Engineering Commons^™

Design A Continuously Tunable Microwave Filter With A Generalized Constant And Frequency Mapping Technique, Josh Shao, Runqi Zhang, Dimitrios Peroulis

The Summer Undergraduate Research Fellowship (SURF) Symposium

As the demand for agile and accurate communication increases, the fundamental of communication must be improved to support the needs. Current communication operates on an agreement, that each network company pays government to get licensed a range of frequency on the spectrum, and no others are legally allowed to use. This allows a limited number of users to operates at the same time. As the number of users increase, the spectrum become congested and user experience problem like dropping call. This problem can be solved, if users can be shifted between different licensed frequencies, depending on the capacity of the …

Dynamic Characterization Of Periodic Lattice Of Elastically-Connected Bi-Stable Elements Under Seismic Excitation, Lingwei Meng, Myungwon Hwang, Andres F. Arrieta Ph.D.

The Summer Undergraduate Research Fellowship (SURF) Symposium

Metamaterials are engineered materials, typically in periodic arrangements, which exhibit unconventional or extreme properties not found in nature. Understanding the dynamics of metamaterials enables the design of structures with specific functionalities. The dynamics of metamaterials in linear regime has been relatively well studied in recent years, however the unique phenomena arising from nonlinearities in metamaterials are yet to be explored. In this paper, we focus on an array of bi-stable elements connected by elastic springs under various forms of external excitations acting on the entire system. The general equations of motion are derived to handle any degree-of-freedom (DoF) systems of …

The Response Of Schwann Cells To Weak Dc Electric Fields, Alexander T. Lai, Jianming Li

The Summer Undergraduate Research Fellowship (SURF) Symposium

Schwann cells are glial cells that serve the vital role of supporting neurons in the peripheral nervous system. While their primary function is to provide insulation (myelin) for axons, they also help regenerate injured axons by digesting severed axons and providing scaffolding to guide the regeneration process. This specific role of Schwann cells makes them highly important cellular targets following nerve injury. Although some efforts have been made to encourage Schwann cell migration after nerve damage, the use of electric fields to control cell responses remain unexplored; therefore, this experiment serves to characterize the behavior of Schwann cells to weak …

Pilot Performance With Advance Sensor Technlogies Considerations, Erin R. Groll, Nsikak Udo-Imeh, Steven Landry Dr.

The Summer Undergraduate Research Fellowship (SURF) Symposium

Research on human performance indicates people may discretely shift modes as the difficulty in tasks changes. These modes are referred to as “cognitive control modes.” Cognitive control modes are ways people operate and handle their process of thinking during a series of tasks. However, past work has been confined to subjective reports of these mode changes - objective markers in data of cognitive control modes, which should appear if these mode changes are truly discrete, have not be identified. This work will attempt to identify markers of cognitive control modes in data collected on pilots flying instrument approaches. Specifically, a …

Stability Analysis Of A Flexible Vehicle Model Controlled By Human Pilot Models, Abhishek Ajmani, Anil Bajaj

The Summer Undergraduate Research Fellowship (SURF) Symposium

There is a constant race among automobile manufactures to design safer vehicles while minimizing weight to reduce power consumption. Additionally, organizations like NASA and SpaceX are persistently working toward creating reliable, lightweight rovers to be used on the surface of Mars. However, the lightweight requirement often increases vehicle flexibility, which further develops a tendency toward instability in the lateral (sideways) direction. This investigation develops a mathematical model that represents the dynamics of a flexible vehicle in forward motion, and a heuristic human pilot model is proposed which controls the vehicle. Following such formulation, the combined vehicle and pilot model is …

Secondary Atomization: Drop Breakup In A Continuous Air Jet, Grant S. Sondgeroth, Longchao Yao, Catriona M.L. White, Daniel R. Guildenbecher, Jun Chen, Paul E. Sojka

The Summer Undergraduate Research Fellowship (SURF) Symposium

Understanding drop breakup will optimize aircraft engine performance, reduce agro-chemical overspray, and improve pharmaceutical tablet efficacy. Large fuel fragments in engines lead to lowered fuel economy and higher pollutant emissions, while small drops yield more agro-spray drift into surrounding residential and environmental zones. Better pharmaceutical tablets will improve drug uptake and patient comfort.

