Date of Award

2022

Degree Type

Capstone Project

Abstract

Team 26 was tasked with designing, developing and building a test fixture to measure impact loading incorporating an isolation mount. To start this project the team first had to gather a lot of research about the subject as the group members have only had one challenging class relating to the subject of dynamic properties; this class was System Dynamics. Through many hours of research including a literature and patent search the group was able to comfortably gauge the scope of the problem definition as well as the relative verbiage and vocabulary of the world of isolation mounts, impact testing and accelerometers. After the group felt confident about the previous work, a generation of 90 concepts (30 concepts each) were drawn out. These concepts were then put through a rigorous Quality Function Deployment comparison which in the end yielded the teams top 3 concepts. However after meeting with our sponsors and professors the design had to be altered in order to fully fulfill the requirements of the project. This design will be described below.

The design in this report utilized gravity as its main source of power to deliver a force to the isolation mount. A variable large mass is dropped from a set height which lands on a heavy duty lever; this lever looks very similar to a teeter totter. When this lever is struck on one side, the opposite side will rise and impact the hanging mass which has an isolation mount and base plate screwed into it. Throughout this process two accelerometers will be set up at various points along the apparatus including the hanging mass as well as the dropped mass. As this design came through it was realized that the lever would need some sort of split/spring mechanism to only strike the hanging mass once and not hold it after impact. This design can be seen in detail further into this report.

This design will be able to strike various isolation mounts at different impact loads for a variety of data. Through many 3D renderings, several meetings and a countless amount of hours spent assembling and testing, the team is proud to present the design solution to Raytheon Technologies.

Comments

Team Name: Team 26, Ramming with Raytheon

Sponsor: Raytheon Technologies

Sponsor Representatives: Dr. Tony Rafanelli, P.E., Fred Burke, Tom Thiesing

Document Reference: URI-MCE-402-26-2022

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