Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Aerospace Engineering (169)
- Other Mechanical Engineering (143)
- Energy Systems (117)
- Physical Sciences and Mathematics (111)
- Manufacturing (99)
-
- Materials Science and Engineering (86)
- Education (70)
- Electrical and Computer Engineering (69)
- Arts and Humanities (67)
- Science and Mathematics Education (66)
- History (61)
- History of Science, Technology, and Medicine (61)
- United States History (61)
- Engineering Science and Materials (57)
- Civil and Environmental Engineering (50)
- Operations Research, Systems Engineering and Industrial Engineering (49)
- Computer-Aided Engineering and Design (45)
- Heat Transfer, Combustion (44)
- Nanoscience and Nanotechnology (42)
- Civil Engineering (40)
- Computer Engineering (39)
- Electro-Mechanical Systems (39)
- Ocean Engineering (39)
- Industrial Engineering (38)
- Mechanics of Materials (37)
- Electrical and Electronics (34)
- Chemical Engineering (33)
- Other Engineering Science and Materials (33)
- Institution
-
- University of Nebraska - Lincoln (111)
- California Polytechnic State University, San Luis Obispo (107)
- University of Texas at Arlington (98)
- Purdue University (83)
- Missouri University of Science and Technology (71)
-
- Brigham Young University (53)
- University of Central Florida (48)
- University of Alabama at Birmingham (31)
- Central Washington University (27)
- Washington University in St. Louis (27)
- Louisiana State University (25)
- University of South Florida (25)
- University of Texas Rio Grande Valley (25)
- Utah State University (25)
- Virginia Commonwealth University (25)
- The University of Akron (24)
- University of Kentucky (24)
- Universitas Indonesia (23)
- Michigan Technological University (22)
- Portland State University (21)
- Old Dominion University (19)
- University of Arkansas, Fayetteville (19)
- Clemson University (18)
- University of Texas at El Paso (17)
- Marquette University (15)
- University of South Carolina (14)
- Santa Clara University (12)
- University of Dayton (12)
- Wayne State University (12)
- Embry-Riddle Aeronautical University (11)
- Keyword
-
- Engineering (38)
- ASME (33)
- Conference (31)
- ECTC (31)
- Proceedings (31)
-
- Applied sciences (26)
- Design (19)
- Mechanical Engineering (18)
- Mechanical and nuclear engineering (18)
- CFD (13)
- Optimization (11)
- Simulation (11)
- Mechanical engineering (10)
- Thermal conductivity (10)
- Computational fluid dynamics (9)
- Modeling (8)
- Additive manufacturing (7)
- Combustion (7)
- Heat transfer (7)
- Manufacturing (7)
- Buildings (6)
- Dynamics (6)
- Finite element analysis (6)
- Mechatronics (6)
- Origami (6)
- Radiation (6)
- Robotics (6)
- Solar Decathlon (6)
- 3D Printing (5)
- 3D printing (5)
- Publication
-
- Mechanical and Aerospace Engineering Theses - Archive (80)
- Theses and Dissertations (65)
- Nebraska Tractor Tests (61)
- Mechanical Engineering (50)
- Mechanical and Aerospace Engineering Faculty Research & Creative Works (40)
-
- Electronic Theses and Dissertations (39)
- Department of Mechanical and Materials Engineering: Faculty Publications (36)
- Early Career Technical Journal (ECTJ) (31)
- Industrial and Manufacturing Engineering (28)
- Mechanical Engineering and Technology Senior Projects (27)
- The Summer Undergraduate Research Fellowship (SURF) Symposium (27)
- USF Tampa Graduate Theses and Dissertations (25)
- International Thermal Conductivity Conference (ITCC) and the International Thermal Expansion Symposium (ITES) (24)
- Makara Journal of Technology (23)
- Mechanical Engineering Design Project Class (23)
- Williams Honors College, Honors Research Projects (23)
- Master's Theses (22)
- Masters Theses (22)
- Mechanical and Aerospace Engineering Faculty Publications (19)
- Theses and Dissertations--Mechanical and Aerospace Engineering (19)
- Capstone Design Expo Posters (18)
- Faculty Publications (18)
- Mechanical and Aerospace Engineering Dissertations - Archive (18)
- Open Access Theses (17)
- Open Access Theses & Dissertations (17)
- FSEC Energy Research Center® (15)
- LSU Doctoral Dissertations (15)
- Theses and Dissertations - UTB/UTPA (14)
- Mechanical Engineering Faculty Publications (13)
- Dissertations, Master's Theses and Master's Reports - Open (12)
- Publication Type
- File Type
Articles 1021 - 1050 of 1219
Full-Text Articles in Mechanical Engineering
