered necessary in the monohull work. The research of this thesis is for relieving the initially implemented approximations in Vorus's first order planing catamaran theory, and further developing and extending the theory and application beyond that currently in use in CatSea. This has been achieved through a detailed theoretical analysis, algorithm development, and careful coding. The research result is a new, complete second order nonlinear hydrodynamic theory for planing catamarans. A detailed numerical comparison of the Vorus's first order nonlinear theory and the second order nonlinear theory developed here is carried out. The second order nonlinear theory and algorithms have been incorporated into a new catamaran design code (NewCat). A detailed mathematical formulation of the base first order CatSea theory, followed by the extended second order theory, is completely documented in this thesis. Advisors/Committee Members: Vorus, William, Wei, Dongming, Falzarano, Jeffrey.

Subjects/Keywords: vortex strength distribution; random wave; nonlinear wave; high speed jet flow; water jet; fast ship; vessel design; drag and resistance dynamic lift; high speed craft; Planing craft; planing boat; impact hydrodynamics; steady planing; seakeeping; slender body theory; time marching; singular integral; special function; ship motion

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zhou, Z. (2003). A Theory and Analysis of Planing Catamarans in Calm and Rough Water. (Doctoral Dissertation). University of New Orleans. Retrieved from https://scholarworks.uno.edu/td/28

Chicago Manual of Style (16^th Edition):

Zhou, Zhengquan. “A Theory and Analysis of Planing Catamarans in Calm and Rough Water.” 2003. Doctoral Dissertation, University of New Orleans. Accessed April 11, 2021. https://scholarworks.uno.edu/td/28.

MLA Handbook (7^th Edition):

Zhou, Zhengquan. “A Theory and Analysis of Planing Catamarans in Calm and Rough Water.” 2003. Web. 11 Apr 2021.

Vancouver:

Zhou Z. A Theory and Analysis of Planing Catamarans in Calm and Rough Water. [Internet] [Doctoral dissertation]. University of New Orleans; 2003. [cited 2021 Apr 11]. Available from: https://scholarworks.uno.edu/td/28.

Council of Science Editors:

Zhou Z. A Theory and Analysis of Planing Catamarans in Calm and Rough Water. [Doctoral Dissertation]. University of New Orleans; 2003. Available from: https://scholarworks.uno.edu/td/28

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