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Full-Text Articles in Mechanical Engineering

Differential Regulation Of Articular Cartilage Tensile Properties By Igf-1 And Tgf-Β1 During In Vitro Growth, M. E. Stender, N. T. Balcom, B. Berg-Johansen, K. J. Dills, D. Dyk, S. J. Hazelwood, A. C. Chen, R. L. Sah, S. M. Klisch Dec 2011

Differential Regulation Of Articular Cartilage Tensile Properties By Igf-1 And Tgf-Β1 During In Vitro Growth, M. E. Stender, N. T. Balcom, B. Berg-Johansen, K. J. Dills, D. Dyk, S. J. Hazelwood, A. C. Chen, R. L. Sah, S. M. Klisch

Mechanical Engineering

No abstract provided.


Raytheon Uav Launcher, Chad Amonn, Spencer Chin, Alexander (Alex) Deuitch, Mark Jastrzebski Dec 2011

Raytheon Uav Launcher, Chad Amonn, Spencer Chin, Alexander (Alex) Deuitch, Mark Jastrzebski

Mechanical Engineering

No abstract provided.


Wireless Solar-Powered Thermal Imaging Camera, Andy Bonk, Billy Mcvicker, Jacob Richardson Dec 2011

Wireless Solar-Powered Thermal Imaging Camera, Andy Bonk, Billy Mcvicker, Jacob Richardson

Mechanical Engineering

Creation of a mounted wireless self-powered thermal imaging camera system.


Challenger J Hockey Prosthesis Final Design Report, Ryan Bakker, Spencer Noe, Christopher Perkins Dec 2011

Challenger J Hockey Prosthesis Final Design Report, Ryan Bakker, Spencer Noe, Christopher Perkins

Mechanical Engineering

The content of this report is withheld as confidential. QL+ is the owner of the intellectual property created throughout the duration of this project. Dr. Tom Mase (mechanical engineering) maintains a full copy of the report and intends to disseminate it upon completion of the necessary intellectual property protection measures.


Strider, George Cummings, Brian Kreidle, Ricky Lee, Clark Steen Dec 2011

Strider, George Cummings, Brian Kreidle, Ricky Lee, Clark Steen

Mechanical Engineering

No abstract provided.


The Sources Of Heat Generation In Vibrothermography, Jeremy Renshaw, John Chen, Stephen Holland, R. Bruce Thompson Dec 2011

The Sources Of Heat Generation In Vibrothermography, Jeremy Renshaw, John Chen, Stephen Holland, R. Bruce Thompson

Mechanical Engineering

Vibrothermography, or sonic IR, is a nondestructive evaluation technique used to find surface and near surface defects—such as cracks and delaminations—through observations of vibration-induced heat generation. This method has significant interest as an industrial inspection method, however, a lack of understanding of the fundamental physics governing the heat generation process has limited its application despite extensive theoretical, numerical simulation, and experimental work. Significant theoretical and numerical simulation work has been performed, but has yet to be rigorously verified experimentally. This paper presents experimental verification of the sources of heat generation in vibrothermography; specifically friction, plasticity, and viscoelasticity. Specific ...


Robotic Turret, Daniel Romero, Matthew (Matt) Martelle, Scott Mullens, Rachel Diamant Dec 2011

Robotic Turret, Daniel Romero, Matthew (Matt) Martelle, Scott Mullens, Rachel Diamant

Mechanical Engineering

No abstract provided.


Ergonomic Lifter, Bejan Brian Banihashemi, Dylan James Schockemoehl, Andrew Ouellet Dec 2011

Ergonomic Lifter, Bejan Brian Banihashemi, Dylan James Schockemoehl, Andrew Ouellet

Mechanical Engineering

No abstract provided.


Golf Club Quality Control Device, David Mcdermott, Mark Severy Dec 2011

Golf Club Quality Control Device, David Mcdermott, Mark Severy

Mechanical Engineering

No abstract provided.


Historic Calculator Project, Will Harris, Dan Marioni, Kevin Webb, Chad Williams Dec 2011

Historic Calculator Project, Will Harris, Dan Marioni, Kevin Webb, Chad Williams

Mechanical Engineering

The Deutsches Museum of Munich, Germany requested add-on components to their mechanical calculator exhibit. The end-goal is to produce an interactive 3D model in software to demonstrate the functions of the Braun-Vayringe Machine (BVM). There will be four students working on this project at California Polytechnic State University, San Luis Obispo: two mechanical engineers (Dan Marioni and Will Harris) and two computer engineers (Chad Williams and Kevin Webb).This project involves the coordination of three facilities; the Deutsches Museum, and the Mechanical and Computer Science Departments of Cal Poly. The name of the project is known as the Historic Calculator ...


