Cup Seals To Coding

Its been while without posting but work was still the order of the day. Soon after completion of hospital visits, more research on our project was done.  We had to understand the properties of the material that we were to use  for producing the compressor cup seal. The material is called the PTFE and its a self lubricating material.  We thereafter  had to come up with CAD drawing to use for laser cutting. At our disposal, we had three types of the PTFE material but we worked only with two. The difference mainly is the infill.  Cup seals then had to be tested to compare the performance  and the rate of wearing of the two materials.


The testing of cup seals required us to collect pressure readings for a period of 3 days. why pressure? its because the  function of cup seals  is to prevent air leakages during compression in the compressor. low air pressure than the recommended range of 10 to 30 psi would mean something is wrong with the compression process; more likely air leakages in the cylinder.  Collection of this data had to be done as often as every minute.   pressure analyse was not an option hence we had to come up with an Arduion data logger.   This was another interesting part of the project as we had to learn more coding and pressure sensors.

We tested one material so far (white one) and it turns out to wear out more rapidly than we imagined. Now looking forward to see the results of the green material which is under testing.

2 weeks down the line

The journey of six weeks internship started with lot of fun. the first week we got introduced to our fellow interns from Rice University. What amazing team they are.  we had a chart from which we had to learn each other first thereby creating an open and exciting environment for working. we were then introduced to the process of engineering design and worked on basics of  arduion  and soldering. we were also introduced to the machines available in the Polytechnic studio such as laser cutter, 3-D printer and C.N.C. Afterwards, we were introduced to the machines that are available in the hospitals and how they function. The week ended by assignment of teams with various projects  and i was teamed up with Naod Araya to work on project that aim at production of  compressor cup seal ( for O2    machines).

 

The second week was all about travelling to various hospitals. we visited four hospitals; Q.E.C.H, Thyolo , Mulanje, Chiradzulu and Zomba Central Hospital.  The trips were aimed at finding out more about the projects we are to work on for the remaining 4 weeks and appreciate their importance. Information was gathered by questioning the nurses and biomedical technicians from all the hospitals. there is so much desired indeed but the trips were so successful and looking forward to start  working the gathered information

It was not work throughout. we had a lot of fun. in the first week Saturday, we had a birthday party of one of Poly interns at our place(poly hostels). Second weak on Friday, the Rice interns invited us to their place and throw us a party where they also  cooked for us various American foods.  During our trips we had to stop by different scenic beauty places such as  Chawe  inn, Hapuwan and thyolo tea plantations to appreciate the nature and take some pictures