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Articles 1 - 27 of 27
Full-Text Articles in Engineering
Wakeboard Winch, Eric Christensen
Wakeboard Winch, Eric Christensen
Mechanical Engineering and Technology Senior Projects
A wakeboard winch is a stationary device used to tow wakeboard riders through a body of water allowing riders to access locations that may be too shallow for boats or where motorboat restrictions apply. For this instance, the device will be intended to use on a small lake where motorized boats are prohibited but will also possess a transportable design so it may be used in other locations. Winches that can be purchased from manufacturers tend to be expensive and unaffordable for most people while many homemade winches tend to lack the same performance capabilities as manufactured winches. The principal …
Conversion Casting From A36 Steel To Grey Iron, Chris Nichols
Conversion Casting From A36 Steel To Grey Iron, Chris Nichols
Mechanical Engineering and Technology Senior Projects
Conversion castings are used in manufacturing to reduce time and costs of the production of machined parts. This project incorporated a machined production component from a local manufacturer and designed and produced an equivalent component using the casting process. The casting material chosen needed to be able to withstand all tension and compression forces when the component is used in service along with locations and dimensions of holes needed to be in accordance with all specified tolerances. The casting design process had to account for draft issues, shrinkage during material solidification, porosity and internal cavities formed during solidification, and overall …
Victair Mistifier Gearbox: Metal Casted Housing, Gabe Bruno, Casey Mcfarlen, Ricky Skinner
Victair Mistifier Gearbox: Metal Casted Housing, Gabe Bruno, Casey Mcfarlen, Ricky Skinner
Mechanical Engineering and Technology Senior Projects
The current global population is 7.2 billion. It is projected to increase by 1 billion over the next 12 years. There is only 5% of usable farming land left on earth. Food is a resource that humans must consume daily. These facts undeniably lead to a shortage of food in the future. It is essential to mankind survival that farming becomes more efficient and sustainable. This provided the motivation to design a more efficient transmission for the Victair Mistifier (orchard and vineyard sprayer). Victair Mistifiers are designed, engineered, and manufactured by H.F. Hauff Company in Yakima, WA. The Hauff Company’s …
Solar Evaporative Fan Coil Unit, Samuel Budnick, Kyle Kluever, Jeremy Dickson
Solar Evaporative Fan Coil Unit, Samuel Budnick, Kyle Kluever, Jeremy Dickson
Mechanical Engineering and Technology Senior Projects
The purpose of any engineering project is to anticipate a need and meet that need through prediction analysis and design. Over 70% of the nation’s energy is consumed by building infrastructure such as HVAC systems, electrical, etc. HVAC systems use boilers to generate hot water or steam to heat buildings and evaporative chillers to provide air conditioning, much like the central plant here on campus. The project included the construction of a solar collector that will heat water to 140F in order to run it through a heat exchanger that can have air passed over it. An evaporative chiller was …
Plate And Frame Heat Exchanger, Eric Johnson
Plate And Frame Heat Exchanger, Eric Johnson
Mechanical Engineering and Technology Senior Projects
Heat exchangers are a commonly used device in many different industries, with many different applications. The heat exchanger used in the brewing program here at CWU is a brazed plate and frame heat exchanger, so it cannot be taken apart for cleaning. Due to this, the overall efficiency of the heat exchanger will be reduced, causing fouling, because of the buildup of brewing material. In order to effectively combat this fouling, a heat exchanger must be constructed that can be disassembled for cleaning, and then reassembled with ease, while still being able to perform the same amount of heat transfer …
Composite Brake Rotor Assembly By Utilizing Replaceable Friction Surfaces, John Evert
Composite Brake Rotor Assembly By Utilizing Replaceable Friction Surfaces, John Evert
Mechanical Engineering and Technology Senior Projects
This project investigated a proof of concept design involving a rotor fabricated from aluminum with replaceable friction surfaces with greater or equal performance characteristics in order to reduce cost and maintenance. The replaceable friction surfaces provide a means to mitigate cost to the end user. The structure is constrained by the dimensions, 11.75” diameter and 1.25” width and serves as a direct replacement rotor for a circle track racecar. Analyses provide a direct comparison in static mass, moments of inertia, and forced convection thermal calculations in order to determine if the concept was viable. Requirements for a successful design were …
Collapsible Wheelchair Wheel Design, Joseph Fischer
Collapsible Wheelchair Wheel Design, Joseph Fischer
Mechanical Engineering and Technology Senior Projects
