Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (110)
- Technological University Dublin (20)
- University of Central Florida (20)
- Cleveland State University (19)
- California Polytechnic State University, San Luis Obispo (18)
-
- Missouri University of Science and Technology (14)
- Utah State University (12)
- University of Nevada, Las Vegas (7)
- University of South Carolina (6)
- Brigham Young University (5)
- The University of Akron (5)
- Western Kentucky University (5)
- Boise State University (4)
- Loyola Marymount University and Loyola Law School (4)
- Purdue University (4)
- Michigan Technological University (3)
- Old Dominion University (3)
- Portland State University (3)
- University of Texas Rio Grande Valley (3)
- Virginia Commonwealth University (3)
- University of Kentucky (2)
- University of Rhode Island (2)
- Wright State University (2)
- Air Force Institute of Technology (1)
- Arkansas Tech University (1)
- Embry-Riddle Aeronautical University (1)
- Florida Institute of Technology (1)
- Florida International University (1)
- George Fox University (1)
- Morehead State University (1)
- Keyword
-
- Buildings (17)
- Energy Efficiency (8)
- Simulation (5)
- Energy efficiency (4)
- Biomass gasification (3)
-
- Carbon nanotubes (3)
- Energy savings (3)
- Modelling (3)
- Nanoparticles (3)
- Sustainability (3)
- Sustainable energy (3)
- UAV (3)
- Unmanned aircraft (3)
- Zero Energy Homes (3)
- Alternative Fuels (2)
- BRC (2)
- Biomechanics (2)
- Building codes (2)
- Cartilage (2)
- Clean Cities Coalition (2)
- College seniors; Engineering – Study and teaching; Engineering design – Contests; Science projects; Undergraduate students (2)
- Conical cylinders (2)
- Cooling (2)
- Devices (2)
- Earth climate (2)
- Eddies (2)
- Energy (2)
- Energy performance (2)
- Energy policy (2)
- EnergyGauge (2)
- Publication
-
- Nebraska Tractor Tests (75)
- Mechanical Engineering Faculty Publications (21)
- FSEC Energy Research Center® (20)
- Department of Engineering Mechanics: Faculty Publications (12)
- Faculty Publications (11)
-
- Mechanical Engineering (11)
- Mechanical Engineering Faculty Research (10)
- Conference Papers (9)
- Department of Mechanical and Materials Engineering: Faculty Publications (9)
- Mechanical and Aerospace Engineering Faculty Research & Creative Works (9)
- Articles (8)
- Industrial and Manufacturing Engineering (6)
- Department of Engineering Mechanics: Dissertations, Theses, and Student Research (5)
- Mathematics Faculty Publications (5)
- Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research (4)
- Education and Outreach (4)
- Mechanical Engineering Faculty Publications and Presentations (4)
- Mechanical Engineering Faculty Works (4)
- Mechanical and Biomedical Engineering Faculty Publications and Presentations (4)
- Reports and Proposals (4)
- Department of Mechanical and Aerospace Engineering eNewsBrief (3)
- Mechanical and Materials Engineering Faculty Publications and Presentations (3)
- Mechanical and Nuclear Engineering Publications (3)
- Engineering Technology Faculty Publications (2)
- Fred and Harriet Cox Senior Design Competition Projects (2)
- Graduate School of Oceanography Faculty Publications (2)
- Mechanical Engineering Faculty Patents (2)
- Mechanical and Aerospace Engineering Faculty Publications (2)
- Mechanical and Materials Engineering Faculty Publications (2)
- Other Nanotechnology Publications (2)
Articles 31 - 60 of 288
Full-Text Articles in Engineering
Shaped Mems Contact, Ronald A. Coutu Jr., Paul E. Kladitis, Robert L. Crane
Shaped Mems Contact, Ronald A. Coutu Jr., Paul E. Kladitis, Robert L. Crane
AFIT Patents
A MEMS switch fabrication process and apparatus inclusive of a bulbous rounded surface movable contact assembly that is integral with the switch movable element and achieving of long contact wear life with low contact electrical resistance. The disclosed process is compatible with semiconductor integrated circuit fabrication materials and procedures and includes an unusual photoresist reflow step in which the bulbous contact shape is quickly defined in three dimensions from more easily achieved integrated circuit mask and etching-defined precursor shapes. A plurality of differing photoresist materials are used in the process. A large part of the contact and contact spring formation …
Project: F.U.N.B.O.E. (Follow-Up Nucleate Boiling On-Flight Experiment), Getaway Special Team 2009
Project: F.U.N.B.O.E. (Follow-Up Nucleate Boiling On-Flight Experiment), Getaway Special Team 2009
Education and Outreach
No abstract provided.