Simulated Lvad Pump Mimic Device For Analyzing Safety, Risk And Reliability Of Designs, Jacob King, Clint Bergeron, Krishna Chaitanya Manthripragada, Charles Taylor
Simulated Lvad Pump Mimic Device For Analyzing Safety, Risk And Reliability Of Designs, Jacob King, Clint Bergeron, Krishna Chaitanya Manthripragada, Charles Taylor
Early Career Technical Journal (ECTJ)
Section 3: Dynamic Systems & Control; pp. 82-88
A Laser Sensor For Tire Real-Time Parameter Estimation, Mostafa Salama, Marc A. Parker, Vladimir V. Vantsevich
A Laser Sensor For Tire Real-Time Parameter Estimation, Mostafa Salama, Marc A. Parker, Vladimir V. Vantsevich
Early Career Technical Journal (ECTJ)
Section 3: Dynamic Systems & Control; pp. 89-97
Design And Study Of Solar Concentrator With Flat Hexagonal Petals, Ketan Solanki, Mohamed Nizamuddin Shaik, Vijaya Krishna Teja Bangi, Ramesh K. Guduru, Kendrick T. Aung
Design And Study Of Solar Concentrator With Flat Hexagonal Petals, Ketan Solanki, Mohamed Nizamuddin Shaik, Vijaya Krishna Teja Bangi, Ramesh K. Guduru, Kendrick T. Aung
Early Career Technical Journal (ECTJ)
Section 4: Heat Transfer, Energy Generation & Conversion; p. 109-114
Application Of A Sequence Of Design Methodologies To The Problem Of Transporting Warm Particles In Particle Heating Receiver Solar Energy Systems, Kenzo Repole, Sheldon Jeter
Application Of A Sequence Of Design Methodologies To The Problem Of Transporting Warm Particles In Particle Heating Receiver Solar Energy Systems, Kenzo Repole, Sheldon Jeter
Early Career Technical Journal (ECTJ)
Section 4: Heat Transfer, Energy Generation & Conversion; pp. 115-123
Analysis Of An Experimental Building Hvac System To Improve Efficiency, Christopher Fernandez, Sheldon Jeter
Analysis Of An Experimental Building Hvac System To Improve Efficiency, Christopher Fernandez, Sheldon Jeter
Early Career Technical Journal (ECTJ)
Section 4: Heat Transfer, Energy Generation & Conversion; pp. 124-129
Uncertainty Analysis Methodology For Particle Heating Receiver Testing, Clayton Nguyen, Matthew Golob, Sheldon Jeter, Said Abdel-Khalik
Uncertainty Analysis Methodology For Particle Heating Receiver Testing, Clayton Nguyen, Matthew Golob, Sheldon Jeter, Said Abdel-Khalik
Early Career Technical Journal (ECTJ)
Section 4: Heat Transfer, Energy Generation & Conversion; pp. 130-135
A Distribution Level Renewable Integration Optimization Technique With Variable Pricing, Demand Response And Thermal Energy Storage For Residential Applications, Justin M. Hill, Hessam Taherian, Sandeep S. Chahal
A Distribution Level Renewable Integration Optimization Technique With Variable Pricing, Demand Response And Thermal Energy Storage For Residential Applications, Justin M. Hill, Hessam Taherian, Sandeep S. Chahal
Early Career Technical Journal (ECTJ)
Section 4: Heat Transfer, Energy Generation & Conversion; pp. 136-142
Solar Simulator Mixed Temperature Test Of Wire Mesh Particle Heating Receiver To Measure Receiver Efficiency, Matthew Golob, Clayton Nguyen, Sheldon Jeter, Said Abdel-Khalik
Solar Simulator Mixed Temperature Test Of Wire Mesh Particle Heating Receiver To Measure Receiver Efficiency, Matthew Golob, Clayton Nguyen, Sheldon Jeter, Said Abdel-Khalik
Early Career Technical Journal (ECTJ)
Section 4: Heat Transfer, Energy Generation & Conversion; pp. 143-149
Incremental Matrix Inversion Approach For Radial Basis Function Mesh Deformation, Mohamed M. Selim, Ankur Gupta, Roy P. Koomullil
Incremental Matrix Inversion Approach For Radial Basis Function Mesh Deformation, Mohamed M. Selim, Ankur Gupta, Roy P. Koomullil
Early Career Technical Journal (ECTJ)
Section 5: Numerical Methods; pp. 153-159
Finite Element Simulation Of Cylindrical Piezoelectric Energy Harvesters Under Internal Loading, Parya Aghasafari, Israr Bin M Ibrahim, Ramana Pidaparti
Finite Element Simulation Of Cylindrical Piezoelectric Energy Harvesters Under Internal Loading, Parya Aghasafari, Israr Bin M Ibrahim, Ramana Pidaparti
Early Career Technical Journal (ECTJ)
Section 5: Numerical Methods; pp. 160-165
Proceedings Of The 15th Annual Early Career Technical Conference (End Matter), Ectc Coordinating Committee
Proceedings Of The 15th Annual Early Career Technical Conference (End Matter), Ectc Coordinating Committee
Early Career Technical Journal (ECTJ)
Proceedings of the 15th Annual Early Career Technical Conference, November 7, 2015. School of Engineering, University of Alabama at Birmingham, Birmingham, Alabama; p. 166
