Crack in an Angle Corner
Crack in an Angle Corner
(OP)
I've got an angle member (4x4x3/8) that has two fitted stiffeners (shop welded) in it. The angle is 12" long. The angle is used to provide force continuity between members subject to either tension or compression. See the sketch.
I called for each angle leg to be welded, three sides.
The angle is in place. Now, the testing service has called me and said that a couple of the angles have a crack in the corner of the angle.
The calculated loads are nowhere close to the amount of weld I have on the angle.
Could this be a case where the angle underwent thermal changes when being welded and cracked the corner? Its been in the 30's in terms of temperature here lately.
I'm baffled as to why the angle would crack.






RE: Crack in an Angle Corner
The greatest trick that bond stress ever pulled was convincing the world it didn't exist.
RE: Crack in an Angle Corner
The stiffeners are fitted stiffeners. I would say there probably is weld in the "k" area.
What are you thinking?
RE: Crack in an Angle Corner
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RE: Crack in an Angle Corner
I've stiffened angles before without any issue.
They've only been in place a few weeks, so I know it's not fatigue.
It has to be forces developed during welding of the stiffeners, or, internal forces developed when the stiffened angle had its legs welded on all three sides.
I've searched everywhere and can not find any literature about why not to do this.
RE: Crack in an Angle Corner
Have the angle cross-sectioned and polished through the crack and you will likely see the problem.