Clean Cities Annual Operating Plan 2009: Florida Space Coast Clean Cities Coalition, Florida Solar Energy Center, William Young
Clean Cities Annual Operating Plan 2009: Florida Space Coast Clean Cities Coalition, Florida Solar Energy Center, William Young
FSEC Energy Research Center®
In March, 1997, the Florida Solar Energy Center (FSEC) joined the U.S. Department of Energy (DOE) Clean Cities program to form the Florida Space Coast Clean Cities Coalition in East Central Florida. Space Coast Coalition now consists of 10 counties, as the State is divided into eight Clean Cities regions. Florida Solar Energy Center is located in Cocoa in the approximate center of the coalition area. On October 1, 1999, the expanded Florida Space Coast Clean Cities Coalition was designated and authorized as the 75th Clean Cities Coalition. The Florida Space Coast Clean Cities Coalition is a 501-3c non-profit corporation …
A Nonlinear Constituent Based Viscoelastic Model For Articular Cartilage And Analysis Of Tissue Remodeling Due To Altered Glycosaminoglycan-Collagen Interactions, Gregory C. Thomas, Anna Asanbaeva, Pasquale Vena, Robert L. Sah, Stephen M. Klisch
A Nonlinear Constituent Based Viscoelastic Model For Articular Cartilage And Analysis Of Tissue Remodeling Due To Altered Glycosaminoglycan-Collagen Interactions, Gregory C. Thomas, Anna Asanbaeva, Pasquale Vena, Robert L. Sah, Stephen M. Klisch
Mechanical Engineering
A constituent based nonlinear viscoelastic (VE) model was modified from a previous study (Vena, et al., 2006, “A Constituent-Based Model for the Nonlinear Viscoelastic Behavior of Ligaments,” J. Biomech. Eng., 128, pp. 449–457) to incorporate a glycosaminoglycan (GAG)-collagen (COL) stress balance using compressible elastic stress constitutive equations specific to articular cartilage (AC). For uniaxial loading of a mixture of quasilinear VE constituents, time constant and relaxation ratio equations are derived to highlight how a mixture of constituents with distinct quasilinear VE properties is one mechanism that produces a nonlinear VE tissue. Uniaxial tension experiments were performed with newborn bovine AC …
An Error Threshold Criterion For Singular Value Decomposition Modes Extracted From Piv Data, Brenden P. Epps
An Error Threshold Criterion For Singular Value Decomposition Modes Extracted From Piv Data, Brenden P. Epps
Link Foundation Ocean Engineering and Instrumentation Fellowship Reports
Singular value decomposition (SVD) is often used as a tool to analyze particle image velocimetry (PIV) data. However, experimental error tends to corrupt higher SVD modes, in which the root mean square velocity value is smaller than the experimental error. Therefore, we suggest that the threshold criterion, sk [ ffiffiffiffiffiffiffi DT p ; can be used as a rough limit of the validity of SVD modes extracted from experimental data (where sk is the singular value of mode k, D and T are the number of data sites and time steps, respectively, and is the root mean square PIV error). …
Reinforcement-Learning-Based Output-Feedback Control Of Nonstrict Nonlinear Discrete-Time Systems With Application To Engine Emission Control, Peter Shih, Brian C. Kaul, Jagannathan Sarangapani, J. A. Drallmeier
Reinforcement-Learning-Based Output-Feedback Control Of Nonstrict Nonlinear Discrete-Time Systems With Application To Engine Emission Control, Peter Shih, Brian C. Kaul, Jagannathan Sarangapani, J. A. Drallmeier
Electrical and Computer Engineering Faculty Research & Creative Works
A novel reinforcement-learning-based output adaptive neural network (NN) controller, which is also referred to as the adaptive-critic NN controller, is developed to deliver the desired tracking performance for a class of nonlinear discrete-time systems expressed in nonstrict feedback form in the presence of bounded and unknown disturbances. The adaptive-critic NN controller consists of an observer, a critic, and two action NNs. The observer estimates the states and output, and the two action NNs provide virtual and actual control inputs to the nonlinear discrete-time system. The critic approximates a certain strategic utility function, and the action NNs minimize the strategic utility …
October 2009, Tractor Museum
October 2009, Tractor Museum
Lester F. Larsen Tractor Museum: Planning and Development Documents
Agenda, minutes, treasurer report, director report, docent report, associate report, activities report, test lab report
Third Grade Lesson Plan: Where Does Heat Come From?, Getaway Special Team 2009
Third Grade Lesson Plan: Where Does Heat Come From?, Getaway Special Team 2009
Education and Outreach
No abstract provided.
