Open Access. Powered by Scholars. Published by Universities.®

Mechanical Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Engineering

Discipline
Institution
Publication Year
Publication
Publication Type

Articles 151 - 180 of 593

Full-Text Articles in Mechanical Engineering

Structural Design Of A New Crash Cushion, Kent Walls, Kevin Schrum Jan 2019

Structural Design Of A New Crash Cushion, Kent Walls, Kevin Schrum

Early Career Technical Journal (ECTJ)

Section 4: Sustainability & Design; pp. 88-95


Flexural Performance Of Microcrystalline Cellulose Based Wood Composite Under Four- Point Bending, Maharshi Dave, Tejas Pandya, Jason Street Jan 2019

Flexural Performance Of Microcrystalline Cellulose Based Wood Composite Under Four- Point Bending, Maharshi Dave, Tejas Pandya, Jason Street

Early Career Technical Journal (ECTJ)

Section 5: Materials; pp. 98-101


Macroscopic Evolution Of Corrosion In An Aluminum Alloy, Tete Tevi, Ramana M. Pidaparti Jan 2019

Macroscopic Evolution Of Corrosion In An Aluminum Alloy, Tete Tevi, Ramana M. Pidaparti

Early Career Technical Journal (ECTJ)

Section 5: Materials; pp. 102-105


Mesoscale Modeling Of Grain Crushup In Eglin Sand Through Discrete Element Fractal Fragmentation, Gerald Pekmezi, David Littlefield Jan 2019

Mesoscale Modeling Of Grain Crushup In Eglin Sand Through Discrete Element Fractal Fragmentation, Gerald Pekmezi, David Littlefield

Early Career Technical Journal (ECTJ)

Section 5: Materials; pp. 106-112


Thermal Management Of Pa-03-10-600 Linear Electromechanical Actuator End Windings Using Straight Circular Heat Pipes And Fins, August Akuoko Kwarteng, Kamal Kaddoura, Jose Corona Jr, Quin H. Leland, Louis Chow, John Kizito Jan 2019

Thermal Management Of Pa-03-10-600 Linear Electromechanical Actuator End Windings Using Straight Circular Heat Pipes And Fins, August Akuoko Kwarteng, Kamal Kaddoura, Jose Corona Jr, Quin H. Leland, Louis Chow, John Kizito

Early Career Technical Journal (ECTJ)

Section 6: Thermal Sciences; pp. 115-122


Shaft Cooling For High Speed Applications, Obed Y W Abotsi, S Esau, R Kabir, J P. Kizito Jan 2019

Shaft Cooling For High Speed Applications, Obed Y W Abotsi, S Esau, R Kabir, J P. Kizito

Early Career Technical Journal (ECTJ)

Section 6: Thermal Sciences; pp. 123-130


A Parametric Study On The Performance Of Heat Sinks, Britney Sumayah, Kendrick Aung Jan 2019

A Parametric Study On The Performance Of Heat Sinks, Britney Sumayah, Kendrick Aung

Early Career Technical Journal (ECTJ)

Section 6: Thermal Sciences; pp. 131-136


Suitability, Sizing, And Configuration Of A Solar Powered Vapor Absorption Cooling System, Harold A. Walters, Tejas S. Pandya Jan 2019

Suitability, Sizing, And Configuration Of A Solar Powered Vapor Absorption Cooling System, Harold A. Walters, Tejas S. Pandya

Early Career Technical Journal (ECTJ)

Section 6: Thermal Sciences; pp. 137-145


Control Of Flow Separation On A Hump Model Using A Dielectric Barrier Discharge Plasma Actuator, Mahdi Hasan, Michael Atkinson Jan 2019

Control Of Flow Separation On A Hump Model Using A Dielectric Barrier Discharge Plasma Actuator, Mahdi Hasan, Michael Atkinson

Early Career Technical Journal (ECTJ)

Section 7: Numerical Methods; pp. 148-154


Solving Knights Covering Problem: Backtracking, Permutation, Bipartite Graph, And Independent Set, Serkan Guldal, Michael Lipscomb, Murat M. Tanik Jan 2019