Parameter Determination And Experimental Validation Of A Wire Feed Additive Manufacturing Model, Kannan Suresh Kumar
Parameter Determination And Experimental Validation Of A Wire Feed Additive Manufacturing Model, Kannan Suresh Kumar
Masters Theses
“Laser metal deposition is an additive manufacturing method with great scope and robustness. The wire fed additive manufacturing method has great opportunities in space applications and other zero gravity manufacturing processes. Process parameters play an important role in controlling the complex phenomenon and obtaining an ideal manufactured part. These parameters can be efficiently determined using simulation tools which are highly essential in visualizing real world experiments, therefore saving time and experimental costs. The objective of this study is to develop a transient 3D model of laser aided wire feed metal deposition which realizes the heat transfer and fluid flow behavior …
Numerical Study Of Upstream And Downstream Regions Of One Dimensional Detonation Wave In A Dusty Gas Medium, Shubhadeep Banik
Numerical Study Of Upstream And Downstream Regions Of One Dimensional Detonation Wave In A Dusty Gas Medium, Shubhadeep Banik
Masters Theses
"In detonative combustion very high temperatures are attained by the burned gases. As a result, a large amount of thermal energy is produced during the combustion process. This heat can affect the state of the unburned fuel through radiation of heat from the burned gases. In this study a one-dimensional model was deemed appropriate to gain insight into the fundamental structure of the detonation wave. In this model, the detonation wave divides the fluid stream into an upstream region, consisting of fuel and oxidant, and a downstream region, consisting of burned gases. A set of computer programs, some developed during …
American Sign Language Alphabet Recognition Using Microsoft Kinect, Cao Dong
American Sign Language Alphabet Recognition Using Microsoft Kinect, Cao Dong
Masters Theses
"American Sign Language (ASL) fingerspelling recognition using marker-less vision sensors is a challenging task due to the complexity of ASL signs, self-occlusion of the hand, and limited resolution of the sensors. This thesis describes a new method for ASL fingerspelling recognition using a low-cost vision camera, which is Microsoft's Kinect. A segmented hand configuration is first obtained by using a depth contrast feature based per-pixel classification algorithm. Then, a hierarchical mode-finding method is developed and implemented to localize hand joint positions under kinematic constraints. Finally, a Random Decision Forest (RDF) classifier is built to recognize ASL signs according to the …
Pipeline Leak Detection, Marcia Golmohamadi
Pipeline Leak Detection, Marcia Golmohamadi
Masters Theses
"In the present research two techniques are applied for leak detection in pipelines. The first method is a hardware-based technique which uses ultrasonic wave's emission for pipeline inspection. Ultrasonic waves are propagated in the pipe walls and reflected signal from leakage will be used for pipe analysis. Several Pipes with various dimensions and characteristics are modeled by finite element method using ANSYS. Second order longitudinal modes of ultrasonic waves are emitted in their walls. For this purpose, excited frequency is calculated such that it excites the second order longitude mode. In order to investigate the behavior of emitted wave in …
Emission And Energy Analysis Of Self-Sufficient Biomass Power Plant To Achieve Near Net Zero Co₂ Emission, Baburaj Kanagarajan
Emission And Energy Analysis Of Self-Sufficient Biomass Power Plant To Achieve Near Net Zero Co₂ Emission, Baburaj Kanagarajan
Masters Theses
"The use of biomass to fuel power plants is considered by many to be a carbon neutral solution to carbon dioxide emissions. One objection to this method of power generation is the gasoline or diesel spent in the transportation and feedstock production, which is a major contributor to carbon emission. In addition, costs associated with the transportation of the biomass fuels are also a major limiting. This work investigates the use of a hybrid farming facility as a means of distributed generation combined. A model that incorporates a small scale biomass power facility located within a farming facility is examined. …