Sixth Grade Lesson Plan: Heat Moves, Getaway Special Team 2009
Sixth Grade Lesson Plan: Heat Moves, Getaway Special Team 2009
Education and Outreach
No abstract provided.
Fifth Grade Lesson Plan: Solid, Liquid, And Gas, Getaway Special Team 2009
Fifth Grade Lesson Plan: Solid, Liquid, And Gas, Getaway Special Team 2009
Education and Outreach
No abstract provided.
Technical Research Needs For Sustainable Buildings: Results From A Multidisciplinary Nsf Workshop, Leidy Klotz, Vivien Loftness, Gregor Henze, David J. Sailor, David Riley
Technical Research Needs For Sustainable Buildings: Results From A Multidisciplinary Nsf Workshop, Leidy Klotz, Vivien Loftness, Gregor Henze, David J. Sailor, David Riley
Mechanical and Materials Engineering Faculty Publications and Presentations
This article describes research needs for sustainable buildings as defined in a July 2009 National Science Foundation-sponsored workshop. This workshop brought together building researchers with researchers in the areas of distributed renewable energy and multifunctional materials to engage their expertise and identify overlapping research needs and opportunities. An overview of sustainable building design provided the broad context for discussion. This overview was followed by focused presentations in building control systems, advanced building envelopes, and systems and process integration. In addition, presentations on distributed renewable energy and multi-functional materials supported the participants in outlining and generating research needs that connect the …
Towards Supervised Autonomous Task Completion Using An In Vivo Surgical Robot, Jason J. Dumpert
Towards Supervised Autonomous Task Completion Using An In Vivo Surgical Robot, Jason J. Dumpert
Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research
Laparoscopy is a minimally invasive alternative to traditional abdominal surgery. Unlike traditional surgery, a laparoscopic procedure can be completed using small incisions. The use of these small incision results in reduced pain to the patient, shorter recovery times, and less trauma to skin, muscle and other tissues. However, these benefits to the patient are offset by the increased difficulty to the surgeon performing the procedure. These difficulties include reduced dexterity, reduced perception, and longer procedure times. The use of small in vivo robotic devices in minimally invasive surgery is one possible solution to these problems. The movement of these devices …
Shear Rate Threshold For The Boundary Slip In Dense Polymer Films, Nikolai V. Priezjev
Shear Rate Threshold For The Boundary Slip In Dense Polymer Films, Nikolai V. Priezjev
Mechanical and Materials Engineering Faculty Publications
The shear rate dependence of the slip length in thin polymer films confined between atomically flat surfaces is investigated by molecular dynamics simulations. The polymer melt is described by the bead-spring model of linear flexible chains. We found that at low shear rates the velocity profiles acquire a pronounced curvature near the wall and the absolute value of the negative slip length is approximately equal to thickness of the viscous interfacial layer. At higher shear rates, the velocity profiles become linear and the slip length increases rapidly as a function of shear rate. The gradual transition from no-slip to steady-state …
Cracked Rotor Detection By Recurrence Plots, Grzegorz Litak, Jerzy T. Sawicki, Rafał Kaspereka
Cracked Rotor Detection By Recurrence Plots, Grzegorz Litak, Jerzy T. Sawicki, Rafał Kaspereka
Mechanical Engineering Faculty Publications
Recurrence plots (RPs) analysis has been used to distinguish cracked and healthy rotor responses. It has been shown that the recurrence criteria of the dynamical systems defined by the RPs can indicate the damages of the rotating shaft using relatively short time series.
