Hi,
I know that this subject has been broached in previous posts, but I am looking for something more specific.
Due to corrosion in the skin of a Boeing a/c, a blend out (from 0.071" to 0.068") was performed at joint locations. This means that the skin and NAS1097K fastener heads were shaved down by 0.003". The DER is requesting a calculation showing the reduction in the static joint allowable due to the head of the rivet being shaved down. I know of 2 sources that have such a calc-both HSB references from my time working for Airbus:
My question: are there any similar methods in the public domain (or of American origin) that would yield the static joint reduction for shaved head NAS1097 rivets?
I know that this subject has been broached in previous posts, but I am looking for something more specific.
Due to corrosion in the skin of a Boeing a/c, a blend out (from 0.071" to 0.068") was performed at joint locations. This means that the skin and NAS1097K fastener heads were shaved down by 0.003". The DER is requesting a calculation showing the reduction in the static joint allowable due to the head of the rivet being shaved down. I know of 2 sources that have such a calc-both HSB references from my time working for Airbus:
- HSB 21020 calculates the head and shank Ultimate static allowables,
- HSB 21025 provides a method to determine fastener joint strength allowable in case a fastener head becomes un-flushed after a rework (blend out) without adjustment of the countersink.
My question: are there any similar methods in the public domain (or of American origin) that would yield the static joint reduction for shaved head NAS1097 rivets?
