Mechanical Engineering Commons^™

Dynamic Compressive Behavior And Energy Absorption Of Ethylene Polyurethane Diene Monomer Foam Using Split Hopkinson Pressure Bar Technique, Rowan E. Baird, Mason Tudor, Damian Stoddard

Early Career Technical Journal (ECTJ)

Section 2: Materials & Testing; pp. 27-32

Comparative Analysis And Dynamic Response Of Garolites Under Temperature Spectrum Using Low Velocity Impact Test, Birendra Chaudhary, Suman Babu Ukyam, Damian Stoddard

Early Career Technical Journal (ECTJ)

Section 2: Materials & Testing; pp. 34-41

Autonomous Vehicle Simulation Using Open Source Software Carla, Emily Barbour, Kevin Mcfall

Early Career Technical Journal (ECTJ)

Section 3: Robotics & Computing; pp. 50-57

Comparison Of Dense Descriptors For Image Enhancement, Mohsime Taarji, Arie Nakhmani

Early Career Technical Journal (ECTJ)

Section 3: Robotics & Computing; pp. 44-49

Development Of A Pre-Processing Tool For The 3d Eulerian Code Aleas, Yasir A. Alfawzan, Kenneth Walls

Early Career Technical Journal (ECTJ)

Section 3: Robotics & Computing; pp. 62-67

Real-Time Virtual Remotely Operated Vehicle, Tyler Gragg, Kevin Mcfall

Early Career Technical Journal (ECTJ)

Section 3: Robotics & Computing; pp. 58-61

Developing Semi-Autonomous Flight Control Software For A Meta Aircraft Of Two Fixed Wing Aircraft With A Raspberry Pi + Navio2 Flight Controller, Maxwell J. Cobar, Carlos J. Montalvo

Early Career Technical Journal (ECTJ)

Section 3: Robotics & Computing; pp. 68-75

Exploring Methodology For Development Of Sustainable Construction Management Processes In Puerto Rico, Magdelena Krstanoski, Rafael Melendez

Early Career Technical Journal (ECTJ)

Section 4: Sustainability & Design; pp. 78-83

Design Of A Novel Compliant Knee Joint And Swimming Robot: Preliminary Results, Niko Giannakakos, Joshua Hooper, Andy Houghton, Ayo Ajayi, Mason Mccun, Ayse Tekes

Early Career Technical Journal (ECTJ)

Section 4: Sustainability & Design; pp. 84-87

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

Early Career Technical Journal (ECTJ)

Section 5: Materials; pp. 98-101

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

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

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

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

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

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

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

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

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

Early Career Technical Journal (ECTJ)

Section 7: Numerical Methods; pp. 170-178

Wearable Devices For Single Cell Sensing And Transfection, Lingqian Chang, Yu-Chieh Wang, Faheem Ershad, Ruiguo Yang, Cunjiang Yu, Yubo Fan

Department of Mechanical and Materials Engineering: Faculty Publications

Transdermal drug delivery systems have been successful for decades. Now these devices can be further scaled down, and their applications have been extended to wide selections of cargo, ranging from natural molecules (e.g., insulin and glucose) to bioengineered molecules (e.g., nanoparticles and vaccines). Some emerging nanopatches show promise for precise single-cell gene transfection in vivo and have advantages over conventional tools in terms of delivery efficiency, safety, and controllability of delivered dose. In this review, we discuss recent technical advances in wearable micro/nano devices with unique capabilities or potential for single-cell biosensing and transfection in the skin or other organs, …

Segregation Of Mo Atoms Into Stacking Faults In Crfeconimo Alloy, Kaisheng Ming, Xiaofang Bi, Jian Wang

Department of Mechanical and Materials Engineering: Faculty Publications

Solute segregation at dislocations can impede the motion of dislocations, strengthening materials. Here, we study the formation and role of solute segregation at dislocations in CrFeCoNiMo high-entropy alloys (HEAs) by high-angle annular dark-field scanning transmission electron microscopy imaging and mechanical testing both deformed and annealed samples. Mo atoms exhibit pronounced segregation into the planar-extended core of dislocations, i.e. stacking faults, causing the increase in the yield strength while the loss of the ductility. This work suggests that mechanical properties of HEAs can be tailored by alloying additional elements that are in favor of segregation into dislocations.