Phase Change Mechanisms During Femtosecond Laser Pulse Train Ablation Of Nickel Thin Films, Xin Li, Lan Jiang, Hai-Lung Tsai
Phase Change Mechanisms During Femtosecond Laser Pulse Train Ablation Of Nickel Thin Films, Xin Li, Lan Jiang, Hai-Lung Tsai
Mechanical and Aerospace Engineering Faculty Research & Creative Works
The mechanisms of nickel thin films irradiated by femtosecond laser pulse trains are studied by a model using molecular dynamics simulations and two-temperature model. It is found that the pulse train technology can change energy transport and corresponding phase change processes. Compared with single pulse ablation at the same total fluence, the pulse trains lead to (1) lower ablation rate with more and smaller uniform nanoparticles, (2) higher film surface temperatures and longer thermalization time, (3) much lower electron thermal conductivity that can further control heat-affected zone, (4) significantly smaller film compressive stresses and tensile stresses which reduce microcracks, and …
Performance Flight Testing Of Small Electric Powered Unmanned Aerial Vehicles, Jon N. Ostler, W. Jerry Bowman, Deryl O. Snyder, Timothy W. Mclain
Performance Flight Testing Of Small Electric Powered Unmanned Aerial Vehicles, Jon N. Ostler, W. Jerry Bowman, Deryl O. Snyder, Timothy W. Mclain
Faculty Publications
Flight testing methods are developed to find the drag polar for small unmanned aerial vehicles powered by electric motors with fixed-pitch propellers. Wind tunnel testing was used to characterize the propeller-motor efficiency. The drag polar was constructed using data from flight tests. This drag polar was then used to find the following performance parameters: maximum velocity, minimum velocity, velocity for maximum range, velocity for maximum endurance, maximum rate of climb, maximum climb angle, minimum turn radius, maximum turn rate, and maximum bank angle. The developed flight testing methods are used to characterize the performance of a small UAV.
An Elaborate Data Set Characterizing The Mechanical Response Of The Foot, Ahmet Erdemir, Pavana A. Sirimamilla, Jason P. Halloran, Antonie J. Van Den Bogert
An Elaborate Data Set Characterizing The Mechanical Response Of The Foot, Ahmet Erdemir, Pavana A. Sirimamilla, Jason P. Halloran, Antonie J. Van Den Bogert
Mechanical Engineering Faculty Publications
Mechanical properties of the foot are responsible for its normal function and play a role in various clinical problems. Specifically, we are interested in quantification of foot mechanical properties to assist the development of computational models for movement analysis and detailed simulations of tissue deformation. Current available data are specific to a foot region and the loading scenarios are limited to a single direction. A data set that incorporates regional response, to quantify individual function of foot components, as well as the overall response, to illustrate their combined operation, does not exist. Furthermore, the combined three-dimensional loading scenarios while measuring …
Steady-Periodic Heating Of A Cylinder, Kevin D. Cole, Paul E. Crittenden
Steady-Periodic Heating Of A Cylinder, Kevin D. Cole, Paul E. Crittenden
Department of Mechanical and Materials Engineering: Faculty Publications
Steady periodic heating is an important experimental technique for measurement of thermal properties. In these methods the thermal properties are deduced from a systematic comparison between the data (such as temperature) and a detailed thermal model. This paper addresses steady-periodic heat transfer on cylindrical geometries with application to thermal-property measurements. The method of Green’s functions is used to provide a comprehensive collection of exact analytical expressions for temperature in cylinders. Five kinds of boundary conditions are treated for one-, two-, and three-dimensional geometries. For some geometries an alternate form of the Green’s function is given, which can be used for …
Me-Em Enewsbrief, September 2009, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University
Me-Em Enewsbrief, September 2009, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University
Department of Mechanical and Aerospace Engineering eNewsBrief
No abstract provided.