Engineers and scientists are currently unable to predict the number, size, and velocity of fragments formed during important drop breakup processes. Therefore, we are required to measure these quantities. We use digital inline holography (DIH) to record three-dimensional diameter and position data for fragments formed during multi-mode …

Characterization Of Novel Photoresists For Sted-Enhanced Nanolithography, Brandon R. Franz, Paul Somers, Xianfan Xu

The Summer Undergraduate Research Fellowship (SURF) Symposium

Stimulated emission depletion (STED) applied to nanolithography has greatly improved achievable resolutions and quality of nanoscale structures. The special resin used, called a photoresist, is currently the major limiting factor in further improvement in resolution and structure quality. Characterizing new formulations of photoresists and comparing their performance in STED-enhanced nanolithography to the performance of current formulations will allow for greater resolution and structure quality. With each photoresist, line structures are produced with a two-laser system including a writing, or excitation, laser and a depletion, or STED, laser. The line structures are exposed to the STED laser for a short duration …

Comparison Of Pm-Hip To Cast Alloy 625 For Nuclear Applications, Alexander L. Bullens, Keyou Mao, Janelle P. Wharry, Esteban Bautista

The Summer Undergraduate Research Fellowship (SURF) Symposium

PM-HIP, or Powder Metallurgy and Hot Isostatic Pressing, metals have been a low cost alternative to forged and cast structural metals within various industries. The nuclear industry has recently developed interest in PM-HIP alloys, but further research needs to be done to quantify their mechanical properties and characterize the microstructure. Specifically, we must understand the mechanical and microstructural evolution of PM-HIP materials after long-term operation at the elevated temperatures that PM-HIP components will experience in service. We focus on Ni-base alloy Inconel 625, and compare the PM-HIP version to the cast version. Our methodology consists of annealing samples to various …

Comparative Analysis Of Nanoscale Ultrasound Contrast Agents, Elly Y. Lambert, Luis Solorio

The Summer Undergraduate Research Fellowship (SURF) Symposium

Current ultrasound contrast agents utilize microbubbles as a blood pooling agent, but the size inhibits access to small capillaries. The development of nanoscale ultrasound contrast agents can enter small capillaries of tissues and aid in the detection of diseased states. However, current nano-formulations are flushed from the body over a short period of time. We developed a nanoscale ultrasound contrast agent with increased circulation time to allow for better detection of diseased states in the microvasculature of the body. Characterization (zeta potential, size, echogenicity and stability) and pharmacokinetic analysis were conducted on three nanoscale formulations: 1) Liquid based Bovine Serum …

Comparative Analysis Of Impact Attenuation Properties From Soccer Headgear, Kevin G. Mciver, Goutham N. Sankaran, Justin J. Markel, Tom M. Talavage, Larry J. Leverenz, Eric A. Nauman

The Summer Undergraduate Research Fellowship (SURF) Symposium

Athletes suffering from long-term neurocognitive deficiency due to subconcussive impacts is a major concern for football and soccer players today. Football players wear helmets that can help reduce injury risks like skull fractures, and these helmets must meet standard criteria that determinines how well a functional helmet should reduce accelerations of the player’s head. Currently no standard exists for testing soccer headgear despite studies demonstrating soccer players experience similar magnitudes of impacts. In this study, a modal impact hammer was used in conjunction with a Hybrid III 50th percentile test dummy head to simulate impacts experienced by soccer players to …

Burning Surface Temperature Measurements Of Propellants And Explosives Using Phosphor Thermography, Ethan A. Whitaker, Alex D. Casey, Steven F. Son

The Summer Undergraduate Research Fellowship (SURF) Symposium

Temperature measurements of propellants and explosives are necessary to create accurate models which lead to better understanding of energetic characteristics such as burning rate. Previous attempts at measuring surface temperatures of burning propellants and explosives using thermocouples have suffered from large uncertainty. Thermographic phosphor thermography employs ceramic powders called phosphors whose spectroscopic properties can be used to remotely and nearly non-intrusively measure temperature. Improved methods were developed for application of this technique to energetic materials to yield more accurate, two-dimensional temperature measurements. In this study, zinc oxide doped with gallium, a thermographic phosphor, was mixed into HMX and RDX powder, …

