Engineering Commons^™

Fiber Length Attrition In Additive Manufacturing, Michael Chapiro

Materials Engineering

Chopped carbon fibers are used as reinforcements in thermoplastics, but the viscous shear forces that arise in melt-processing reduces the fiber length well below its critical length resulting in only moderate strength and stiffness gains compared to the neat resin. This research project aimed to experimentally determine the effect of the melt–flow portion of a single-screw- extrusion process on carbon fiber length attrition in isolation from the immediately preceding screw–plastication step that is responsible for most of the heat needed for melting. Carbon fibers with an initial length of 2 mm were stirred into 5,000 centipoise and 10,000 centipoise silicone …

Adaptive Stand Up Paddleboard, Stephen Eldridge, Claire Francis, Curtis Hodgson, Haley Rentfro, Spencer Shotts

Mechanical Engineering

The task of this project was to create an adaptive paddleboard capable of being ridden by someone who does not have full mobility in one or more of their lower extremities. This project was worked on by a team of five students - three mechanical engineers and two kinesiology students - to create an effective and robust design for the client. To do this, the team regularly met with the client and used individual and group expertise in various fields to bring the best product to the end user.

The client, Damien, was a firefighter who was injured in July …

Variable Electron Applicator, Alex Choi, Jacqueline Dulken, Gabriel Kardener, Nelson Lin

Mechanical Engineering

No abstract provided.

Automated Pintail Machine, Stephen Etheredge, Andrew Evans, Michael Fernicola

Mechanical Engineering

No abstract provided.

Cp Ev Dynamics, Steven Montevideo, Ashlie Reott, L. Carter Price

Mechanical Engineering

No abstract provided.

Improvement Of Mounting Techniques For Accelerated Wear Testing Of Artificial Heart Valves, Kyle Koon, Clay Bougher, Lawrence Yang

Mechanical Engineering

Confidential

Prosthetic Socket Cooling System, Benjamin K. Kraw, Kathy Ha, Derek Piastrelli, Cuong Lai

Mechanical Engineering

A team of four senior-level undergraduate students in the Interdisciplinary Senior Project Design course in the Engineering Department of California Polytechnic State University: San Luis Obispo have worked to develop a prosthetic socket cooling system, namely for veteran Taylor Morris and exclusively for a transfemoral prosthetic socket, under the Quality of Life+ Laboratory. This cooling system will utilize the thermoelectric effect known as the Peltier effect to transmit heat generated from the residual limb to the surrounding environment by means of forced convection over small aluminum heat sinks. Two measurement devices have also been developed to, one, measure the heat …

4th And 5th Axis Rotary Table, Dakota Bass, Ricky Riedl, Nicole Slagle, Irene Yee

Mechanical Engineering

No abstract provided.

Biomimetic Seal Flipper Test Rig, Gordon D. Belyea, Laura Kawashiri, Dylan Rinker, Kurt Beske

Mechanical Engineering

No abstract provided.

Putter Measurement System, Bryan A.L. Hofferd, Yuzo Makitani, Jacob Phillips, Eric Stubben

Mechanical Engineering

This project is provided and funded by Callaway Golf Company for the Mechanical Engineering Department as a capstone project, also known as the Senior Project series: ME 428, 429, and 430. The title of the project proposal is "Putter Measurement System" in which our team must design, build, and test a system that meets the proposed objectives as stated by Callaway Golf. The need arises from the current systems’ inability to provide detailed and consistent measurements without tedious setup and calibration.

Me 350 Air Conditioning Experiment, Joshua Baida, Ellie Hallner, Tyler Eschenbach

Mechanical Engineering

In keeping with Cal Poly's focus on physically applying the concepts learned in the classroom, our team of engineering students has compiled a laboratory experiment displaying the basic thermodynamic cycle found in air conditioning systems. This vapor compression cycle is displayed on a visualization board that features all four major components of the system: the compressor, the evaporator, the condenser, and the throttling valve. Students will take measurements of temperature and pressure at each stage in the cycle and also gauge the power draw from the compressor to gain an understanding of how performance and electricity cost come into play …

Finite Element Modeling Of Delamination Damage In Carbon Fiber Laminates Subject To Low-Velocity Impact And Comparison With Experimental Impact Tests Using Nondestructive Vibrothermography Evaluation, George Rodriguez Iv

Master's Theses

Carbon fiber reinforced composites are utilized in many design applications where high strength, low weight, and/or high stiffness are required. While composite materials can provide high strength and stiffness-to-weight ratios, they are also more complicated to analyze due to their inhomogeneous nature. One important failure mode of composite structures is delamination. This failure mode is common when composite laminates are subject to impact loading.

Various finite element methods for analyzing delamination exist. In this research, a modeling strategy based on contact tiebreak definitions in LS-DYNA^®was used. A finite element model of a low-velocity impact event was created to …

Inventory Tracking Software Improvement Project, Jacky Leung

Industrial and Manufacturing Engineering

FanimeCon’s Convention Operations department required standardized processes and controls for their inventory tracking software. On top of the current web application, new controls were put into place for checkout limitations. To allow for a continuous improvement effort, processes became standardized with a new graphical user interface where user input is recorded. These will provide processing times for further study in proposing redesigned layouts and more efficient processes.