Solving Knights Covering Problem: Backtracking, Permutation, Bipartite Graph, And Independent Set, Serkan Guldal, Michael Lipscomb, Murat M. Tanik

Early Career Technical Journal (ECTJ)

Section 7: Numerical Methods; pp. 155-160


Effect Of Thermal Conduction On Turbulent Heat Transfer For Attached And Separated Flows, M Elmellouki, S Bhushan Jan 2019

Effect Of Thermal Conduction On Turbulent Heat Transfer For Attached And Separated Flows, M Elmellouki, S Bhushan

Early Career Technical Journal (ECTJ)

Section 7: Numerical Methods; pp. 161-169


An Implementation Of The Automotive External Airbag To Examine Impact Mitigation, Dhruvesh Modi, Lee Moradi Jan 2019

An Implementation Of The Automotive External Airbag To Examine Impact Mitigation, Dhruvesh Modi, Lee Moradi

Early Career Technical Journal (ECTJ)

Section 7: Numerical Methods; pp. 170-178


Recumbent Bicycle Balancing Aid, James Hager Jan 2019

Recumbent Bicycle Balancing Aid, James Hager

Williams Honors College, Honors Research Projects

For our senior design project, our team will be consulting to create a balancing aid system intended for the recumbent bicycle shown below in Figure 1. The owner of the bicycle is Robert Henderson, a former United States Navy sailor from Northeast Ohio who picked up biking and skiing while he was stationed in Maine in the late 80’s. While there, he took to the mountains on the rugged terrain and brought this passion of biking back home to share with his wife, Johanna once he completed his service to his country. Biking became an integral part of the …


The Characterization And Fatigue Life Impact From Surface Roughness On Structurally Relevant Features Produced Using Additive Manufacturing, Eric-Paul Daniel Tatman Jan 2019

The Characterization And Fatigue Life Impact From Surface Roughness On Structurally Relevant Features Produced Using Additive Manufacturing, Eric-Paul Daniel Tatman

Browse all Theses and Dissertations

Additive manufacturing (AM) produces rough surfaces that are detrimental to the mechanical performance of the part. In this work, downward-facing surfaces were fabricated in alloy 718 using laser powder bed fusion and investigated with surface characterization and axial fatigue testing. Coupons with downward-facing surfaces at 45°, 60°, and 75° and flat axial fatigue bars with as-built and machined holes were built. Both specimens were fabricated with three levels of downskin laser power and the coupons with three levels of downskin laser speed. Surface characterization showed roughness increased as the downward-facing angle decreased. Fatigue testing with digital image correlation showed localized …


Engineering Success On The Field: A Reflection On The Epics Ironman Pediatric Prosthetic Project, Glynn Gallaway Nov 2018

Engineering Success On The Field: A Reflection On The Epics Ironman Pediatric Prosthetic Project, Glynn Gallaway

Purdue Journal of Service-Learning and International Engagement

Glynn Gallaway is a student in the Purdue Mechanical Engineering Class of 2020 with interests in the health care, assistive technology, and medical device industries. Glynn is from Dallas, Texas, and was inspired to pursue this career path through her interactions with youth with special needs. She joined the EPICS Ironman team in the fall of 2016 during her first year at Purdue as a part of the learning community. In this article, she discusses her experiences on the Ironman team creating a pediatric prosthetic for a young local athlete. The goal of the Ironman team is to create a …


A Perceptual Comparison Of “Black Box” Modeling Algorithms For Nonlinear Audio Systems, Paul G. Mayo Aug 2018

A Perceptual Comparison Of “Black Box” Modeling Algorithms For Nonlinear Audio Systems, Paul G. Mayo

