Quote:
Originally Posted by Shankenstein
FMEA squad up!
Even when threads are "helped" with a glass bead blast, hardening, or heat treatment... there's always stress concentration due to shape. Many times, you've got residual stresses too.
Fatigue testing will find the weak point and initiate a crack. At this point, the crack is its own stress concentration. The material's toughness dictates how much concentration... and it's just a matter of cycles before the part is #rekt.
Thanks for posting the news publicly. There is no failure in R&D... we follow the cycle:
test --> anomaly --> problem definition --> root cause --> corrective action --> re-test
It's only a failure once you've put it in the field, and it seems like you guys are going the extra mile to ensure customer satisfaction.  |
Thanks for the words of encouragement. I was personally fairly upset as I'm the main person working on this project. When I put it in context though, it really didn't do that bad and would have lasted a few seasons under severe race conditions. We are dealing with a street car though and we want even more longevity built in.
I should also point out we are testing this at around 4 degrees of negative camber. This is to stress it in the absolute worst case we can.
Quote:
Originally Posted by Calum
Pics or it didn't happen!! I want to see those results, please.
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Since we need to prove that it broke.
