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A comparative review on cold gas dynamic spraying processes and technologies

  • Authors: Oyinbo, Sunday Temitope , Jen, Tien-Chien
  • Date: 2020
  • Subjects: Cold gas dynamic spraying , Spraying parameters , Deformatiom mechanism
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/436831 , uj:37907 , Citation: Oyinbo, S.T. & Jen, T.C. 2020. A comparative review on cold gas dynamic spraying processes and technologies. , DOI: https://doi.org/10.1051/mfreview/2019023
  • Description: Abstract: Cold gas dynamic spraying (CGDS) is a relatively new technology of cold spraying techniques that uses converging-diverging (De Laval) nozzle at a supersonic velocity to accelerate different solid powders towards a substrate where it plastically deforms on the substrate. This deformation results in adhesion to the surface. Several materials with viable deposition capability have been processed through cold spraying, including metals, ceramics, composite materials, and polymers, thereby creating a wide range of opportunities towards harnessing various properties. CGDS is one of the innovative cold spraying processes with fast-growing scientific interests and industrial applications in the field of aerospace, automotive and biotechnology, over the past years. Cold gas spraying with a wide range of materials offers corrosion protection and results in increases in mechanical durability and wear resistance. It creates components with different thermal and electrical conductivities than that substrates would yield, or produces coatings on the substrate components as thermal insulators and high fatigue-strength coatings, and for clearance control, restoration and repairing, or prostheses with improved wear, and produces components with attractive appearances. This review extensively exploits the latest developments in the experimental analysis of CGDS processes. Cold gas dynamic spraying system, coating formation and deposit development, description of process parameter and principles, are summarized. Industrial applications and prospectives of CGDS in future research are also commented.
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A molecular dynamics investigation of the temperature effect on the mechanical properties of selected thin films for hydrogen separation

A simulation study of methane-hydrogen gas mixture permeation through nanoporous palladium membrane using molecular dynamics

Atomistic Simulations of Interfacial deformation and bonding mechanism of Pd-Cu Composite Metal Membrane using Cold Gas Dynamic Spray Process

Development of composite metal membrane using cold gas dynamic spray for hydrogen separation : a numerical simulation approach

Effect of frictional boundary conditions and percentage area reduction on the extrusion pressure of aluminum AA6063 alloy using FE analysis modelling

  • Authors: Oyinbo, Sunday Temitope , Jen, Tien-Chien , Ismail, Sikiru O.
  • Date: 2020
  • Subjects: Deformation Analysis , Extrusion Pressure , Friction factor
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/436610 , uj:37879 , Citation: Oyinbo, S.T., Jen, T.C. & Ismail, S.O. 2020. Effect of frictional boundary conditions and percentage area reduction on the extrusion pressure of aluminum AA6063 alloy using FE analysis modelling.
  • Description: Abstract: Finite Element Analysis was carried out to describe the effect of frictional boundary conditions and percentage reduction on deformation modelling (forward extrusion) of Aluminum AA6063 alloy. Curved die profiles of regular polygons (square, hexagonal, heptagonal, and octagonal) were designed using MATLAB R2009b and Autodesk Inventor 2013 to generate the coordinate and the solid CAD model of the die profile respectively form a circular billet. The numerical analysis was performed using DeformTM-3D commercial package with frictional boundary conditions of 0.38 and 0.75 representing the wet and dry condition and varying the percentage reduction of 50%, 70%, and 90%. The results of the temperature distribution, effective stress, effective strain, and strain rate were reported. As the percentage area reduction increases, the extrusion pressure also increases with an increasing frictional condition, and die length. Also, extrusion pressure decreases when the side of the polygon increases from square-shaped section follow by hexagonal shaped-section and least in octagonal shaped-section for both friction factors and percentage area reductions. For a given percentage reduction and cross-sectional area, there is no distinct difference between the predictive loads for the shaped-polygons. When the result of this analysis is compared with the experimental results from the literature, it is evident that DeformTM-3D is an effective tool for finite element analysis of non-isothermal deformation processes.
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Effect of frictional boundary conditions and percentage area reduction on the extrusion pressure of Aluminum AA6063 alloy using FE analysis modelling

