156B Week 2

Current Status - We have set up the testing environment for a supine position.

During last week, we have encountered a problem when having dollies under the chamber. The gym mat didn't stay stationary and kept moving. As a solution, we placed dollies under the gym mats and have a stationary chamber. This solved the problem and it was more comfortable as well. Also, we have replaced the current waistband seal with a new seal. A new seal stretches from lower stomach to hips and prevents the leakage for a long time.

Goals for Next Week.

• Mounting Rings - Our team will visit the lab on Tuesday to mount the rings and try to make it not twist.

• Reinforcement Test - We will reinforce the chamber by adding metal rings to it. We will start with adding 1 ring and will continuously add them until the collapse issue is solved.

Sponsor Comments from Last Meeting (01/12/21).

• New Seal - With a new seal, the negative pressure device maintained negative pressure of 18-20 mmHg for a long period of time

Instructor Comments from Last Meeting (01/14/21).

• Presentation Clarity

  1. 1. Use bigger, quality figures and cut the word down.

     2. Figures are preferred over pictures and add more annotations to them.

• Consider using stronger spring to replace the current wire.

Risks and Areas of Concern

• Need sort of solution to prevent rings from twisting and keep them parallel.

Budget

Remaining Balance: $2368.19