Failure of attachment points during RTCA DO-160 Vibration Testing
Failure of attachment points during RTCA DO-160 Vibration Testing
(OP)
Hi folks,
Do you know if failure of attachment point (representative of actual installation and used to fix the equipment under testing) during Rtca DO160 Vibration testing is considered acceptable (attachment point can be replaced and testing can be resumed)or it constitutes a failure to meet DO-160 vibration test pass fail criteria? DO-160 does not contain any clarification on this aspect. I wonder to know if there are other standards thar provide guidance on this.
Thank you,
Do you know if failure of attachment point (representative of actual installation and used to fix the equipment under testing) during Rtca DO160 Vibration testing is considered acceptable (attachment point can be replaced and testing can be resumed)or it constitutes a failure to meet DO-160 vibration test pass fail criteria? DO-160 does not contain any clarification on this aspect. I wonder to know if there are other standards thar provide guidance on this.
Thank you,





RE: Failure of attachment points during RTCA DO-160 Vibration Testing
Cheers
Greg Locock
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RE: Failure of attachment points during RTCA DO-160 Vibration Testing
Generally, fixtures are typically strong enough that they should not fail during a test. As a customer I would very concerned, both about the failure, and your apparent lack of concern.
TTFN
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RE: Failure of attachment points during RTCA DO-160 Vibration Testing
RE: Failure of attachment points during RTCA DO-160 Vibration Testing
I agree with IRstuff that the failure of the attachment point is a matter of concern - however, RTCA DO-160 is applicable to equipments and not structural elements. Therefore, my concern now is to validate that equipment will pass on vibration testing - verification of the attachment points ability to withstand the loads resulting from Vibration testing can be treated separately and redesigned if needed. Do you agree? Tks
RE: Failure of attachment points during RTCA DO-160 Vibration Testing
TTFN
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RE: Failure of attachment points during RTCA DO-160 Vibration Testing
Darrell Hambley P.E.
SENTEK Engineering, LLC
RE: Failure of attachment points during RTCA DO-160 Vibration Testing
Thanks for your reply. I understand your position and fully agree with you - failure of the attachment points indicates design issues and needs to be resolved. Thanks again
RE: Failure of attachment points during RTCA DO-160 Vibration Testing
The failed item is a tie rod - even though it did not break, the soft mount at its end cracked - this was noted due to the shift on the ressonance search at the end of the testing for one axis.
Thanks,