Engine Simulation And Diagnostic Test Bed: Final Design Report, Jeff Lewis, Cody Scott, Todd Smith Dec 2011

Engine Simulation And Diagnostic Test Bed: Final Design Report, Jeff Lewis, Cody Scott, Todd Smith

Mechanical Engineering

The San Luis Obispo High School Automotive Technology Shop has a 1991 Buick V-6 Engine which uses the OBD-I (On-Board Diagnostics, generation one) standard for diagnostic testing and troubleshooting. In order to expand the capabilities of the Automotive Technology program and allow students to gain first-hand experience troubleshooting older OBD-I engines, the shop has a need for this engine to become part of a diagnostic and troubleshooting test bed. Some of the diagnostic tests the students will perform include checking cylinder pressure, monitoring coolant system temperatures, interpreting error codes from the OBD-I system, and conducting enhanced smog testing. All of ...


Golf Prosthesis Final Design Report, Joseph Barcus, Lauren Wilson, Ryan Satcher Dec 2011

Golf Prosthesis Final Design Report, Joseph Barcus, Lauren Wilson, Ryan Satcher

Mechanical Engineering

A prosthetic attachment designed to allow an upper extremity bilateral amputee to golf.


Floating Tube Heat Exchangers, Patrick Harris, Christina Gedeon, Leonel Medrano, George Milam Dec 2011

Floating Tube Heat Exchangers, Patrick Harris, Christina Gedeon, Leonel Medrano, George Milam

Mechanical Engineering

With the slowly diminishing supply of fossil fuels across the world and the heightened risk of carbon dioxide pollution leading to global warming, a shift towards renewable energy is gaining momentum. Recent advances in wind and solar power technology have increased the power density of alternative sources while decreasing the cost per kilowatt-hour, but the technology has not become advanced enough yet for large scale deployment. Combined Power Cooperative has developed a revolutionary design for a concentrated solar power plant that utilizes Fresnel reflectors and a large body of water in which to install them. In addition to being low-cost ...


Wiihopp, Jeff Christian, Ben Hoselton, Derek Simon Dec 2011

Wiihopp, Jeff Christian, Ben Hoselton, Derek Simon

Mechanical Engineering

Childhood obesity is becoming a growing problem in the United States. According to the CDC, childhood obesity has more than tripled in the past 30 years [7]. It can lead to health problems previously reserved for adults, such as diabetes, high blood pressure, and high cholesterol. For the team WiiHopp project, we plan to turn a JumpSport mini-trampoline into a controller for the Nintendo Wii console. The hope is to help turn the problem of video games and the laziness surrounding them into an active solution to combat the problem of childhood obesity.

Our goal is to produce an add-on ...


Access|Closure Balloon Catheter Redesign Project, Keenan Bamburg, Yvette Castillo, Elizabeth Eskildsen Dec 2011

Access|Closure Balloon Catheter Redesign Project, Keenan Bamburg, Yvette Castillo, Elizabeth Eskildsen

Mechanical Engineering

No abstract provided.


Engineering On The Rose Float: Final Project Report, Stephen Boles, Garrett Dong, Peter Hoonhout Nov 2011

Engineering On The Rose Float: Final Project Report, Stephen Boles, Garrett Dong, Peter Hoonhout

Mechanical Engineering

The purpose of this project is to design the simple mechanical movement systems of the 2012 Cal Poly Tournament of Roses Float Parade to prevent failure. Three mechanisms were designed. One of the mechanisms is a tall building that has a superhero and helicopter rotating around the top; it also has the ability to rotate the top 2/3rds of the mechanism to a 90 degree angle to fit under a 16.5 foot bridge. Another mechanism is the cars that look like they are driving on the pod’s road surface via train tracks underneath the surface. The ...