Thermographic Investigation Of Laser Metal Deposition, Sreekar Karnati
Thermographic Investigation Of Laser Metal Deposition, Sreekar Karnati
Masters Theses
"Laser metal deposition as an additive manufacturing technique has been proven to possess the capability for fabricating complex, intricate geometries and excellent material properties through material deposition. Accurate manufacture of such geometric features would require precise control over the material deposition process. The need of the hour are process monitoring and analyses mechanisms that are crucial in ascertaining the occurrence of the intended actions during deposition while also serving as effective learning tools. The current work involved developing and incorporating an Infra-Red (IR) camera as a process monitoring tool for laser metal deposition. Using the IR camera the thermal dynamics …
An Experimental Study Of Fabrication Temperature Effect On Aqueous Extrusion Freeform Fabrication, Jie Li
An Experimental Study Of Fabrication Temperature Effect On Aqueous Extrusion Freeform Fabrication, Jie Li
Masters Theses
"In order to understand the effect of fabrication temperature, a computer controlled 3-D gantry system was used to extrude aqueous alumina paste using Extrusion Freeform Fabrication. The system includes a temperature control subsystem that allows for fabrication of components below the paste's freezing temperature in the range of -10⁰C to -30⁰C and a hot plate with temperature in the range of 20⁰C to 80⁰C inside a room temperature chamber. Comparisons in terms of relative density, mechanical properties, part accuracy and minimum deposition angle were performed by Extrusion Freeform Fabrication at 40⁰C plate temperature inside a room temperature chamber and at …
Laser Surface And Sub-Surface Repair During Metal Additive Manufacturing, Prudvi Teja Ravi
Laser Surface And Sub-Surface Repair During Metal Additive Manufacturing, Prudvi Teja Ravi
Masters Theses
"This study examines the use of laser surface treatment to repair surface and subsurface defects. Numerical analysis was performed on laser surface melting using Gaussian heat distribution equations to analyze the depth of the melt pool created by the phenomena. Concurrently, a process map was developed with a planned set of experiments by varying the ranges of laser power and travel speed to determine the dimensions of the melt pool across the gamut. The data generated from both the process studies and the numerical analysis was then used to determine the ideal operating ranges of the process parameters to repair …
Spatial And Temporal Modulation Of Heat Source Using Light Modulator For Advanced Thermography, Arvindvivek Ravichandran
Spatial And Temporal Modulation Of Heat Source Using Light Modulator For Advanced Thermography, Arvindvivek Ravichandran
Masters Theses
"Thermography is a Non-Destructive Testing (NDT) method that has found increasing use in industry and research. It has the advantages of being non-contact and be able to interrogate a large surface simultaneously. Active thermography using flash lamps as heat source has been demonstrated for identifying blind holes and delamination in composites. Despite these advancements, active thermographic approach fails to defects like cracks. Under uniform illumination heat flow is predominantly 1D and can easily circumvent a narrow feature. This can be overcome by using a focused light/laser source onto the surface to impose a 3D heat flux. The disadvantage is that …
Experimental And Computational Evaluation Of Water Management And Performance Of A Bio-Inspired Pem Fuel Cell In Comparison To A Conventional Flow Field, Venkatanaga Bhaskar Prakash Saripella
Experimental And Computational Evaluation Of Water Management And Performance Of A Bio-Inspired Pem Fuel Cell In Comparison To A Conventional Flow Field, Venkatanaga Bhaskar Prakash Saripella
Masters Theses
"Fuel cells are being increasingly used in various stationary and transportation power applications due to their higher energy efficiency and lower pollution. Flow field design in Proton Exchange Membrane (PEM) fuel cells is a major area of research for performance improvement. Bio-inspired flow field designs have significant potential for increased performance by effective distribution of reactants with better water management capabilities. In this study, a bio-inspired flow field design, formulated using Murray's law and mimicking a typical leaf venation pattern, is experimentally and computationally investigated in comparison to a conventional single serpentine design. Experiments are conducted using a special transparent …
