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Additive Manufacturing Of Highly Dense Anisotropic Nd–Fe–B Bonded Magnets, Kinjal Gandha, Ikenna C. Nlebedim, Vlastimil Kunc, Edgar Lara-Curzio, Robert Fredette, M. Parans Paranthaman 2020 Ames Laboratory

Additive Manufacturing Of Highly Dense Anisotropic Nd–Fe–B Bonded Magnets, Kinjal Gandha, Ikenna C. Nlebedim, Vlastimil Kunc, Edgar Lara-Curzio, Robert Fredette, M. Parans Paranthaman

Ames Laboratory Accepted Manuscripts

Extrusion based big area additive manufacturing process is utilized for fabrication of dense anisotropic bonded magnets. High loading fraction (≥70 vol%) of magnequench anisotropic Nd–Fe–B powder in nylon is used for preparing anisotropic bonded magnets. A higher energy product of ~143.2 kJ/m3 is obtained for the post printed magnetic field aligned at 1 Tesla. These findings make an important step towards the fabrication of gap magnets with energy product between ferrite and Nd–Fe–B sintered magnets. Moreover, printed bonded magnets exhibited better thermal stability, mechanical properties and superior magnetic properties compared to commercial injection molded ...


Smartphone-Tape Method For Calculating Body Segment Inertial Parameters For Analysis Of Pitching Arm Kinetics, Jay Sterner 2020 California Polytechnic State University, San Luis Obispo

Smartphone-Tape Method For Calculating Body Segment Inertial Parameters For Analysis Of Pitching Arm Kinetics, Jay Sterner

Master's Theses

The objectives of this study were to (1) develop a non-invasive method (referred to as Smart Photo-Tape) to calculate participant-specific upper arm, forearm, and hand segment inertial properties (SIPs) (e.g. mass, center of mass, and radii of gyration) and (2) use those Smart Photo-Tape properties in inverse dynamics (ID) analyses to calculate injury-related pitching arm kinetics. Five 20- to 23- year-old baseball pitchers were photographed holding a baseball and analyzed using the Smart Photo-Tape method to obtain 3-D inertial properties for their upper arm, forearm, and hand. The upper arm and forearm segments were modelled as stacked elliptic cylinders ...


Design Of Structural Stand For High-Precision Optics Microscopy, Sara T. Novell 2020 California Polytechnic State University, San Luis Obispo

Design Of Structural Stand For High-Precision Optics Microscopy, Sara T. Novell

Master's Theses

Lawrence Livermore National Lab (LLNL) is home to the National Ignition Facility (NIF), the world’s largest and most energetic laser. Each of the 192 beamlines contains dozens of large optics, which require offline damage inspection using large, raster-scanning microscopes. The primary microscope used to measure and characterize the optical damage sites has a precision level of 1 µm. Mounted in a class 100 clean room with a raised tile floor, the microscope is supported by a steel stand that structurally connects the microscope to the concrete ground. Due to ambient vibrations experienced in the system, the microscope is only ...


Safran Seat Attachment System, Craig john Kimball, Tyler Bragg, Lynette Cox 2020 California Polytechnic State University, San Luis Obispo

Safran Seat Attachment System, Craig John Kimball, Tyler Bragg, Lynette Cox

Mechanical Engineering

This final design review (FDR) document outlines the senior design project being carried out by a team of mechanical engineering undergraduate students attending California Polytechnic State University, San Luis Obispo for Safran Seats in Santa Maria, CA. The project originally was to design, build, and test a universal attachment to secure a widebody business class seat to seven aircraft models with different seat track geometry. The goal was to design, document, and create a finished product that fits design, weight, and manufacturing requirements, as well as passes static 9G FWD testing. Structural analysis, manufacturing analysis, FEA, and CAD assemblies will ...


Spring Loaded Camming Device, Jared S. Christner, Kaitlin O. Deherrera, Ryan W. Edwards, John S. Hickey 2020 California Polytechnic State University, San Luis Obispo

Spring Loaded Camming Device, Jared S. Christner, Kaitlin O. Deherrera, Ryan W. Edwards, John S. Hickey

Mechanical Engineering

Spring loaded camming devices or “cams” are used in traditional rock climbing as a means of active fall protection. Climbers place cams in cracks and fissures in the rock wall. The cam’s lobes press against the walls, locking it in place, anchoring the climber in case of a fall. Currently, there is a lack of large cams on the market. Only two small companies produce cams that are usable in cracks 6.5 inches wide and larger, however their designs are either too heavy and/or lack features to be comfortable. We are a group of mechanical engineering students ...


Automated Drone Calibration System, Jackie Kelly Jong-Mee Paik, Zach Nathan Richter, Tyler Wilson Van Den Berg, Ryan Alexander Zhan, Matthew Ward Carlson 2020 California Polytechnic State University, San Luis Obispo

Automated Drone Calibration System, Jackie Kelly Jong-Mee Paik, Zach Nathan Richter, Tyler Wilson Van Den Berg, Ryan Alexander Zhan, Matthew Ward Carlson

Mechanical Engineering

The final design review of the Inspired Flight Calibration Team senior project will detail the process used to complete a verification prototype of a drone calibration device and discuss lessons learned and suggestions for improving this device. Going from brainstorming and conceptual prototyping all the way through verification prototyping and testing, we were able to design a gyroscopic device that met Inspired Flight’s needs for the flight sensor calibration of their drones. The mechanical design involved comprehensive CAD models and hands-on manufacturing. The mechatronics side of the project worked heavily with electrical wiring and writing custom software to communicate ...


Golf Swing Trainer Using Wii Balance Board, Brooks M. Leftwich, Nicholas Hassler, Clark A. Hall, Sam Gates, Thomas B. Vickery, Alec Rinehart, Zakkary B A Compton, Ryan A. Singley 2020 University of Tennessee, Knoxville

Golf Swing Trainer Using Wii Balance Board, Brooks M. Leftwich, Nicholas Hassler, Clark A. Hall, Sam Gates, Thomas B. Vickery, Alec Rinehart, Zakkary B A Compton, Ryan A. Singley

Chancellor’s Honors Program Projects

No abstract provided.


In-Service Performance Evaluation Of Concrete Sloped End Treatments In Iowa, Jessica Lingenfelter 2020 University of Nebraska - Lincoln

In-Service Performance Evaluation Of Concrete Sloped End Treatments In Iowa, Jessica Lingenfelter

Mechanical (and Materials) Engineering -- Dissertations, Theses, and Student Research

Sloped end treatments were historically developed as low-cost, low-maintenance end treatments for rigid features like concrete barriers and bridge rails. Crash testing indicated that sloped end treatments are associated with significant instability for impacting vehicles. However, the in-service performance of these features has not been evaluated. An in-service performance evaluation (ISPE) was performed to evaluate vehicle crashes with sloped end treatments in Iowa between 2008 and 2017. Researchers generated a geographic inventory of sloped end treatment locations, reviewed crash narratives and scene diagrams for crashes near these sloped end treatments, and calculated an estimated crash rate and crash cost for ...


Sae Baja Drivetrain, Troy Von Gillern, Kaitlyn Elmer, Nathan Tabor 2020 Olivet Nazarene University

Sae Baja Drivetrain, Troy Von Gillern, Kaitlyn Elmer, Nathan Tabor

Scholar Week 2016 - present

A project to optimize the drivetrain on the ONU SAE Baja Team vehicle.


