Team FeraFree has two main sub-groups, one for the mechanical portion of the prototype and another for the electrical and software portion. The mechanical group (consisting of Nick, Eric, and Diana) spent this week generating concepts for the grease testing apparatus as well as finalizing prototype dimensions and determining where internal components will rest. We found that the replica bearing rollers don’t rotate easily with manual rotation of the inner race, and so we may have to load it to induce enough friction to lead to roller rotation. See pictured below Nick helping to generate concepts for how we’ll build the support and loading apparatus to test the passive fill system.
The electrical/software group continued testing the TMR sensor, the progress on which has now been divided into two avenues, DC & AC circuits respectively. Minh managed to acquire a measurable signal at 6k PPM ferrous debris concentration with the DC circuit. Maddie and Will put in time programming our microcontroller. Finally, we purchased an additional TMR sensor so that we can pursue DC & AC testing routes in parallel.
