Thermodynamic And Chemical Kinetic Coupled Modeling For The Determination Of Cyclic Combustion Phasing In Hcci Engines, Krishawn Michele Goodwin
Thermodynamic And Chemical Kinetic Coupled Modeling For The Determination Of Cyclic Combustion Phasing In Hcci Engines, Krishawn Michele Goodwin
Masters Theses
"Homogeneous charge compression ignition (HCCI) is a low temperature combustion mode that contains great potential for decreasing emissions while increasing efficiency in internal combustion engines. The limitation is in that it is inherently difficult to control based on the lack of an external combustion trigger. This thesis outlines the potential of using the combustion residual species of carbon monoxide as a method of controlling the location of combustion by using data from a computer model. The model is a nonlinear five-state thermodynamic model that is coupled with a skeletal chemical kinetic model for PRF96. The model computes the amount of …
Freeze-Form Extrusion Fabrication Of Boron Carbide, Aaron Scott Thornton
Freeze-Form Extrusion Fabrication Of Boron Carbide, Aaron Scott Thornton
Masters Theses
"Boron carbide is a safe, alternative to beryllium as a material for aerospace structures since it is also light-weight and exhibits high strength. This paper discusses a study of the Freeze-form Extrusion Fabrication (FEF) process to fabricate parts from boron carbide. Process parameters and hardware were modified to fabricate boron carbide specimens free of printed defects. Four-point bending tests were performed to measure the flexural strength of fabricated specimens. Observations of the presence of voids caused by ice crystals in fabricated parts led to further development and characterization of the boron carbide paste used with the FEF process. Additives were …
Performance Metrics For Powder Feeder Systems In Additive Manufacturing, Venkata Sivaram Bitragunta
Performance Metrics For Powder Feeder Systems In Additive Manufacturing, Venkata Sivaram Bitragunta
Masters Theses
"In blown powder Direct Metal Deposition (DMD) process, parts are built by adding metal powder on the melt pool created by the laser system. At low feed rates powder feeder systems have perturbations. The study focused on relationship between the perturbation frequencies by inherent powder feeder designs and its impact on deposition quality. Performance metric determine the relation between perturbations in the powder flow and quality of the deposit. To determine performance metric, various powder feeder designs were analyzed. Perturbation frequencies were introduced to the disk feeder design. The quality of the deposit was determined by the surface roughness of …
A Force Feedback Haptic Interface For Atomic Force Microscopy, Abdulmohsen Alabdulmuhsin
A Force Feedback Haptic Interface For Atomic Force Microscopy, Abdulmohsen Alabdulmuhsin
Masters Theses
"Integrating a force feedback haptic device with atomic force microscopy (AFM) improves the capability to investigate and manipulate the objects on a micro- and nanoscale surface. The haptic device provides the researcher with a sense of touch and movement by changing the position of the stylus or amount of force on it. The developed system's concept is to provide the user a sense and feel and control of the AFM probe at the nanoscale. By positing the haptic stylus, the user generates reference to commands to the AFM probe. In turn, forces experienced by the probe are communicated to the …
Estimation Of Tip-Sample Force In Tapping Mode Atomic Force Microscopy Using Neural-Network And Repetitive Control Approaches, Alireza Toghraee
Estimation Of Tip-Sample Force In Tapping Mode Atomic Force Microscopy Using Neural-Network And Repetitive Control Approaches, Alireza Toghraee
Masters Theses
