Table of Contents
The System Design PhaseThe systems design phase is where our team developed our initial concepts for design & evaluated their respective functionality, feasibility, risks, and more. The items below highlight our work throughout this 3 week cycle.
To see every document associated with our Systems Design Phase, please see our Systems Level Design Documents directory.
See a link to our word document of our functional decomposition here
BenchmarkingAs planned and mentioned during the problem definition phase, additional existing models of heart pumps were researched and observed.
Below are photos of some models observed (special thanks to Dr. Mix of University of Rochester, and Dr. Steven Day or RIT):
|Dr. Mix Heart Model|
|Dr. Day Heart Model|
Viewing these various models provided great insight to our team. Seeing how current models work allowed us to think of several concepts and brainstorm new ideas based off of what we now know is physically possible to create.
To view all photos from our existing model visits, see our Photo Gallery
Based off of our research, we created a pugh graph of existing models to help create a datum for use during our own concept selection.
See our link to both .xlsx Pugh Charts
Concept Development & Morphological Chart
Purpose: Generate new concept options or combinations that can potentially exceed the benchmark concepts
See a link to the spreadsheet documenting our concept development for each function
To pick one final, complete concept, our team had to decide on a list of selection criteria. We then looked at that generated list of criteria compared to our various concepts we generated.
|Selection Criteria||Generated Concepts|
Finally, a Pugh chart was created based off of these two aspects, allowing us to rate each functions solution compared to the benchmark datum, Dr. Day's model. Ultimately, it was determined that concept 2 was the best choice, as outlined in the final Pugh chart below:
See our link to our .xlsx Pugh
See photos of all 4 concepts in our Systems Level Design Documents repository.
Second revision of System Architecture. This visual aid indicates where structure, material, energy, and information all flow through our design to satisfy the needs of this project.
Feasibility: Prototyping, Analysis, Simulation
Feasibility Analysis was conducted on various valve options that will be explored. This is an important step in the development of design as valves play an important role in all our concepts
Preliminary engineering analysis of our the heart's cardiac output. This is essentially what the final design will imitate
At the end of the Systems Level Design Phase, many more risks became apparent and were updated accordingly. Our initial draft of risk management was updated from the Problem Definition Phase, and you can see this in the snapshot of our risk management below:
Second draft of risk analysis, highlighting severity and likelihood. This allowed a numerical ranking to be assigned to each risk that is expected to be encountered at some point in MSD I & II.
See our live document here.
Design Review Materials
See our SLDR Presentation Powerepoint here
Plans for next phase
The plan for the next phase is outlined in the Gantt Chart below: