Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Promised quote for air bladders by end of today!
Got a quote for a new mattress cover with no cotton terry, 104.85 with shipping, for TWO covers. They are pending for the "OK go" . This is an improvement from the $130 quote that we got for one unit from another vendor with no shipping. Pays to shop around!
Got a quote for the tray from one manufacturer.... a scary $2700.00
Following up with a smaller manufacturer that we like interacting with more anyway.
Completed design of tray + 3D printed locking mechanism
Selected glue for attaching the panels together
Decided to go with panel assembly for ease of manufacturing
All air pressure system design sent in for quote, valves in the process of being selected
Conducting FEA tests on all support designs in order to get proper rating for different sized patients and different angles of rest
Accomplishments from Previous Week
Based on last week's discussion with Dr. Pawlicki, the tray and foam components were all shortened to approximately 4.5' to support just the patient's upper body. As stated before, this was done to minimize the overall weight of the system and reduce the bulk that the technician must move on and off the existing table. The tray itself was simplified to be created out of 5 flat panels such that it would be easier for the manufacturer to produce and cheaper to ship. Furthermore, a vendor has been found who is able to produce the air pocket system at the dimensions we need.
Also found a vendor for custom mattress cover with NO cotton terry on surface, as per Dr. Pawlicki's advising. We found an all urethane replacement.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Get quote from tray vendor by tue or wed (Daniel)
Implement a 3D printed piece that will allow the technician to simply place the table down and have it be secured in the existing half-moons on the radiotherapy table (Daniel&Sanil).
Create adjustable securement system to allow the same system to be used in both the radiotherapy suite and CT scanning suite (sanil, adjust cad for tray).
Purchase parts for air pressure control system as per air bladder manufacturer's advising (Johnathan)
Order tray on friday after Pawlicki validate design (all)
order air bladders on friday following Pawlicki vaidation and quote review (all)
Order Mattres covers on friday following Pawlicki validation and quote review (all).
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
4/18/19
Apparatus may overhang from table so adjust for that, make sure lip is not too tall such that shoulder won't come into contact
Distance marker for adjusting head support for different patients
Use waterproof foam liner
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
4/16/19 - add more engineering analysis and actual numbers to all the research we've done, focus on what we don't know, show new 3D printed locking mechanism next meeting
Actions: performed FEA on tray, choosing material for enough cycles in air bladders, chose strong enough glue to withstand weight of foam
Risks and Areas of Concern
Effectiveness of 3D printed locking mechanism and adjustability
Strength of carbon fiber tray once glued together, using L brackets and sanding down resin on finished surface in order to use epoxy to put tray together
Fittings with tubing attached
Schedule
Gantt chart updated
Budget (list amount spent and amount remaining)
Only spent on foam, $6600 is amount available waiting on more quotes.
Progress on Report and Webpage
Impact on Society Completed and uploaded, website under construction but most pertinent sections are complete