Fluid Power Vehicle Challenge, Jacob Torrey, Kayla Londono, Bryson Chan, Aaron Trujillo 2020 California Polytechnic State University, San Luis Obispo

Fluid Power Vehicle Challenge, Jacob Torrey, Kayla Londono, Bryson Chan, Aaron Trujillo

Mechanical Engineering

The FPVC combines mechanical engineering disciplines to design and manufacture a vehicle that utilizes hydraulic power. The FDR covers the final manufacturing process and verification processes developed during the front end of research and analysis built upon the Critical Design Review (CDR) and the PDR (Preliminary Design Review). This report showcases the design decisions and extensive research that supports the continuing efforts by the Team Pump My Ride, to build upon the accomplishments of Cal Poly’s previous team, The Incompressibles. The FDR presents how Team Pump My Ride produced the design changes from the CDR and PDR to achieve ...


Geometric Iteration Of A Knee Prosthetic And Static Stress-Bearing Capacity, Alexander Wheeler 2020 University of Nebraska - Lincoln

Geometric Iteration Of A Knee Prosthetic And Static Stress-Bearing Capacity, Alexander Wheeler

Honors Theses, University of Nebraska-Lincoln

The purpose of this study was to improve a prosthetic knee model in terms of size, weight, and biocompatibility. Several tests were run to determine its effectiveness in supporting static and quasistatic loads. The positions in which these tests were run include static upright standing, static one-knee 90 degree kneeling, static squatting at maximum flexion, and quasistatic midstride. These simulations were conducted to find areas of high stress and strain. These patterns were used to determine the maximum body weight a physical prosthetic could support. The material used to create the prosthetic was changed from AISI 316 stainless steel to ...


Mechanical Properties Of Permanent Foaming Fixatives For Deactivation & Decommissioning Activities, Tristan Maximilian Simoes-Ponce 2020 Florida International University

Mechanical Properties Of Permanent Foaming Fixatives For Deactivation & Decommissioning Activities, Tristan Maximilian Simoes-Ponce

FIU Electronic Theses and Dissertations

The Department of Energy is investigating fixative technologies that encapsulate and/or immobilize residual contamination in voids during deactivation and decommissioning (D&D). These technologies must have adequate mechanical and adhesion properties to withstand seismic activity that may occur. One solution is the implementation of polyurethane foams used as permanent foaming fixatives (PFF), specifically intumescent foams that contain expandable graphite, making them fire resistant when exposed to extreme heat conditions.

Tensile, compression, seismic, and tensile adhesion testing was done on six commercial-off-the-self polyurethane foams to determine if the expandable graphite and other filler intumescent technologies improve its mechanical limits. It ...


A Novel Self-Healing System: Towards A Sustainable Porous Asphalt, Shi Xu, Xueyan Liu, Amir Tabakovic, Erik Schlangen 2020 Delft University of Technology

A Novel Self-Healing System: Towards A Sustainable Porous Asphalt, Shi Xu, Xueyan Liu, Amir Tabakovic, Erik Schlangen

Articles

Self-healing asphalt, aimed to produce a sustainable asphalt pavement using green technology, has been studied in the past two decades. Technologies including encapsulated rejuvenator and induction heating have been proposed, demonstrated in the laboratory, and gradually evaluated in field application. This paper looks into the synergy effect of the above two technologies, where induction heating serves as the asphalt damage repair mechanism, requiring just 2 min heating time and encapsulated rejuvenator will replenish (rejuvenate) aged asphalt binder and reinstate bitumen’s healing ability. Moreover, the increased temperature from induction heating could in turn accelerate the diffusion process of rejuvenator into ...


Supermileage Vehicle Drivetrain Design, Griffin M. Kraemer, Kai Meter, Arya Mahdavian 2020 California Polytechnic State University, San Luis Obispo

Supermileage Vehicle Drivetrain Design, Griffin M. Kraemer, Kai Meter, Arya Mahdavian

Mechanical Engineering

The current Cal Poly Supermileage team has faced issues regarding the efficiency and durability of their SMV vehicle’s drivetrain. After conducting research to solve their current issues, we developed a final drivetrain configuration that will improve the performance and life of the vehicle. This report outlines some of the completed research including: a table of designs used by other teams, a table of patents that can be applied to our design, and a list of technical literature we can use to better our design. It also summarizes our goals and objectives, including a table of the engineering specifications of ...