Student Theses

Nonlinear systems identification is a widespread topic of interest, particularly within the audio industry, as these techniques are employed to synthesize black box models of nonlinear audio effects. Given the myriad approaches to black box modeling, questions arise as to whether an “optimal” approach exists, or one that achieves valid subjective results as a model with minimal computational expense. This thesis uses ABX listening tests to compare black box models of three hardware audio effects using two popular nonlinear implementations, along with two proposed modified implementations. Models were constructed in the Hammerstein form using sine sweeps and a novel measurement …


A Swing Generator Using Water Power Produced By The Wind, Ruka Ozaki Jun 2018

A Swing Generator Using Water Power Produced By The Wind, Ruka Ozaki

The International Student Science Fair 2018

I focus on various kinds of natural energy sources, especially wind. Wind power generation is the most-used method of electricity generation using wind power. Wind power generation has many merits; it achieves high efficiency of electric power generation, it can generate electricity even during the night, it doesn’t make any hazardous materials. However, there are not only merits but also demerits. It can cause bird strike, environment disruption from noise and low-frequency wave. And besides, we must comply building laws when we build wind power generators. Thus I built ‘a swing generator using water power produced by the wind power’, …


Rc Baja Car Suspension, Tyler Martin Jan 2018

Rc Baja Car Suspension, Tyler Martin

All Undergraduate Projects

This year the Mechanical Engineering Technology Department at CWU is holding an R/C Baja car competition using the same rules as the ASME competition. The designed car must compete in three separate events: the slalom course, drag race, and obstacle course. By not only completing, but also being competitive in each of the events, the car will be deemed a success. Suspension and steering are two essential components of any R/C car, and was the main focus for this report. The suspension must be able to support the car in the event of impacts. In addition, the steering must be …


Senior Project Hauff Tree Pruner, Brian Woolery Jan 2018

Senior Project Hauff Tree Pruner, Brian Woolery

All Undergraduate Projects

Neil Hauff, a business owner and entrepreneur from the Yakima valley challenged a team of engineering students from Central Washington University to design a motorized apple tree pruner. This report will discuss the engineering and construction that went into creating the housing of the tree pruner. The housing component needed to be able to protect the moving parts of the pruner, while withstanding the rotational torque produced by the Makita power drill used to drive the pruner. The biggest constraint in designing the housing was to keep the weight of the housing component under 1.5 lbs, while still keeping the …


Non-Intrusive Optical Measurement Of Electron Temperature In Near Field Plume Of Hall Thruster, Peter J. Urban Jan 2018

Non-Intrusive Optical Measurement Of Electron Temperature In Near Field Plume Of Hall Thruster, Peter J. Urban

ETD Archive

Currently there is a large interest in the use of more efficient means of propulsion in long term missions due to the costs and difficulties associated with placing and maintaining the needed fuel for conventional chemical systems in orbit. Mass reduction of upper stages will return large returns due to the great reduction in required lower stage fuel. Due to these factors, alternatives are undergoing active research, though this paper is concerned with the area of electrical propulsion. Electric propulsion is broadly defined as propulsion where the energization of the exhaust occurs via application of electromagnetic fields as opposed to …


Neuromuscular Reflex Control For Prostheses And Exoskeletons, Sandra K. Hnat Jan 2018

Neuromuscular Reflex Control For Prostheses And Exoskeletons, Sandra K. Hnat

ETD Archive

Recent powered lower-limb prosthetic and orthotic (P/O) devices aim to restore legged mobility for persons with an amputation or spinal cord injury. Though various control strategies have been proposed for these devices, specifically finite-state impedance controllers, natural gait mechanics are not usually achieved. The goal of this project was to invent a biologically-inspired controller for powered P/O devices. We hypothesize that a more muscle-like actuation system, including spinal reflexes and vestibular feedback, can achieve able-bodied walking and also respond to outside perturbations. The outputs of the Virtual Muscle Reflex (VMR) controller are joint torque commands, sent to the electric motors …


