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Below is Mane Magic's Failure Modes and Effects Analysis Worksheet. We performed two tests with our proof-of-concept prototype: A drop test to analyse the stability of the components simulating a user accidentally dropping the device and a leakage test to observe leakage when stored.
Test 1: Drop Test
Procedure - The proof-of-concept prototype was dropped from a height of 5 feet, simulating the scenario of a user accidentally dropping the device while using it.
1. Drop test.movResult: The roller balls and their casings got detached from the reservoir, indicating that their fit must be more intact. The roller ball-casing fit remained in place and the other parts such as the outer casing and handle made through the test without damage.
Test 2: Test for Leakage
Procedure - The reservoir was filled with 20 ml oil and set aside on a paper towel. Every hour, the towel was inspected to observe leak from the device.
1 hour
2 hours
3 hours
4 hours
Result: There is leak primarily from the gap between the reservoir tubes and the roller ball casings. This would be fixed if there were a tighter fit between the two. There is also a slight leak through the roller balls which need to be prevented by altering the size of the roller balls and the casings. From the test, we also observed that certain tubes leak more than others as seen from the paper towel images where there is more leak on the left.
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