Gold Contamination In Non-Lead Surface Mount Solder Joints, Richard Alexander Garrison

Industrial and Manufacturing Engineering

Abstract

Solder joints are critical to the reliability of circuit boards. If gold is introduced to the solder joint, brittle AuSn4 intermetallic compounds develop which affect reliability of that solder joint. To determine the effects of gold when dissolved into a non-lead solder joint, a process was developed in order to apply gold content onto SAC305 solder paste. The gold was transferred as a paste from a micropipette onto each individual solder bump. This process was designed to apply a range of gold content from 1.0 wt. % to 10 wt. % to each individual solder joint. The test board …

Smart Packing With Qr - Improving Cal Poly's Parking System For All Users, Kelsey Bazshushtari, Andrew Lee, Christopher Ragasa

Industrial and Manufacturing Engineering

Cal Poly Smart Parking, herein referred to as CPSP QR Code Initiative, is developed to reduce the wait times student, staff, and guest drivers experience when searching for a parking spot on campus. Cal Poly is currently undergoing a large growth in student population, and, as a result, is experiencing congestion in parking lots. Drivers will commonly spend frustrating amounts of time "vulturing" these parking lots for an open spot. CPSP QR Code Initiative consists of a database that is controlled by user submitted data through QR codes scanned on a user’s smartphone. This system will provide drivers with a …

Soto's True Earth Market Optimization, Hironari Fujita, Wei Lin Luong, Sean Macwilliams

Industrial and Manufacturing Engineering

Soto’s True Earth Market is a new organic market startup which is located in a historical facility in the small town of Cambria. The new owner of Soto’s Andre Ponce has a vision to create a community revolved around local organic foods and sustainability. Since Soto’s is still in the initial startup phase there is a large amount of room for optimization and redesign in order to create a solid customer foundation. Andre presented several opportunities for improvement to the team. With a time constraint of solely two quarters the project team decided to provide the following:

● Old and …

Improving The Mechanical Performance Of 3d Printed Parts Using Fused Filament Fabrication, Inderpreet Binning

Industrial and Manufacturing Engineering

The 3D printing industry has seen rapid growth in the last 10 years and has been called the next industrial revolution. There are several different processes used in 3D printing, but the most popular process is called Fused Filament Fabrication (FFF) or Fused Deposition Modeling (FDM). This is the process where (most commonly) plastic filament enters a nozzle, is heated to a semi-liquid state, and then deposited into a pattern to create a print. One major drawback to this process is that the prints are anisotropic. This means that the strength of the print varies with the orientation that it …

E-Learning Design For Microsoft Access & Asp.Net, Jonathan Choi, Christopher Hom

Industrial and Manufacturing Engineering

The problem definition is that the current video tutorial series is outdated and lacks interactive features that aid with E-Learning. The goal of the project is to create a platform that incorporates features such as structure, interaction, assessments, and competency tests. The project revolved around integrating four softwares together in order to create an effective E-Learning platform. The four softwares were Adobe Captivate, Camtasia, Microsoft Access and Microsoft Visual Studios. Adobe Captive is used to store the tutorial video and assign quizzes. Camtasia is used to record the tutorial videos. Microsoft Access is used to store all the questions given …

Facility Redesign For Increased Throughput And Improved Product Flow Of Shark Rack Products Final Assembly At Paris Precision, Karina Hromyak, Julia Remnant

Industrial and Manufacturing Engineering

Paris Precision is a metal fabrication company that fabricates metal components for various companies, one of which is Shark Rack, which creates high end server racks. Shark Rack has plans for a dramatic increase in demand over the next two years. Paris Precision’s Final Assembly area is currently not conducive to produce such a large increase in demand. A redesign of the Final Assembly facility is needed to handle the increase in production and to improve product flow through the space. The project team’s objectives are to:

● Study current Final Assembly production process

● Analyze the production flow

● …

National Society Of Sales Engineers & National Sales Engineering Competition, Joseph Lynes, Tyler Sasse

Industrial and Manufacturing Engineering

Sales Engineering is a popular career choice for many engineers coming out of university. Despite its continuing growth, many students lack the knowledge and preparation to be successful in the early years of their career. A small collection of sales engineering minors and student clubs are the only option for students interested in technical sales.

Using the DMAIC process, the senior project team went step by step to find and implement the best possible solution to better connect college students and the professional sales engineering industry . The team worked side by side with professionals in the industry and students …

Ymca Operations Manual Development, Devlin Stewart

Industrial and Manufacturing Engineering

The San Luis Obispo YMCA sports department was losing money and overworking their employees due to lack of processes and organizational issues. To address this, a plan was made with the sports director to begin organizing the sports department. This would be done by creating an operations manual for them to organize and consolidate all of their relevant information.