Optimization Of Protein-Protein Interaction Measurements For Drug Discovery Using Afm Force Spectroscopy, Yongliang Yang, Bixi Zeng, Zhiyong Sun, Amir Monemianesfahani, Jing Hou, Nian-Dong Jiao, Lianqing Liu, Liangliang Chen, Marc D. Basson, Lixin Dong, Ruiguo Yang, Ning Xi

Department of Mechanical and Materials Engineering: Faculty Publications

Increasingly targeted in drug discovery, protein-protein interactions challenge current high throughput screening technologies in the pharmaceutical industry. Developing an effective and efficient method for screening small molecules or compounds is critical to accelerate the discovery of ligands for enzymes, receptors and other pharmaceutical targets. Here, we report developments of methods to increase the signal-to-noise ratio (SNR) for screening protein-protein interactions using atomic force microscopy (AFM) force spectroscopy. We have demonstrated the effectiveness of these developments on detecting the binding process between focal adhesion kinases (FAK) with protein kinase B (Akt1), which is a target for potential cancer drugs. These developments …

Local Control Robotic Surgical Devices And Related Methods, Eric Markvicka, Tom Frederick, Jack Mondry, Joe Bartels, Shane Michael Farritor

Department of Mechanical and Materials Engineering: Faculty Publications

The various robotic medical devices include robotic devices that are disposed within a body cavity and positioned using a support component disposed through an orifice or opening in the body cavity. Additional embodiments relate to devices having arms coupled to a device body wherein the device has a minimal profile such that the device can be easily inserted through smaller incisions in comparison to other devices without such a small profile. Further embodiments relate to methods of operating the above devices.

Medical Inflation, Attachment And Delivery Devices And Related Methods, Mark Rentschler, Shane Michael Farritor

Department of Mechanical and Materials Engineering: Faculty Publications

The various embodiments disclosed herein relate to procedural space maintenance devices, medical device positioning devices, and devices that provide both procedural space maintenance and device positioning. Further embodiments relate to medical device insertion and/or retraction devices.

Effects Of Geometry And Phase On Material Damage Response Under High-Speed Impact, Rachel Waxman

Theses and Dissertations

Peridynamics, presented by Silling in 2000 [1], is a reformulation of the elastic theory from differential equations to integral equations, which are more equipped to handle discontinuities, such as crack initiation and propagation. Because of this, peridynamics is an effective tool to address many of the problems relevant to the aerospace and defense industries. For example, airborne sand particles and raindrops cause local damage to aircraft in flight. This damage manifests itself as radial and subsurface lateral cracking, as well as increased surface roughness. All of these damage morphologies may result in undesired degradation of mechanical and optical properties.

This …

Optimization And Comparison Of Over-Expanded And Other High Efficiency Four-Stroke Spark-Ignited Boosted Engines, Zhuyong Yang

Dissertations, Master's Theses and Master's Reports

Recent fuel economy and emission regulations are the major concern of the research and development of modern internal combustion engine. Such technologies include variable valve timing (VVT), direct injection (DI), turbocharging, downsizing, and over-expanded cycle are used by many manufacturers to improve engine fuel economy or increase power density.

Current Atkinson cycle technology in the production engine is mainly realized by an advanced valvetrain system to reduce the effective compression ratio while maintaining the same expansion ratio. Another approach to realize over-expanded cycle engine is to utilize a multi-link cranktrain mechanism. Although the Atkinson cycle was originally patented in the …

Test 2209a: New Holland Wormaster 70, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Recovery Of Stem Cell Proliferation By Low Intensity Vibration Under Simulated Microgravity Requires Linc Complex, H. Touchstone, R. Bryd, S. Loisate, M. Thompson, X. Pu, R. Beard, J. T. Oxford, G. Uzer

Mechanical and Biomedical Engineering Faculty Publications and Presentations

Mesenchymal stem cells (MSC) rely on their ability to integrate physical and spatial signals at load bearing sites to replace and renew musculoskeletal tissues. Designed to mimic unloading experienced during spaceflight, preclinical unloading and simulated microgravity models show that alteration of gravitational loading limits proliferative activity of stem cells. Emerging evidence indicates that this loss of proliferation may be linked to loss of cellular cytoskeleton and contractility. Low intensity vibration (LIV) is an exercise mimetic that promotes proliferation and differentiation of MSCs by enhancing cell structure. Here, we asked whether application of LIV could restore the reduced proliferative capacity seen …