ttu logo

tennessee technological university

Mechanical Engineering

Previous Projects (Fall 2013)

Team Members

Amber Butcher, Daniel Hamblen, Albert Painter, and Hannah Ross

Project Overview

One of the fastest growing technologies of the 21 st century is 3D printing. 3D printing is a method of depositing material in successive layers to create complex structures. Fused Deposition Material (FDM) printing is the most common type of 3D printing. In the FDM method a spool of thermoplastic is fed through a heated nozzle, and the heated plastic is deposited onto the build plate in a thin layer. This layer quickly cools, allowing the next layer to build on top of it. This method is often used in rapid prototyping applications. However, rapid prototyping is not the only common application of 3D printing; the use of 3D printing in areas outside of manufacturing has become increasingly widespread over the past decade. Biomedical applications are a particularly promising frontier for 3D printing.


Team Members

Nick DiAngelo, Chris Kirk, Isaiyas Marroquin, Marquis Merritt, Justin White, Chris Wright

Project Overview

Handicapped individuals have difficulty developing strength and motor skills to the level of able-bodied people. That is why this hand-powered tricycle was proposed. By designing and building this simple machine, individuals with special needs will be able to ride a bike in a way similar to able-bodied people. It will also help them develop strength, balance, and gross motor skills while having fun in the process. Reaching out to the community provides a way for the group to improve the lives of many children over several years to come.

IMG 0813

Team Members

Spencer Artz, Harold Balthrop, Justin Lewis, Michael Mason, Joshua Moser, Garrett Perry

Project Overview

Westcrete Building Systems is a startup company that has developed panels for building more efficient, weatherproof homes (commercial and residential). One of their current processes for constructing these panels is less than desirable and a new process needs to be developed. The process under review is making the holes in the foam that is used in the fabrication of the panels. Currently the use of ball bearings is utilized by heating them in a turkey fryer and placing them on the foam. Even though this method does produce satisfactory holes through thin portions of foam, it is still not ideal for large scale production. Induction heating and resistance heating are just two examples of safer, more efficient ways of heating. Also, there are additional methods that could be used to make the holes such as drilling or even heated rods. These processes are examined and tested for the purposes for this project.


Team Members

Joshua Blair, Mark Straussberger, Robby Brown, Andrew Redmon, Lance Bailey, Ethan Livingston

Project Overview

The task assigned to this team is to design and construct a small-scale prototype process that will effectively separate combustible and noncombustible materials. The combustible materials will then be sent back through a previous process for further refinement while the noncombustible materials will be recycled separately.

IMG 0816

Team Members

Tim Avello, Alex Bagoli, Chance Holt, Zach Medina, Jie Tang, John Till

Project Overview

WestCrete is a young company with a new and innovative idea for residential construction. They currently are developing a method to build houses out of concrete. The average house is 2,500 square foot and will cost approximately $250,000 to $375,000. Oriented strand board (OSB) is used in the siding of the house. The typical OSB used in constructing a house is .5” or .042’ thick. This means that a house uses 378 cubic feet of OSB. The object of this project is to efficiently drill holes in the OSB boards. The design and construction of an automated machine to drill precise dimensioned holes would cut down on man power and time spent on each OSB board, which is currently being drilled by hand. The design will utilize drills that will automatically drop and rise to cut the desired holes simultaneously with the correct spacing between holes. Once the drills are raised a worker will move the OSB a desired amount to achieve the required offset between holes, and drill a new set. This process will significantly cut down time spent per board which will save WestCrete a considerable amount of money.

IMG 0812

Team Members

Thomas Burks, Steven Childers,Nick East, William McMillen, Andrew C Nix and Jo Thompson

Project Overview

WestCrete, an innovative construction company, specializing in building tornado proof structures, is currently using two separate processes to cut the foam they use in fabricating wall and roof panels. They desire this cut to be made in one process. The proposed method for modifying the foam is a hot-wire cutting assembly, which will precisely cut and cauterize the foam. In order to obtain the desired mitered and gable angles in the foam, an adjustable hot-wire attached to a rigid table must be designed. With this design WestCrete will have an assembly that precisely cuts the two angles simultaneously, therefore more efficiently. The amount of labor WestCrete currently uses to make these cuts will be reduced in half by this design. The design proposed will accomplish all goals and restraints given by WestCrete.