On-Line Realtime Water Quality Monitoring And Control For Swimming Pools, Paul Duffy, Gerard Woods, Sean O'Hogain, James Walsh, C. Caplier
On-Line Realtime Water Quality Monitoring And Control For Swimming Pools, Paul Duffy, Gerard Woods, Sean O'Hogain, James Walsh, C. Caplier
Conference Papers
Effective swimming pool water quality monitoring and control systems are important to safeguard public health and for bather comfort. Most Irish swimming pool monitoring systems rely heavily on manual methods for sampling, testing and data recording of important parameters. Microbiological testing is infrequent and results can often take days. The goal of this research is to develop a water quality monitoring and control system with real time data logging, automatic data analysis, remote monitoring and control, microbiological sampling capabilities and online connectivity. National Instruments hardware and its software package LabView form the basis of the monitoring and control system. Several …
Preliminary Modelling Results For An Otto Cycle/Stirling Cycle Hybrid-Engine-Based Power Generation System, Barry Cullen, Jim Mcgovern, Michel Feidt, Stoian Petrescu
Preliminary Modelling Results For An Otto Cycle/Stirling Cycle Hybrid-Engine-Based Power Generation System, Barry Cullen, Jim Mcgovern, Michel Feidt, Stoian Petrescu
Conference Papers
This paper presents preliminary data and results for a system mathematical model for a proposed Otto Cycle / Stirling Cycle hybrid-engine-based power generation system. The system is a combined cycle system with the Stirling cycle machine operating as a bottoming cycle on the Otto cycle exhaust. The application considered is that of a stationary power generation scenario wherein the Stirling cycle engine operates as a waste heat recovery device on the exhaust stream of the Otto cycle engine. This paper is primarily concerned with the development of a model for a suitable Stirling cycle engine capable of running on the …
Strain Energy And Lateral Friction Force Distributions Of Carbon Nanotubes Manipulated Into Shapes By Atomic Force Microscopy, Mark C. Strus, Roya R. Lahiji, Pablo Ares, Vincente Lopez, Arvind Raman, Ron R. Reifenberger
Strain Energy And Lateral Friction Force Distributions Of Carbon Nanotubes Manipulated Into Shapes By Atomic Force Microscopy, Mark C. Strus, Roya R. Lahiji, Pablo Ares, Vincente Lopez, Arvind Raman, Ron R. Reifenberger
Other Nanotechnology Publications
The interplay between local mechanical strain energy and lateral frictional forces determines the shape of carbon nanotubes on substrates. In turn, because of its nanometer-size diameter, the shape of a carbon nanotube strongly influences its local electronic, chemical, and mechanical properties. Few, if any, methods exist for resolving the strain energy and static frictional forces along the length of a deformed nanotube supported on a substrate. We present a method using nonlinear elastic rod theory in which we compute the flexural strain energy and static frictional forces along the length of single walled carbon nanotubes (SWCNTs) manipulated into various shapes …
On Tgo Creep And The Initiation Of A Class Of Fatigue Cracks In Thermal Barrier Coatings, Mercedes T. Hernandez, Anette M. Karlsson, Marion Bartsch
On Tgo Creep And The Initiation Of A Class Of Fatigue Cracks In Thermal Barrier Coatings, Mercedes T. Hernandez, Anette M. Karlsson, Marion Bartsch
Mechanical Engineering Faculty Publications
The initiation of a class of fatigue cracks observed in thermal barrier coatings (TBCs) subjected to thermal gradient mechanical fatigue testing is investigated. The coating system is based on a NiCoCrAlY bond coat and a partially yttria stabilized zirconia top coat. To explain the development of the cracks of interest, the thermo-mechanical response of the bond coat and the thermally grown oxide (TGO) is examined and quantified through finite element analyses. The models include non-linear and time-dependent behavior such as creep, TGO growth stress, and thermo-mechanical cyclic loading. The simulations suggest that stress-redistribution due to creep can lead to tensile …
Doppler Broadening Analysis Of Steel Specimens Using Accelerator Based In Situ Pair Production, V. Makarashvili, Douglas P. Wells, Ajit K. Roy
Doppler Broadening Analysis Of Steel Specimens Using Accelerator Based In Situ Pair Production, V. Makarashvili, Douglas P. Wells, Ajit K. Roy
Mechanical Engineering Faculty Research
Positron Annihilation Spectroscopy (PAS) techniques can be utilized as a sensitive probe of defects in materials. Studying these microscopic defects is very important for a number of industries in order to predict material failure or structural integrity. We have been developing gamma‐induced pair‐production techniques to produce positrons in thick samples ( ∼4–40 g/cm2, or ∼0.5–5 cm in steel). These techniques are called ‘Accelerator‐based Gamma‐induced Positron Annihilation Spectroscopy’ (AG‐PAS). We have begun testing the capabilities of this technique for imaging of defect densities in thick structural materials. As a first step, a linear accelerator (LINAC) was employed to produce photon beams …