  • Authors: Oyinbo, Sunday Temitope , Jen, Tien-Chien , Ismail, Sikiru O.
  • Date: 2020
  • Subjects: Deformation Analysis , Extrusion Pressure , Friction factor
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/439419 , uj:38230 , Oyinbo, S.T., Jen, T., Ismail, S.O. 2020: Effect of frictional boundary conditions and percentage area reduction on the extrusion pressure of Aluminum AA6063 alloy using FE analysis modelling.
  • Description: Abstract: , Finite Element Analysis was carried out to describe the effect of frictional boundary conditions and percentage reduction on deformation modelling (forward extrusion) of Aluminum AA6063 alloy. Curved die profiles of regular polygons (square, hexagonal, heptagonal, and octagonal) were designed using MATLAB R2009b and Autodesk Inventor 2013 to generate the coordinate and the solid CAD model of the die profile respectively form a circular billet. The numerical analysis was performed using DeformTM-3D commercial package with frictional boundary conditions of 0.38 and 0.75 representing the wet and dry condition and varying the percentage reduction of 50%, 70%, and 90%. The results of the temperature distribution, effective stress, effective strain, and strain rate were reported. As the percentage area reduction increases, the extrusion pressure also increases with an increasing frictional condition, and die length. Also, extrusion pressure decreases when the side of the polygon increases from square-shaped section follow by hexagonal shaped-section and least in octagonal shaped-section for both friction factors and percentage area reductions. For a given percentage reduction and cross-sectional area, there is no distinct difference between the predictive loads for the shaped-polygons. When the result of this analysis is compared with the experimental results from the literature, it is evident that DeformTM-3D is an effective tool for finite element analysis of non-isothermal deformation processes.
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Experimental and numerical prediction of extrusion load at different lubricating conditions of aluminium 6063 alloy in backward cup extrusion

  • Authors: Oyinbo, Sunday Temitope , Ikumapayi, Omolayo M. , Jen, Tien-Chien , Ismail, Sikiru O.
  • Date: 2020
  • Subjects: Extrusion load , Lubricants , Strain rate
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/436602 , uj:37878 , Citation: Oyinbo, S.T. et al. 2020. Experimental and numerical prediction of extrusion load at different lubricating conditions of aluminium 6063 alloy in backward cup extrusion.
  • Description: Abstract: In the present research work using a backward cup extrusion (BCE) die profile, different lubricating conditions on aluminum alloy AA6063 have been experimentally and numerically investigated to predict the extrusion load. It was obvious that due to an increase in applications of the extrusion process, many researchers have worked on the extrusion process using different methods to achieve their aims. This experiment was conducted with three different lubricants namely: Castor oil, Palm Oil and tropical coconut oil; as well as without lubricants. Different lubricating conditions were employed of varying strain rates ranges from 1.5x10-3s-1, 2.0x10-3s-1, 2.5x10-3s-1, and 3.0x10-3s-1; Numerical analysis and simulation for dry and lubricated conditions during extrusion load were also performed using DEFORM 3D software. The results show that prediction extrusion load increases with increasing strain rates. The maximum extrusion load was found to be higher for extrusion without lubricants. In all cases of strain rate, palm oil showed a lower extrusion load compared to the other lubricants. Castor oil indicated the highest extrusion load when the experiment is carried out using lubrication. There was a consistent agreement between the result gotten from the experiment and simulation result of the extrusion load-strike curve.
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Feasibility of numerical simulation methods on the Cold Gas Dynamic Spray (CGDS) Deposition process for ductile materials