Asts Frame, Dustin Braun 2020 Central Washington University

Asts Frame, Dustin Braun

All Undergraduate Projects

The automotive industry has been an industry of many breakthroughs in technology and mechanical systems over the course of its history. But in one area, its innovation has slowed. That is in the area of the short throw shifter. All aftermarket short throw shifters are currently one dimensional. No adjustability, no ability to finetune to one’s personal desire. The goal of this project is to create a short throw shifter frame that is easier/faster to install, as well as allow for full adjustability of the shifter from inside the car. This frame design uses mostly 6061-T6 aluminum, along ...


Footsteps Power Generator, Faisal Alonazi, Mohammed Aljohani 2020 Central Washington University

Footsteps Power Generator, Faisal Alonazi, Mohammed Aljohani

All Undergraduate Projects

This project was motivated by the need for a device that would generate electricity from human motion, especially footsteps. Electricity is a very important resource in our daily life. There are numerous sources from which generate electrical energy. The major sources of energy include but are not limited to coal, natural gas, petroleum, and nuclear energy. Most of these sources have adverse effects on the environmental inclusion such as air pollution; for example, from coal energy generation plants which then cumulatively leads to effects such as increase in rates of global warming. This project seeks to establish an environmentally friendly ...


R/C Mini Baja Car: Drive Train And Steering, Carlton R. McDonald 2020 Central Washington University

R/C Mini Baja Car: Drive Train And Steering, Carlton R. Mcdonald

All Undergraduate Projects

The purpose of the Baja R/C Car is to compete in the ASME eFX competition in a series of events to prove the functionality of the vehicle. This series of events includes the Slalom, Drag, and Baja race, The Slalom is a test in the steering capability of the vehicle, the Drag is a test in the acceleration of the vehicle in a straight line, and the Baja puts all factors together in a race to test every component of the vehicle. This project is about building an R/C car that not only functions, but also has maximum ...


Dual-Axis Solar Tracker, Bryan Kennedy 2020 Central Washington University

Dual-Axis Solar Tracker, Bryan Kennedy

All Undergraduate Projects

Renewable energies, and fuels that are not fossil fuel-based, are one of the prolific topics of debate in modern society. With climate change now becoming a primary focus for scientists and innovators of today, one of the areas for the largest amount of potential and growth is that of the capturing and utilization of Solar Energy. This method involves using a mechanical system to track the progression of the sun as it traverses the sky throughout the day. A dual-axis solar tracker such as the one designed and built for this project, can follow the sun both azimuthally and in ...


Ev Clutch System, Jacob Yordy 2020 Central Washington University

Ev Clutch System, Jacob Yordy

All Undergraduate Projects

This project’s goal was to add a clutch system to an electrical vehicle at Central Washington University. The project’s second goal was to have the clutch system improve the electrical vehicle’s fuel economy for Electrathon events. Electrathon uses an equivalent mpg formula to determine an electrical vehicle’s “fuel economy.” Based on the amount of energy in kilo-Watt hours in a gallon of gas, Electrathon assumes each car uses 0.026 gallons of “gas” in the hour long race and the mpg value given to an electrical vehicle is based on the distance the vehicle travels in ...


Robust Multi-Objective Design Of Suspension Systems, Muhammad Ali Khan 2020 Marshall University

Robust Multi-Objective Design Of Suspension Systems, Muhammad Ali Khan

Theses, Dissertations and Capstones

This thesis presents a robust multi-objective optimal design of four-degree-of-freedom passive and semi-active suspension systems. The passive suspension system is used in a racing car and the semi-active suspension is implemented on a passenger car. Mathematical models of the commercial and racing vehicle suspension systems are used in the computer simulations. A robust multi-objective design of the suspension systems is carried out by considering the minimization of three objectives: passenger’s head acceleration (HA), suspension deflection (SD), and tire deflection (TD). The first objective is concerned with the passenger’s health and comfort. The suspension stroke is described by SD ...


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