College - Author 1

College of Engineering

Department - Author 1

Mechanical Engineering Department

Degree Name - Author 1

BS in Mechanical Engineering

College - Author 2

College of Engineering

Department - Author 2

Mechanical Engineering Department

Degree - Author 2

BS in Mechanical Engineering

College - Author 3

College of Engineering

Department - Author 3

Mechanical Engineering Department

Degree - Author 3

BS in Mechanical Engineering

College - Author 4

College of Engineering

Department - Author 4

Mechanical Engineering Department

Degree - Author 4

BS in Mechanical Engineering

Date

11-2020

Primary Advisor

Lee McFarland, College of Engineering, Mechanical Engineering Department

Abstract/Summary

The purpose of this report is to document the Senior Project that has been laid out by Bellevue-Santa Fe Charter School, assigned to Team W45, or “Experiment 626.” The school’s SciTechatorium is a classroom of displays relating to STEM subjects and the challenge presented to the Cal Poly team of mechanical engineers was to design and build a new, exciting exhibit that would be added to the SciTechatorium. The display should be engaging to children, educational in demonstrating a STEM concept, and be durable enough to withstand excessive use by children. The Scope of Work summarized in Sections 1-3 presents the introduction to the project, background information gathered, and objectives of the final product. In the Preliminary Design Review, the team decided on showcasing earthquake concepts through a shake table, where students would create and then topple structures. As the team moved into the Critical Design Review, several key decisions had been made. The team decided that the shake table would incorporate two degrees of freedom (DOFs), the vertical axis and the horizontal axis. These axes of motion are independent of one another, and in conjunction can produce a waveform of motion, which is more accurate to how actual earthquakes function than a single DOF shake table. The team had met some challenges due to the COVID-19 pandemic, namely in communicating with each other, securing funding, and sourcing parts. At the time of the CDR writing, the team planned to go ahead with the manufacturing of the verification prototype. At this stage, funding for a budget of $2000.00 was secured through both Bellevue-Santa Fe Charter School and Cal Poly. Moving into Fall Quarter, the team divided the main portions of the work into two teams: Kellen Fujishin and Alysson Loo handled all documentation, visual exposition, and otherwise virtual deliverables, and Joshua Clemens and Samara Van Blaricom handled the physical manufacturing of the prototype. The original design changed very little, with the cams requiring slight modification and additional springs being added, and manufacturing was completed at the end of Week 10 after the Senior Project Expo. At the time of this writing, the completed project will be delivered to Bellevue-Santa Fe Charter School on December 3, 2020, which is the optimal time for both team and sponsor.

SP45_DRAWING_PACKET.pdf (4063 kB)
Drawings of senior project for reference

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