  • Authors: Oyinbo, Sunday Temitope , Jen, Tien-Chien
  • Date: 2020
  • Subjects: Numerical models , Deformation , Plastic strain
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/457885 , uj:40649 , Citation: Oyinbo, S.T. & Jen, T.C. 2020. Feasibility of numerical simulation methods on the Cold Gas Dynamic Spray (CGDS) Deposition process for ductile materials. , DOI: https://doi.org/10.1051/mfreview/2020023
  • Description: Abstract: The techniques of cold gas dynamic spray (CGDS) coating involve the deposition of solid, high speed micron to nano particles onto a substrate. In contrast to a thermal spray, CGDS does not melt particles to retain their physico-chemical properties. There have been many advantages in developing microscopic analysis of deformation mechanisms with numerical simulation methods. Therefore, this study focuses on four cardinal numerical methods of analysis which are: Lagrangian, Smoothed Particles Hydrodynamics (SPH), Arbitrary Lagrangian-Eulerian (ALE), and Coupled Eulerian-Lagrangian (CEL) to examine the Cold Gas Dynamic Spray (CGDS) deposition system by simulating and analyzing the contact/impact problem at deformation zone using ductile materials. The details of these four numerical approaches are explained with some aspects of analysis procedure, model description, material model, boundary conditions, contact algorithm and mesh refinement. It can be observed that the material of the particle greatly influences the deposition and the deformation than the material of the substrate. Concerning the particle, a higher-density material such as Cu has a higher initial kinetic energy, which leads to a larger contact area, a longer contact time and, therefore, better bonding between the particle and the substrate. All the numerical methods studied, however, can be used to analyze the contact/ impact problem at deformation zone during cold gas dynamic spray process.
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Hydrogen evolution reaction in an alkaline environment through nanoscale Ni, Pt, NiO, Fe/Ni and Pt/Ni surfaces: Reactive molecular dynamics simulation

Molecular Dynamics Investigation of temperature effect and surface configurations on multiple impacts plastic deformation in a palladium-copper composite metal membrane (CMM) : a Cold Gas Dynamic Spray (CGDS) process

Molecular dynamics simulation of dislocation plasticity mechanism of nanoscale ductile materials in the cold gas dynamic spray process

Multilayer separation effects on mos2 membranes in water desalination

  • Authors: Oviroh, Peter Ozaveshe , Oyinbo, Sunday Temitope , Karimzadeh, Sina , Tien-Chien Jen
  • Date: 2021
  • Subjects: Desalination , Membrane , MoS2
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/495446 , uj:45018 , Citation: Oviroh, P.O., Oyinbo, S.T., Karimzadeh, S. and Jen, T.C., 2021, November. Multilayer Separation Effects on MoS2 Membranes in Water Desalination. In ASME International Mechanical Engineering Congress and Exposition (Vol. 85574, p. V003T03A047). American Society of Mechanical Engineers. , DOI: https://doi.org/10.1115/IMECE2021-69156
  • Description: Abstract: Climate change and its related effects are imposing severe stress on the current freshwater supplies. This has been exacerbated due to the growth in population, rapid industrialization, and increased energy demand. Increased water requirement is a global challenge. Although more than 70% of the Earth is covered by water, much of it is unusable for human use. Freshwater reservoirs, ponds, and subterranean aquifers account for just 2.5% of the world's overall freshwater availability. Unfortunately, these water supplies are not very unevenly spread. Therefore, the need to augment these supplies through the desalination of seawater or brackish water. Reverse osmosis (RO) is currently the most widespread method of desalination. However, the unit cost of water is still high partly due to the thin-film composite (TFC) polymer membranes used in the current desalination system. Thus the need for low-cost nanomaterials for Water Desalination and Purification. A promising way to meet this demand is to use two-dimensional (2D) nanoporous materials such as graphene and MoS2 to minimize energy consumption during the desalination process. New nanotechnology methodologies that apply reverse osmosis have been developed. Among some of these technologies is using 2D materials such as graphene and MoS2, which have been studied extensively for water desalination. Single-layer nanoporous 2D materials such as graphene and MoS2 promises better filtrations in the water channel. Although single-layer MoS2 (SL_MoS2) membrane have much promise in the RO desalination membrane, multilayer MoS2 are simpler to make and more cost-efficient. Building on the SL_MoS2 membrane knowledge, we have used the molecular dynamics method (MD) to explore the effects of multilayer MoS2 in water desalination. This comparison is made as a function of the pore size, water flow rate and salt rejection. In addition, we also looked at the effect of the increased interlayer spacing between layers of the nanoporous 2D membrane and then made the comparison.
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Reactive molecular dynamics simulations of nickel-based heterometallic catalysts for hydrogen evolution in an alkaline KOH solution

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