Portability, convenience, and efficiency are becoming more and more prevalent as technology increases. This is also true with wheelchairs; Wheelchairs are being designed to fold and collapse smaller and smaller with every iteration but there is one parameter that remains constant, the wheel. No matter how small the wheelchair frame folds it is always limited by its’ wheel’s diameter. This project aims to create a collapsible wheel design to accompany a foldable wheelchair in order to make it more portable and storable. Since the diameter of the wheel is the limiting factor in a foldable wheelchair, the relatively small width …
Toyota Disc Brake Conversion Brackets, Geoffrey Gibson
Toyota Disc Brake Conversion Brackets, Geoffrey Gibson
Mechanical Engineering and Technology Senior Projects
A common issue with Toyota pickups from the 1980’s is the factory braking system is not responsive enough for the driver to properly brake during an emergency situation. The cause of the poor response in braking comes from the drum brakes that are on the rear of the vehicle. Aftermarket vendors offered disc brake conversions that change the brakes on the rear axle from drum to disc. The aftermarket brackets that are in the conversion are thick and bulky adding excess weight to the already heavy pickup. These thick brackets in the conversion do not retain the factory emergency brake …
Branch Cutter Adapter For Electric Impact Gun, Cullen Hubbard
Branch Cutter Adapter For Electric Impact Gun, Cullen Hubbard
Mechanical Engineering and Technology Senior Projects
There are many homeowners that would like to maintain the trees around their homes but cannot do so. The drive of this project was to develop a 0g mechanism which would provide a senior citizen or an individual with limited upper body strength, with the ability to cut through branches that would otherwise pose challenging. The design would allow the end user to cut a branch by simply pulling a trigger. A branch cutting attachment was designed to attach to the front of a DeWALT cordless impact gun. This attachment will convert the rotational torque and motion from the impact …
Instron Tt-C 1055 Redesign For Tensile Testing Lab Use: The Design And Construction Of Tensile Test Gripping Assemblies, Melvin Lee Hortman
Instron Tt-C 1055 Redesign For Tensile Testing Lab Use: The Design And Construction Of Tensile Test Gripping Assemblies, Melvin Lee Hortman
Mechanical Engineering and Technology Senior Projects
The goal of this project was to design, manufacture, and test a pair of cheap gripping assemblies with mount adapters to the Instron TT-C tensile testing machine, which was currently out of service in the Materials Laboratory of Central Washington University’s Hogue Technology Building, for educational use. The gripping assemblies would enable tensile, or pulling force, tests on tensile specimens up to 20,000 lbs, being able to test high carbon steel. The gripping assemblies and mounting adapters were designed and manufactured completely by a Central Washington University Mechanical Engineering Technology student who used the cumulative knowledge gained from engineering analysis …
Composite Snowmobile Suspension Assembly, Michael Villarma
Composite Snowmobile Suspension Assembly, Michael Villarma
Mechanical Engineering and Technology Senior Projects
Snowmobile technology is constantly evolving and incorporating new ideas into products for the consumer to enjoy. After market manufactures are competing among themselves for the top position in suspension technology, yet none have broken the boundaries and really pushed to the next level, until now. The objective of this design was to provide the consumer with a lightweight and simplistic suspension system that would meet the performance demands of the consumer market. In order to meet the strength to weight ratio requirements of this design, composites were implemented to provide the necessary structural strength for the overall system. A one …
Custom Glasses Cases, Nikolas Ivan Klukas
Custom Glasses Cases, Nikolas Ivan Klukas
Mechanical Engineering and Technology Senior Projects
The modern market is centralized around technological advances that improve and better everyday life. With approximately 150 million Americans that use corrective eye-ware on a daily basis, the need for improved technology in glasses cases is inevitable. Current glasses cases work to either protect the glasses and are big and bulky, or are made smaller to be more easily transported. The concept is to take any pair of glasses and make a custom case for them. The programs being utilized to complete the project are solidworks and excel. The process is started by making a base layout of the glasses …
Mx Snow Ski, Jordan Olson
Mx Snow Ski, Jordan Olson
Mechanical Engineering and Technology Senior Projects
Living in the Pacific Northwest has many perks when it comes to enjoying the outdoors. All of the seasons can be enjoyed, as well as being completely surrounded by beautiful rolling hills and mountains. Being someone who continuously enjoys the outdoors year-round it’s always fun to try new hobbies. The problem with owning a dirt bike is that most people ride during the dryer and warmer seasons of the year. This project would enable the bike to be ridden even during the snowy winter season. Riding a dirt bike in snow has been recently explored by only a few companies …
Dump Bed Lifting Mechanism, Zachary Pate
Dump Bed Lifting Mechanism, Zachary Pate