Two-Color Polarization Spectroscopy Measurement Of Nitric Oxide, Ziqiao Chang, Aman Satija, Robert P. Lucht

The Summer Undergraduate Research Fellowship (SURF) Symposium

Nitric Oxide (NO) is a greenhouse gas that contributes to smog and acid rain. Commercial combustion engines and turbines are significant sources of NO emission. Two-color Polarization Spectroscopy (PS) will be used to measure the collision-induced resonances of NO in gas mixtures. The effect of collision partners, such as He and Ar, on the line-shape of NO molecule will be studied. This experiment requires the use of two dye laser systems to generate 226nm beam from frequency mixing of 355nm and 622nm. This enhanced the scan range and improved the ease of operation. One dye laser will be used to …

Improving Methods Of Doping On Black Phosphorus, Yuqin Duan, Adam Charnas, Jingkai Qin, Peide Ye

The Summer Undergraduate Research Fellowship (SURF) Symposium

Black phosphorus (BP) is a 2D semiconducting material with high carrier mobility. It is usually p-type due to oxidation states near its valence band. Although achieved through other growth methods, n-type doping has not yet been accomplished through the modern chemical vapor transport (CVT) growth method. To address this issue, small amounts of tellurium were added to Red Phosphorus to act as a dopant during the CVT growth process in addition to tin(Sn) and tin(IV) iodide, which facilitate growth. The chemicals are heated up to 600°C and precisely cooled in a 21-hour process, during which BP crystals should form. After …

Opportunities And Benefits Of Commercial Truck Platooning, Greg Shaver, Katie England

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Capacity And Safety Opportunities And Challenges In The Transition Period, Andrew Tarko, Brad L. Steckler

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Materials And Maintenance Considerations For Infrastructure Critical To Connected And Autonomous Vehicles, Timothy Wells, Tony Mcclellan

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Indot 2017 Connected Vehicle Deployments On Us 30 And Us 31, John Mcgregor, Howell Li

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Geomatics Engineering And Autonomous Vehicles, Ayman Habib, Jim Sturdevant

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Field Testing In Peer States And Emerging Partnership Opportunities, Srinivas Peeta

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Connected And Autonomous Vehicle Summit, Jim Poturalski

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Purdue Connected Autonomous Transportation Initiative, Tomas Diaz De La Rubia

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Identification Of Roadway Assets By Integration Of Lidar And Camera Images, Michelle Mekker, Yun-Jou Lin, Magdy I. Elahnasawy, Tamer S.A. Shamseldin, Ayman Habib, Darcy M. Bullock

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Connected Vehicle Data For Work Zone Performance Measures, Michelle Mekker, Howell Li, Yun-Jou Lin, Magdy I. Elahnasawy, Tamer S.A. Shamseldin, Ayman Habib, Darcy M. Bullock

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Connected Vehicle Data For Traffic Signal Performance Measures, Jijo K. Mathew

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Connected Vehicle Data For Interstate Performance Measures, Rahul Sakhare, Howell Li

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Connected Vehicle (Cv) Technology Overview, Howell Li, W Benjamin Smith

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Lean Innovation - Funding Stem Education, Samarth Gupta, Chad Laux Phd

International Conference on Lean Six Sigma

No abstract provided.

An Institutional Approach To Lean Six Sigma In Higher Education, Timothy Winders, Chad Laux Phd

International Conference on Lean Six Sigma

No abstract provided.

Evaluation Of Point Of Distribution Exercise, Kristen Dietz, Andrew Barett, Chad Laux Phd, Ryan Tennessen, Randy Black Phd, Pamela Aaltonen Phd, James E. Dietz Phd

International Conference on Lean Six Sigma

No abstract provided.

Improving Security Efficacy And Patron Wait Times In Bankers Life Fieldhouse At Indiana Pacers Games, Christien Alexander, Shaince Matthews, Ryan Mccavit, Roneisha Watkins, James E. Dietz Phd, Chad Laux Phd

International Conference on Lean Six Sigma

No abstract provided.