Originally Posted by ElectroVlasic
I thought option 4) was
- Update your software model using the data you gathered while breaking the wing
- Now that you have a good model, replace the part that broke with one that will not break based on the model
- Re-run the model and prove the part won't break
- Ask FAA/JAA to sign off on the test
I also have lots of experience in certification and failed test items and would offer the more likely path as:
- Update your software model using data gathered just before the wing broke
- Now show that the model was misapplied to the end conditions (the exterior cells to your FEM) ala the points of loads including pull wires, weights etc.
- recalibrate your model by adjusting these end conditions until the model now predicts a margin beyond where the initial demo test failed
- convince the authorities JAA etc. that the initial loading condition was misapplied and that since you are now so finely callibrated via the intial results up to the failure condition that it's a waste of time and money just to repeat the test and scrap another wing under overload.
BTDT