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Notch Weld Filled

Notch Weld Filled

Notch Weld Filled


There is an improper hole inserted in a weld line that joins two Ti plates (tension+bending loaded). This hole is also partially inserted in one plate creating a kind of semicircular notch at the edge.
Repair proposal is to weld fill the hole by fusioning same base material, then stress relief.

From my standpoint I really don't like that condition. I'm not an expert in weld analysis but despite of the area was stress relieved I think that notch will create any kind of geometrical stress raisers (besides the weld offset factor) due to the new weld shape:
- WAS a weld continuous line.
- WILL BE a weld line with a kind of bump that is filling the improper hole.

I'll really appreciate your comments.


RE: Notch Weld Filled

I would guess that you will have a stress riser whether the hole is filled or not due to the discontinuity of the gap in the weld or the heat imposed by filling it. Does it really need to be filled for strength or sealing purposes? If not, I would just leave it as is. How would you stress relieve it?

RE: Notch Weld Filled

It is not necessarily wrong, and it might be adequate for the purpose; but have a weld engineer/metallurgist analyze it. Or reject the part pending weld analysis. What is the cost of the failure, the cost of rework (rejection), the cost and delays of rejection and the cost of subsequent repair, the cost of analysis - which may reject the part anyway?

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