"Atomic Force Microscopy is one of the most powerful tools for imaging, measuring and manipulating materials at nanometer scale. Among different modes of AFM, tapping mode, in which the oscillating tip touches the sample periodically, is most common mode. During the tip approach and retract, the tip interacts with sample and experiences different force regimes. This tip-sample interaction force contains information about the sample topology, material properties and tip geometry. However, quantitative measurement of the time-varying tip-sample interaction forcing function is challenging in the tapping mode because of the combined dynamic complexities of the cantilever and nonlinear complexity of the …
Anthropomorphic Robotic Ankle-Foot Prosthesis With Active Dorsiflexion- Plantarflexion And Inversion-Eversion, Evandro Ficanha
Anthropomorphic Robotic Ankle-Foot Prosthesis With Active Dorsiflexion- Plantarflexion And Inversion-Eversion, Evandro Ficanha
Dissertations, Master's Theses and Master's Reports
The main goal of the research presented in this paper is the development of a powered ankle-foot prosthesis with anthropomorphic characteristics to facilitate turning, walking on irregular grounds, and reducing secondary injuries on bellow knee amputees. The research includes the study of the gait in unimpaired human subjects that includes the kinetics and kinematics of the ankle during different types of gait, in different gait speeds at different turning maneuvers. The development of a robotic ankle-foot prosthesis with two active degrees of freedom (DOF) controlled using admittance and impedance controllers is presented. Also, a novel testing apparatus for estimation of …
Transient Thermoelectric Supercooling: Isosceles Current Pulses From A Response Surface Perspective And The Performance Effects Of Pulse Cooling A Heat Generating Mass, Alfred Piggott
Dissertations, Master's Theses and Master's Reports
With increased public interest in protecting the environment, scientists and engineers aim to improve energy conversion efficiency. Thermoelectrics offer many advantages as thermal management technology. When compared to vapor compression refrigeration, above approximately 200 to 600 watts, cost in dollars per watt as well as COP are not advantageous for thermoelectrics. The goal of this work was to determine if optimized pulse supercooling operation could improve cooling capacity or efficiency of a thermoelectric device. The basis of this research is a thermal-electrical analogy based modeling study using SPICE. Two models were developed. The first model, a standalone thermocouple with no …
Elementary Assessments And Simulations Based Proposals For New Heat Transfer Correlations And Flow Regime Maps For Annular/Stratified Regime Of Shear Driven Internal Condensing Flows, Siddharth Ravikumar
Elementary Assessments And Simulations Based Proposals For New Heat Transfer Correlations And Flow Regime Maps For Annular/Stratified Regime Of Shear Driven Internal Condensing Flows, Siddharth Ravikumar
Dissertations, Master's Theses and Master's Reports
Contemporary cooling applications necessitate the use of mm-scale shear driven flow condenser designs which also need to ensure substantial heat transfer rates for a wide range of flow conditions. Some modern shear driven flow condensers must meet the requirements of small size and large heat flux removal capability for variety of flow conditions. For this, effective estimates of heat transfer rate correlations and correlations for estimating the length of the annular regime are essential. Existing heat transfer correlations are built based on semi-empirical approaches which are primarily supported by large data sets, which are often mixed with insufficient explanation and …
A Market-Based Approach To 3d Printing For Economic Development In Ghana, Wade Aitken-Palmer
A Market-Based Approach To 3d Printing For Economic Development In Ghana, Wade Aitken-Palmer
Dissertations, Master's Theses and Master's Reports - Open
The purpose of this report is to create the foundation for further study of a market-based approach to 3D printing as an instrument for economic development in Ghana. The delivery of improved products and services to the most underserved markets is needed to spur economic activity and improve standards of living. The relationship between economic development and the advancement of technology is considered within the context of Ghana. An opportunity for market entry exists within both the bottom of the economic pyramid and the mid-segment market. 3D printing (additive manufacturing) has proven to be a disruptive technology that has demonstrated …