Development Of Guidelines For Deformable And Rigid Switch In Ls-Dyna Simulation, Ling Zhu
Development Of Guidelines For Deformable And Rigid Switch In Ls-Dyna Simulation, Ling Zhu
Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research
LS-Dyna simulations have been widely used in research and design to reduce fiscal and time costs. In order to improve the simulation’s efficiency, the components which experience negligible deformations are usually modeled as rigid bodies. However, the use of rigid bodies is always restricted. Though the use of more rigid bodies can save computing resources for a particular simulation, less rigid bodies are preferred for building a model in order to broaden its applications. Meanwhile, if a simulation task has multiple events, the application of rigid bodies in the particular simulation is always minimized so that it can satisfy all …
Development Of A Theoretical Decoupled Stirling Cycle Engine, Barry Cullen, Jim Mcgovern
Development Of A Theoretical Decoupled Stirling Cycle Engine, Barry Cullen, Jim Mcgovern
Conference Papers
The Stirling cycle engine is gaining increasing attention in the current energy market as a clean, quiet and versatile prime mover for use in such situations as solar thermal generation, micro cogeneration and other micro distributed generation situations. A theoretical Stirling cycle engine model is developed. Using a theoretical decoupled engine configuration in which working space swept volume, volume variation, phase angle and dead space ratio are controlled via a black-box electronic controller, a model is developed that is to be used as a tool for analysis of the ideal Stirling cycle engine and the limits on its real world …
Comment On "A Stochastic Biomechanical Model For Risk And Risk Factors Of Non-Contact Anterior Cruciate Ligament Injuries", Antonie J. Van Den Bogert, Scott G. Mclean
Comment On "A Stochastic Biomechanical Model For Risk And Risk Factors Of Non-Contact Anterior Cruciate Ligament Injuries", Antonie J. Van Den Bogert, Scott G. Mclean
Mechanical Engineering Faculty Publications
No abstract provided.
Development Of Extrusion-On-Demand For Ceramic Freeze-Form Extrusion Fabrication, Thomas Oakes, Parimal Kulkarni, Robert G. Landers, Ming-Chuan Leu
Development Of Extrusion-On-Demand For Ceramic Freeze-Form Extrusion Fabrication, Thomas Oakes, Parimal Kulkarni, Robert G. Landers, Ming-Chuan Leu
Mechanical and Aerospace Engineering Faculty Research & Creative Works
In the Freeze-form Extrusion Fabrication (FEF) process, extrusion-on-demand (EOD) refers to the ability to control the start and stop of paste extrusion on demand and is vital to the fabrication of parts with complex geometries. This paper describes the development of EOD for ceramic FEF through modeling and control of extrusion force, selection of appropriate process parameters, and a dwell technique for start and stop of extrusion. A general tracking controller with integral action is used to allow tracking of a variety of reference forces while accounting for the variability in the paste properties. Experiments are conducted to model the …
Fuel Cell Development Using Additive Manufacturing Technologies -- A Review, Nikhil P. Kulkarni, Gargi Tandra, Frank W. Liou, Todd E. Sparks, Jianzhong Ruan
Fuel Cell Development Using Additive Manufacturing Technologies -- A Review, Nikhil P. Kulkarni, Gargi Tandra, Frank W. Liou, Todd E. Sparks, Jianzhong Ruan
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Fuel cells are being perceived as the future clean energy source by many developed countries in the world. The key today for clean power is the reliance of fuel cells not only to power automobiles but also for residential, small commercial, backup power etc. which calls for production on a large scale. Additive manufacturing is perceived as a way to develop cost effective fuel cells. It imparts flexibility to design different kinds of fuel cells along with reduction in material wastage. This paper deals with the review of additive manufacturing processes for research and development of fuel cell components, such …
Increase Of Heat Transfer To Reduce Build Time In Rapid Freeze Prototyping, Ming-Chuan Leu, Sriram Praneeth Isanaka, Von Richards
Increase Of Heat Transfer To Reduce Build Time In Rapid Freeze Prototyping, Ming-Chuan Leu, Sriram Praneeth Isanaka, Von Richards
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Reduction of part build time in the Rapid Freeze Prototyping (RFP) process, which fabricates a 3D ice part layer-by-layer by depositing and freezing water droplets, has been achieved by increase of heat transfer. Three mechanisms have been experimentally investigated: 1) cooling the substrate, 2) use of forced convection, and 3) use of a chilling plate. Cooling the substrate is effective for parts of small heights but becomes ineffective with increase in part height. Forced convection produced desirable reduction in part build time but with the undesirable formation of frost on the built ice part. The use of chilling plate to …