Mechanical Engineering and Technology Senior Projects
The project was motivated by a need to create a device that would cause a small truck or trailer bed to lift up quickly and dump its contents. This would eliminate the need to use manual physical labor, which is both slow and exhausting. Additional design constraints require the stroke and diameter of the cylinder to be 6” x2”. A design was conceived with the intent to incorporate a less costly device onto an existing trailer frame that would lift the bed and dump the load. With this in mind, a scissor lift device would have two basic requirements, first …
Pivoting Motocross Foot Pegs, Michael Leblanc
Pivoting Motocross Foot Pegs, Michael Leblanc
Mechanical Engineering and Technology Senior Projects
The ability to keep a dirt bike rider’s feet in full contact with the foot pegs at all times is something all riders’ face when riding their bike. The foot pegs that come factory and aftermarket today are universally static and non-rotational which prevent the ability for maximum contact to be maintained. During various riding positions, a rider’s foot can partially become disconnected from the peg allowing for a loss of potential control and balance/stability. The solution devised was a set of pegs that have the ability to rotate with the rider’s foot. The rotational ability of the pegs allow …
Space Saver Bike Rack, Taylor Johnson
Space Saver Bike Rack, Taylor Johnson
Mechanical Engineering and Technology Senior Projects
Apartment living can be crowded especially for a cyclist. Bicycles are bulky and difficult to store. A device is needed to store two road bikes weighing up to 40 pounds each while saving as much space as possible. To solve this problem many iterations of various free standing and wall-leaning bike rack designs were drawn. Evolution of the design can be traced through the drawings included in the report. The first design analyzed was a free standing rack. After calculations and adjustments this design was going to have to be very bulky in order to achieve the stability requirements. The …
Solar Evaporative Fan Coil Unit, Kyle Kluever, Samuel Budnick, Jeremy Dickson
Solar Evaporative Fan Coil Unit, Kyle Kluever, Samuel Budnick, Jeremy Dickson
Mechanical Engineering and Technology Senior Projects
The purpose of any engineering project is to anticipate a need and meet that need through prediction analysis and design. Over 70% of the nation’s energy is consumed by building infrastructure such as HVAC systems, electrical, etc. HVAC systems use boilers to generate hot water or steam to heat buildings and evaporative chillers to provide air conditioning, much like the central plant on campus. The project included the construction of a solar collector that will heat water to 140F in order to run it through a heat exchanger that can have air passed over it. An evaporative chiller was also …
Catmobile Front Suspension, Adam Romine
Catmobile Front Suspension, Adam Romine
Mechanical Engineering and Technology Senior Projects
Each year electric vehicles become more and more popular. The electric vehicle that the Central Washington University Electric Vehicle Club is building needs a front suspension. The vehicle is being built to compete in the Electrathon America Race in May of 2015. The suspension attaches to the wheels and attaches to the frame of the vehicle and provides bump dampening. The suspension was built was using a single swing arm type design. This design consists of six parts that are welded and bolted together to connect the wheel to the frame. The shock absorber that is attached to the single …
Improved Tennis Racquet Stringer, William Ligon Bruno
Improved Tennis Racquet Stringer, William Ligon Bruno
Mechanical Engineering and Technology Senior Projects
What design change to a conventional ATS Sports model drop-weight stringer can be made to decrease the stringing time for a tennis racquet? To answer this, a detailed analysis on design, manufacturability, and structural integrity was done to design a product that is manufacturable within the timeframe and produces a device which decreases the stringing time. First, an analysis on each vital component was done including the ratcheting components, pressure arm/drop mass, etc. Second, a virtual model was created with auxiliary components to test different designs. Through this analysis and the virtual model it was indicated that a duel stringing …
The Phone In The Sky ---- Quad-Copter For Aerial Video, Heng Wei Zhang
The Phone In The Sky ---- Quad-Copter For Aerial Video, Heng Wei Zhang
Mechanical Engineering and Technology Senior Projects
With the development of aircraft model technology, quadcopters equipped with cameras are used for aerial video more and more frequently. Cell phones, moreover, allow people to share photos online immediately, so many people prefer to take photos or videos by cell phones instead with expensive cameras. Thus, the purpose of this project is to design and build a light weight quadcopter frame and select the system components that allow the quadcopter to fly smoothly while carrying a cell phone for aerial video. The method for creating the quadcopter is separated into three steps: design, build, and test. The design part …
Seat Jack, Justin Worden
Seat Jack, Justin Worden
Mechanical Engineering and Technology Senior Projects
