Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Three possible design solution has been put into CAD drawings
One design solution has been made into a prototype
The prototype has been subjected to some initial testing for risk reduction
The analysis of the risk reduction tests have begun
Accomplishments from Previous Week
The initial prototype has been completed and the first tests of the device have begun.
Tests on the prototype examined the flow rate of the device with rubber bands as the source of the applied pressure.
The risk reduction presentation has been started.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Since the upcoming week is Spring Break most of the work will be indivual.
Continue adding to the design and content of the team website. - Travis
Begin the individual component analysis work. - Individual members.
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Comments are from in person meeting with Dr. Mazzei on March 15, 2012.
For the application of pressure in the device, our sponsor would like us to look into using multiple springs in series and whether or not using a torsion bar would be beneficial.
Bill liked the idea of the ladder lock that Justin had design for the safety mechanism.
He suggested we look into using a worm motor to control the device.
We need to make sure that the device does not clamp on the tubes at the bottom of the IV bag because this will disrupt the flow rate.
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Comments are from in person meeting with Dr. Delson on March 15, 2012.
We need to verfiy everything that Bill has told us about IVs so that we are well versed on the physical and medical principle behind the device.
Our springs should have a high pre-load and a low stiffness.
We should look into the spring mechanism on tape measures.
We need to examine the pros and cons of both constant torque and constant force springs
He suggested we put rubber bands on the prototype to test it out.
Other things he suggested we research: toggles and compound bows.
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
We did not receive any comments from other students this week.
Risks and Areas of Concern
Our two major risk areas are the application of pressure and the safety mechanism. If either of these fail our device becomes useless or very unsafe to operate
Right now, our areas of concern are with completing the risk reduction presentation and developing the prototypes to meet our week two goal
From our current prototype, we have learned that we will need to put more time into the development and analysis of the prototypes
Resources or Information Required but not Available
As of right now, we have the access that we need to the resources and information required to complete our current task.
Schedule
Our next milestone is to have multiple prototypes built by April 13th
The Gantt chart has been updated to include the work that has been completed this quarter and the milestones that are currently planned for next quarter.
Budget (list amount spent and amount remaining)
Spent = $0
Remaining = $1500
Progress on Report and Webpage
At the present moment, we are still working on getting all of our team members access to the website. This has caused a delay in the updating of the website. We are working on getting all of our current information and concepts added as soon as possible.
We are not currently working on a report right now.
Our risk reduction presentation is a work in progress right now and will be uploaded to the website once it has been complete.