H.F. Hauff Pruner Cutting Blades, Wyley Stewart Jan 2018

H.F. Hauff Pruner Cutting Blades, Wyley Stewart

All Undergraduate Projects

Apple orchards are a critical component of agriculture in the United States, and keeping the apple trees in the best shape for optimum growth and production is hard work. Neil Hauff, an agriculture industry expert, challenged students at CWU to engineer a power assisted tree pruner. Across the country, apple orchards need pruned every season. The pruning of the trees is strenuous manual labor that requires many man hours. The proposed solution is to create a power assisted tree pruner that would minimize the amount of work needed to trim each tree branch. This project has been separated into three …


Deformation And Stress Averaging For Statistical Ensembles Of Particle Aggregate Mesoscale Models, Gerald Pekmezi, David Littlefield Jan 2018

Deformation And Stress Averaging For Statistical Ensembles Of Particle Aggregate Mesoscale Models, Gerald Pekmezi, David Littlefield

Early Career Technical Journal (ECTJ)

Section 4: Materials; pp. 104-111


Optimization Of Heat Sinks In A Range Of Configurations., Archibald Allswell Amoako Jan 2018

Optimization Of Heat Sinks In A Range Of Configurations., Archibald Allswell Amoako

Electronic Theses and Dissertations

In this study, different heatsink geometries used for electronic cooling are studied and compared to each other to determine the most efficient. The goal is to optimize heat transfer of the heat sinks studied in a range of configuration based on fin geometry. Heat sinks are thermal conductive material devices designed to absorb and disperse heat from high-temperature objects (e.g. Computer CPU). Common materials used in the manufacturing of heat sinks are aluminum and copper due to their relatively high thermal conductivity and lightweight [1]. Aluminum is used as the material for the heatsinks studied in this research project. To …


The Barrier-To-Entry Of Robotics Development Through The Use Of Robot Operating System, Matham Latif Al-Saaty, Kevin Mcfall Jan 2018

The Barrier-To-Entry Of Robotics Development Through The Use Of Robot Operating System, Matham Latif Al-Saaty, Kevin Mcfall

Early Career Technical Journal (ECTJ)

Section 3: Miscellaneous; pp. 86-90


Proceedings Of The 18th Annual Early Career Technical Conference (Front Matter), Ectc Coordinating Committee Jan 2018

Proceedings Of The 18th Annual Early Career Technical Conference (Front Matter), Ectc Coordinating Committee

Early Career Technical Journal (ECTJ)

Proceedings of the 18th Annual Early Career Technical Conference, November 3, 2018. School of Engineering, University of Alabama at Birmingham, Birmingham, Alabama; pp. i-xii


Section 3: Miscellaneous, Ectc Coordinating Committee Jan 2018

Section 3: Miscellaneous, Ectc Coordinating Committee

Early Career Technical Journal (ECTJ)

Proceedings of the 18th Annual Early Career Technical Conference, November 3, 2018. School of Engineering, University of Alabama at Birmingham, Birmingham, Alabama; pp. 71-90


Effect Of Screen Layers And Orientations On Mesh Wicked Heat Pipes, K Kaddoura, O Y W Abotsi, John Kizito Jan 2018

Effect Of Screen Layers And Orientations On Mesh Wicked Heat Pipes, K Kaddoura, O Y W Abotsi, John Kizito

Early Career Technical Journal (ECTJ)

Section 1: Thermal Sciences; pp. 27-32


Numerical Predictions Of Hydrokinetic Turbine Wake And Freesurface Signatures, Oumina El Fajri, Simon Bushan, D Thompson Jan 2018

Numerical Predictions Of Hydrokinetic Turbine Wake And Freesurface Signatures, Oumina El Fajri, Simon Bushan, D Thompson

Early Career Technical Journal (ECTJ)

Section 2: Numerical Methods; pp. 43-51


Section 1: Thermal Sciences, Ectc Coordinating Committee Jan 2018

Section 1: Thermal Sciences, Ectc Coordinating Committee

Early Career Technical Journal (ECTJ)

Proceedings of the 18th Annual Early Career Technical Conference, November 3, 2018. School of Engineering, University of Alabama at Birmingham, Birmingham, Alabama; pp. 1-32