Modeling The Collagen Fibril Network Of Biological Tissues As A Nonlinearly Elastic Material Using A Continuous Volume Fraction Distribution Function, Reza Shirazi, Pasquale Vena, Robert L. Sah, Stephen M. Klisch Sep 2011

Modeling The Collagen Fibril Network Of Biological Tissues As A Nonlinearly Elastic Material Using A Continuous Volume Fraction Distribution Function, Reza Shirazi, Pasquale Vena, Robert L. Sah, Stephen M. Klisch

Mechanical Engineering

Despite distinct mechanical functions, biological soft tissues have a common microstructure in which a ground matrix is reinforced by a collagen fibril network. The microstructural properties of the collagen network contribute to continuum mechanical tissue properties that are strongly anisotropic with tensile-compressive asymmetry. In this study, a novel approach based on a continuous distribution of collagen fibril volume fractions is developed to model fibril reinforced soft tissues as nonlinearly elastic and anisotropic material. Compared with other approaches that use a normalized number of fibrils for the definition of the distribution function, this representation is based on a distribution parameter (i ...


Contribution Of Proteoglycan Osmotic Swelling Pressure To The Compressive Properties Of Articular Cartilage, Eunhee Han, Silvia S. Chen, Stephen M. Klisch, Robert L. Sah Aug 2011

Contribution Of Proteoglycan Osmotic Swelling Pressure To The Compressive Properties Of Articular Cartilage, Eunhee Han, Silvia S. Chen, Stephen M. Klisch, Robert L. Sah

Mechanical Engineering

The negatively charged proteoglycans (PG) provide compressive resistance to articular cartilage by means of their fixed charge density (FCD) and high osmotic pressure (πPG), and the collagen network (CN) provides the restraining forces to counterbalance πPG. Our objectives in this work were to: 1), account for collagen intrafibrillar water when transforming biochemical measurements into a FCD-πPG relationship; 2), compute πPG and CN contributions to the compressive behavior of full-thickness cartilage during bovine growth (fetal, calf, and adult) and human adult aging (young and old); and 3), predict the effect of depth from the articular surface on ...


Vibroacoustic Study Of Circular Cylindrical Tubes In Roller Coaster Rails, Joshua I. Davis, Charles Birdsong, Harold M. Cota Jul 2011

Vibroacoustic Study Of Circular Cylindrical Tubes In Roller Coaster Rails, Joshua I. Davis, Charles Birdsong, Harold M. Cota

Mechanical Engineering

Excessive noise generated by roller coasters during operation is a significant issue for amusement parks located near residential and business districts. Previous work showed that filling the rails with sand and pea gravel can provide noise reduction levels of up to 10 and 15 decibels. However, using damping materials may require additional support structures to accommodate the weight increase and, consequently, raise installation costs. This paper presents field results that characterize sound and vibration of roller coasters with different rail geometry and fill. Finite element modeling is used to compute the theoretical natural frequencies and mode shapes of a typical ...


Refrigerant Mass Migration Modeling And Simulation For Air Conditioning Systems, Bin Li, Steffen Peuker, Predrag S. Hrnjak, Andrew G. Alleyne Jul 2011

Refrigerant Mass Migration Modeling And Simulation For Air Conditioning Systems, Bin Li, Steffen Peuker, Predrag S. Hrnjak, Andrew G. Alleyne

Mechanical Engineering

Refrigerant mass migration and redistribution are regarded as key factors affecting the cycling performance of air conditioning and refrigeration systems. A dynamic model of an R134a automotive air conditioning system is presented as an example in this paper to capture the refrigerant migration during compressor shut-down and start-up operations. Model validation against experimental data demonstrates the capabilities of the modeling approach in predicting the refrigerant mass migration among the components during shut-down, and the resulting refrigerant redistribution behaviors during start-up. These results represent the first refrigerant mass migration prediction in a validated dynamic system model. In addition, the potential of ...


A Simple Lab Project Integrating Theoretical, Numerical, And Experimental Stress Analysis, Peter Schuster Jun 2011

A Simple Lab Project Integrating Theoretical, Numerical, And Experimental Stress Analysis, Peter Schuster

Mechanical Engineering

Learning is enhanced when students consider problems from different perspectives. Unfortunately, in stress analysis courses, the depth of the mathematical analysis and limited time and resources often restricts the focus to traditional closed-form solutions occasionally supplemented with simple demonstrations. In order to enhance student engagement and understanding, a lab mini-project was developed for teaching Castigliano’s method for structural analysis in a stress analysis course.