The project was scoped to develop a plan for the YMCA to implement an operations manual. By delivering a work breakdown structure, a gantt chart, and a plan for continuous improvement, the YMCA could use these tools to develop their operations …

Mentoring Management Database, Alexandra Cava, Samantha Kin

Industrial and Manufacturing Engineering

A new mentoring program is set to begin next year pairing children from Kindergarten through 12th grade with college students as their mentors. Keeping track of the mentor information, mentee information, pairings, stipend disbursements, interview question results, events, and final assessments by hand would be extremely difficult, therefore, a database would be a great asset to the program.

Creating a database in Microsoft Access allows a user to have all this information in one convenient location, therefore, ensuring there is a good user interface is a key component to this project. Using Perach’s "Guide to the Perplexed" as the base …

Zero Waste Campus Dining, Jenny Caudillo, Sarah Dahel, Youlen Ghazalian

Industrial and Manufacturing Engineering

Cal Poly Campus Dining has a goal of becoming a zero waste entity by providing their customers with alternative methods of disposing their trash. Their current operations produce waste, specifically their methods of packaging the food. Campus dining plans to be more sustainable by providing their customers with reusable containers. The objective of this implementation is to reduce waste produced from one-time use, disposable food containers. The success criteria for the desired system is based around the ability to track and measure the reusable containers to prevent further waste, while providing the user an accommodating environment to ensure they will …

Building A Startup Wine Brand, Sean Christopher Silvestre

Industrial and Manufacturing Engineering

Lisso Wine is a company that currently purchases wine from a California winemaker and resells it in China. In order to reach more customers and increase sales, Lisso wants to create their own brand of wine while keeping the winemaker as a supplier. However, they do not have a plan for the marketing, production, or distribution of their new product. This project will be treated as a startup venture by Lisso Wine and designed to be operated by a handful of people with limited resources. Sustainable and cost-effective materials were selected for the product and it’s packaging in order to …

Design & Analysis Of A Bicycle Towing Device, Austin Lynch, William Max Mcewan, Fredrik Stenson

Industrial and Manufacturing Engineering

A local businessman had the idea to build a device that allows a bicycle to tow another bicycle. He built a prototype to demonstrate his idea but he wanted help in developing a product that could fit more bikes, did not require a rear rack to operate, and be manufacturable at his facility. He also expressed interest in an economic evaluation of production and marketing of the device. An analysis of customer needs led to adding reduction of weight and ease of attachment to the design requirements.

This report is about improving the original design and presents the process of …

Haas Automation Umc750 5axis Mill Assembly Process Improvement, Mason A. Garcia, Gregory R. Gunion, Juan Pablo Quinonez Weston

Industrial and Manufacturing Engineering

The improvement of the current assembly of the motor and casting components for the Haas UMC-750 5-Axis vertical CNC mill includes the evaluation, development and proposal of a new pair of material handling carts. To meet these deliverables, a student team began by assessing the assembly workstation, defining the problem to be solved, researching ergonomics in material handling equipment and drafting the final design of the improved cart models using SolidWorks. The final design considered the initial improvement request from the client, as well as better ergonomic features to enhance the safety of the operators. It was estimated that the …

Automated Bearing Press, David Baker, David Brock, Engelbert Diec

Mechanical Engineering

Our group was presented with a challenge to design an automated machine to replace Micro-Vu’s current manual pressing operation. We moved, planned, and scheduled our tasks for the three quarters we will be working on this project by using a Gantt chart. In designing the machine, we generated concepts and used analysis and prototyping to select the most promising ones. Our final design uses a pneumatic press to press the parts, and it includes magazines to hold the parts before pressing, pneumatic actuators to move the parts to and from the pressing location, and a lever to separate the defective …

Transit Seating, Luke Mielke, Chris San Nicolas, Jon Rich, Sam Thompson

Mechanical Engineering

No abstract provided.

Efficiency Testing Of An Electronic Speed Controller, Grace Cowell, Matthew Hudson, Marcus Pereira

Mechanical Engineering

This project required the development of a rig that could experimentally determine the efficiency of an Electronic Speed Controller (ESC). The selected design focuses on measuring the losses due to heat from the device and comparing this to its input power. The selected design is a flow rig that utilizes the heat equation q=ṁcpΔT. The rig provides a steady state measurement of the ESC heat output by passing a known mass flow rate of air across the ESC and measuring the temperature difference. It uses a flowmeter to determine ṁ, thermocouples to determine ΔT, and a table lookup to determine …

Magnetic Bearing For Bently Nevada Rk4 Rotor Kits, Sean Fowler, Garrett Olson

Mechanical Engineering

Active Magnetic Bearings (AMB) are contact free bearings that support loads by magnetic levitation. This is accomplished by generating magnetic forces with electric current through a series of electromagnets surrounding a suspended rotor mass. Along with a set of electromagnets, an AMB assembly also consists of power amplifiers for each electromagnet, a controller, and proximity sensors. The proximity sensors provide rotor position feedback to the control system, which modulates power to the amplifiers [4]. Magnetic bearings are used in several industrial applications today, including but not limited to compressors, turbines, pumps, motors, and generators. Advantages of their utility include very …