Week 6

Coming into week 6, we had created a plan for the testing of our CAD model. As we are limited to only being able to print 5 parts, at a reduced scale, we decided to test the parts that we were planning on printing: the filter assembly.

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The above image is a render of our filter assembly. After finalizing our assembly, we performed several stress tests on each component of the filter assembly. We were testing to ensure that the components would meet some minimum safety requirements, as we didn't want the assembly to break under stress.

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The most vulnerable area is where the filter attaches to the mask. Stress will normally be applied around the edge of the mask, and due to the shape of the joint at the gasket, a lot of stress gets applied at this point. To fix this problem, we added a fillet around the base of the extrusion you see at the top. This allowed for the stress to be spread out more, and increased the safety factor of the part as a whole.

At the conclusion of our stress tests, we determined that this assembly would be able to handle the stress it will be under easily, and we have no worries that the filter assembly might break under stress while in use.

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At the conclusion of week 6, we continued planning for week 7. Week 7 brings some unique challenges, such as printing the filter assembly. Our plan is to upload each component of the filter assembly into Ultimaker Cura, and prepare it for 3D printing.

Thanks for following our project!

-ENGR113S Team 8