The mini-project consists of a design evaluation task which is investigated using three different methods: closed-form analysis, finite element analysis, and simple model build and test. The task is to select the better of two ...


An Industry-University Partnership Case Study, Peter Schuster Jun 2011

An Industry-University Partnership Case Study, Peter Schuster

Mechanical Engineering

At many universities, senior undergraduate mechanical engineers work in teams on industry-sponsored capstone design projects. These projects provide an excellent opportunity for students to synthesize their courses, work with the more realistic deadlines and expectations of industry, and interact with company representatives. It also give industrial partners a chance to become educational partners with the university, preview potential new hires, and complete some noncritical projects at low cost.

This paper presents a case study of a successful six-year partnership between the Automotive Bumper Project committee of the American Iron & Steel Institute (AISI) and a mechanical engineering department. The AISI Bumper ...


Bevcool, Matthew (Matt) Slette, Ryan Talyat, Camille Sybert Jun 2011

Bevcool, Matthew (Matt) Slette, Ryan Talyat, Camille Sybert

Mechanical Engineering

A consumer product for rapidly cooling canned and bottled beverages.


Automated Mail Stacker, Robert (Rj) Atkinson, Stephanie Henning, Tyler Wetzel Jun 2011

Automated Mail Stacker, Robert (Rj) Atkinson, Stephanie Henning, Tyler Wetzel

Mechanical Engineering

No abstract provided.


Port Flow Test System, Daniel Chairez, Chelsea E. Crawford, Daniel S. Welch Jun 2011

Port Flow Test System, Daniel Chairez, Chelsea E. Crawford, Daniel S. Welch

Mechanical Engineering

Solar Turbines Gas Compressor Engineering Division of San Diego, California called upon the Mechanical Engineering students of California Polytechnic University, San Luis Obispo to provide recommendations for optimization of compressor end cap port design. Various sizes of compressors have end caps with numerous ports that exchange fluids between the inside and outside of the working fluid pressure vessel. Because so many ports must exist on the end caps, unusual flow paths are created to supply the appropriate location within the compressor. These flow paths commonly consist of a drilled inlet hole which intersects with a sudden expansion. The sudden expansion ...


Multiple Motors With Single Controller, Jason Eugene Barbeiro, Benjamin Erik Johnson, Abraham Garza Jun 2011

Multiple Motors With Single Controller, Jason Eugene Barbeiro, Benjamin Erik Johnson, Abraham Garza

Mechanical Engineering

No abstract provided.


Rapid Animatronic Target System, Brandon Keith Bray, Matt Gerhardt Guise, Martin Thomas Quinn Jun 2011

Rapid Animatronic Target System, Brandon Keith Bray, Matt Gerhardt Guise, Martin Thomas Quinn

Mechanical Engineering

No abstract provided.


Thrust-Vector Control, Dane Larkin, Harsimran Singh Jun 2011

Thrust-Vector Control, Dane Larkin, Harsimran Singh

Mechanical Engineering

Mission Statement

The purpose of this project is to design, build, and test a thrust-vectoring rocket nozzle which will aid in controlling the trajectory of a solid-booster rocket. The system prototype must meet the requirements set forth by the sponsoring enterprise.

The Enterprise

Stellar Exploration is a small space systems technology company located in San Luis Obispo, CA. Stellar Exploration is currently seeking a thrust-vectoring system for its Silver Sword rocket.

Project Scope

The design and analysis portion of this project accounted for a system that would be mounted on to a rocket for operational flight. Therefore, this team has ...


Solar Powered Oil Well Site, Jonathan Hyland, Matthew Mastro, Kyle Moore Jun 2011

Solar Powered Oil Well Site, Jonathan Hyland, Matthew Mastro, Kyle Moore

Mechanical Engineering

No abstract provided.


Piedras Blancas Light Station Vista Point Improvement Plan, Larissa Heeren, Reuben Juster, Annamarie Usher, John Rossi, Nick Mitchell Jun 2011

Piedras Blancas Light Station Vista Point Improvement Plan, Larissa Heeren, Reuben Juster, Annamarie Usher, John Rossi, Nick Mitchell

Mechanical Engineering

Piedras Blancas Light station Improvement Involved the design of two separate parking lot/vista point plans as well as the creation of a concrete Iron Ranger located near the gift shop on site.