Table of Contents
Functional DecompositionThe functional decomposition for the project can be found here: Functional Decomposition
Concept DevelopmentConcept Generation
The concept generation shows different concepts we identified for the selection of the foam.
The test rig concept selection shows different ideas and approaches towards building a test rig.
Different designs created for the test rig are considered here: Test Rig Designs
We have not fully selected one concept and will not choose one until drop testing and prototyping as well as CAD simulation models have been created. You will find the Pugh Analysis with different selection criteria which helped us narrow down a few concepts to test and use.
Systems ArchitectureOur proposed system design can be found here: Systems Architecture
This is an overview of what the process will look like and what functions the foam and the drop test rig must perform.
Feasibility AnalysisWe have narrowed down four important feasibility analyses to perform.
1. What will the helmet need to withstand for G-forces upon impact in order to protect players from concussions?
2. How many impacts will the padding have to be reliable/durable for? How many seasons must it be able to last before needing to be replaced?
3. Can we design a test rig that matches the specifications of standard testing equipment that is repeatable, and will allow us to test different impact scenarios?
4. Approximately how much will a prototype cost?
Risk AssessmentRisk Assessment
We came up with 23 different risks that could occur during the project and plans of action in case any of these risks actually happen.
Systems Design Review
- Pre-read: This was sent out to our guide and customer prior to presenting the System Design Review.
- Presentation: Systems Design Review
- Notes from review:
Engineering Requirements Slide:
- Repeatability: Denis recommended that instead of it being binary...it could be numerically quantified. Perhaps using standard deviation.
-System Architecture Slide:
- Will salt water degrade foam material? Denis recommended that this could serve as an output.
- Instead of Adhesive Failure reword it as Attachment Failure
- Make sure it accounts for problems that will occur during the project.
All of the notes from the review have been addressed and updated.
- Action Items:
Things that we need to experiment with:
1. Importing the 3D scan into solid works
2. Positioning the head scan in to the helmet in solid works. -It was suggested that reference points could be used to help with this. We will have to develop an easy way to do this because it will eventually become part of our work flow.
3. Creating CAD models of the different geometries we want to test and perform virtual testing to save time and materials.
4. Deciding what to use as the test dummy head inside the helmet.
Week 9 ReviewThe PowerPoint from the Week 9 review can be found here: Week 9 Presentation
Expert AdviceMeeting with Joe Abraham from the materials testing lab comments are found here:
Meeting with Chris Pietrzak from brg sports notes are found here: BRG Sports Notes
Meeting with Rachel Silvestrini for experimental design advice notes are found here: Rachel Silvestrini Notes
Meeting with patent attorney for patent advice notes are found here: Patent Attorney Notes