Previous Projects (Pre-2013)

Project Outline

This proposed project is to design and build a jack for a modified/lifted all terrain vehicle (ATV). Modified ATVs have higher ground clearance than standard ATVs, so most jacks do not offer adequate lift. A jack that will meet the height, stability and functionality requirements is desired.

Defined Requirements

  • Deliver an overall lift height of 22 inches.
  • Operate with 12 inches of vertical arm travel
  • Have an 1100 pound lift capacity
  • Be portable by one person (will have wheels, collapsible handle, and fit through a standard door)
  • Powered by conventional shop air supplied by a compressor
  • Pressure gage for visual on system pressure during operation
  • Utilize pressure regulator in the air delivery system
  • All air lines securely mounted and shielded from moving parts
  • Airbags to be mounted so that they operate in usable limits set forth by manufacturer
All projects must consider safety and material issues.

Drawings

Airbag_Mounting_Locations-1


Airbag Mouting Locations

Jack_Assembly_Drawing


ATV Parts for Assembly

Jack_Diagram


Fully Assembled ATV Jack

Student Team Members

  • Matthew Dickerson
  • Adam Goff
  • Justin Hethcote
  • Jay Hollowell
  • Justin Stacy
  • Robert Wiseman

me/seniorproject/photos/highboy/

Project Outline

This proposed project is to design and build a solar collector plate to rotate about two axi in order to track the daily and annual path of the sun. The collector will be connected to a water heater via a pump and piping to transfer thermal energy to water in order to provide domestic hot water. The project will be able to accurately track the sun, provide hot water under both optimal and non-optimal conditions, prevent water line freezing via a bypass loop, and prevent scalding with an accurately controlled mixing valve.

Defined Objectives

  • Design flat panel solar collector in conjunction with a standard electric water heater to transfer solar energy into water for domestic use
  • Design controlled mechanisms to track the daily and annual relative location of the sun to the earth so that the surface of the solar collector is always positioned normal to direct sunlight. Tracking system will be fully operable at any location on earth without additional programming
  • Design scald preventing piping sequence using a three-way modulating valve to mix hot water exiting the tank with municipal water to reduce the output temperature to no greater than 110 degrees Fahrenheit
  • Control water heater's electric element in order to supply thermal energy to the water in the storage tank during the night or cloudy periods
  • Size and select a pump to circulate water through the solar collector and storage tank
  • Control water pump so that it does not run during the night or cloudy periods when there is not significant thermal gain to be collected
  • Provide emergency freeze protection by means of a by-pass loop activated by the temperature of the collector plate
  • Size and select an expansion tank to accommodate the thermal expansion of the water in the system

Drawings

WaterHeaterSchematic
Schematic Drawing

SolarCollectorDrawing
Solar Collector Drawing

PipingLayout
Piping Layout

Student Team Members

  • Josh Green
  • Daniel Haire
  • Jeffrey Rice
  • Ryan Robbins
  • Matt Whaley
me/seniorproject/photos/solarwaterheat

Project Outline

This proposed project is to design and fabricate a vacuum forming machine. This vacuum forming workstation will make plastic guards (such as a chain guard) to protect key components of TTU's Mini Baja car from the harsh environments faced in every Mini Baja challenge. The guards will also serve as protection for bystanders who may be harmed in the event of a part failure. Finally, the guards will protect the operator from getting fingers or clothing stuck in moving components.

Defined Requirements

  • Take no more than three minutes to form a part (after pre-heating plastic sheeting)
  • Obtain the lowest voltage heating element that will provide the most consistent heat distribution
  • Be able to make all shapes and sizes of plastic parts
  • Make a plastic part as large as 1.25' x 3' x 0.5
  • Be a portable machine that can be easily moved
  • Be an easily used machine with a 90% reliability rate
  • Make plastic parts at a low cost (cost to include only plastic sheeting and electricity to run heater and pumping system)
  • Be able to form parts using various thicknesses of plastic materials
All projects must consider safety and material issues.

Drawings

vfw03
Chassis Assembly

vfw02
Overview of Assembly

vfw
Conceptual Drawing

Student Team Members

  • Chris Abbott
  • Chris Bunn
  • Daniel Gibbs
  • Philip Plunk
  • Brandon Risko
  • Toby Worm
me/seniorproject/photos/vacformwork