Many people around the world struggle with mobility. One of the biggest obstacles for who may struggle in this area is the simple task of moving from a sitting position to their feet. For some, this is the only thing that keeps them from walking around. Creating a portable device to help move a person from their chair to their feet would extremely aid the efforts of completing this simple task at any given moment. This report provides a proposed solution for this simple reoccurring task that countless people painfully struggle with every day. In order to make this device …
Solar Evaporative Fan Coil Unit, Jeremy Dickson, Sam Budnick, Kyle Kluever
Solar Evaporative Fan Coil Unit, Jeremy Dickson, Sam Budnick, Kyle Kluever
Mechanical Engineering and Technology Senior Projects
The purpose of any engineering project is to anticipate a need and meet that need through prediction analysis and design. Over 70% of the nation’s energy is consumed by building infrastructure such as HVAC systems, electrical, etc. HVAC systems use boilers to generate hot water or steam to heat buildings and chillers to provide cold water for cooling. The overall solar evaporative fan coil unit project involves the design and construction of a system that will heat and cool air using a solar collector and an evaporative chiller. This report covers the design and construction of the evaporative chiller specifically. …
Rc Baja Competition Drive Train And Differential, Chelsea Dowdell, Nathan Wilhelm
Rc Baja Competition Drive Train And Differential, Chelsea Dowdell, Nathan Wilhelm
Mechanical Engineering and Technology Senior Projects
The American Society of Mechanical Engineers holds regional student design competitions each year with both a reoccurring RC Baja competition with a new challenge course each year. This project covers the design and manufacturing of components for a radio controlled car to race in the annual ASME RC Baja competition. For this project the car was broken down into its component subsystems and divided between two partners. It was then determined which components of each respective subsystem could be purchased and which required design and manufacture within the rules set forth in the ASME Baja competition rule book. All of …
Asme R/C Baja Car Suspension And Steering, Nathan Wilhelm
Asme R/C Baja Car Suspension And Steering, Nathan Wilhelm
Mechanical Engineering and Technology Senior Projects
The American Society of Mechanical Engineers holds regional student design competitions each year with both a reoccurring RC Baja competition with a new challenge course each year. This project covers the design and manufacturing of components for a radio controlled car to race in the annual ASME RC Baja competition. For this project the car was broken down into its component subsystems and divided between two partners. It was then determined which components of each respective subsystem could be purchased and which required design and manufacture within the rules set forth in the ASME Baja competition rule book. All of …
Emulsion Pump Pressure Relief, Aaron Greean
Emulsion Pump Pressure Relief, Aaron Greean
Mechanical Engineering and Technology Senior Projects
Over time the harsh outdoor environment wears away at asphalt surfaces. Asphalt emulsion is sprayed onto the surface to act as a sacrificial barrier. To pump this asphalt emulsion for spray application an effective pressure relief device must be incorporated. High pressure is needed to achieve the desired spray pattern, but this same pressure can cause components to fail in the presence of a pressure spike. Hydraulically driven positive displacement pumps are used to pump the emulsion, so a pinched hoses or a clog in the system results in a severe pressure spike. Due to the emulsions viscosity and abrasive …
Collapsible Bicycle Frame, Keith Stone
Collapsible Bicycle Frame, Keith Stone
Mechanical Engineering and Technology Senior Projects
There are many situations where people could choose to ride a bicycle, whether it is to go to school, to a job, to meet with friends, or just for recreational purposes. However, once people reach their destination and have a break between their trips, they are left with a bicycle with little means of storing it while they go about their day. Some people buy a bike lock so that they can secure it in a safe location, while others may just lean it against a wall or even roll it into the building with them. However, according to FBI …
Victair Mistifier Gearbox: Shafts And Bearings, Rickey Skinner, Gabe Bruno, Casey Mcfarlen
Victair Mistifier Gearbox: Shafts And Bearings, Rickey Skinner, Gabe Bruno, Casey Mcfarlen
Mechanical Engineering and Technology Senior Projects
The current global population is 7.2 billion. It is projected to increase by 1 billion over the next 12 years. There is only 5% of usable farming land left on earth. Food is a resource that humans must consume daily. These facts undeniably lead to a shortage of food in the future. It is essential to mankind survival that farming becomes more efficient and sustainable. This provided the motivation to design a more efficient transmission for the Victair Mistifier (orchard and vineyard sprayer). Victair Mistifiers are designed, engineered, and manufactured by H.F. Hauff Company in Yakima, WA. The Hauff Company’s …