Calculating required bend strength
Posted 19 March 2009 - 07:26 PM
Posted 19 March 2009 - 08:52 PM
you're showing 7/16 clear on the inside pf your form. Is that the thickness of the strap?
I don't have a reference in front of me but you should look for tables of plate thickness versus minimum bend radius. You're really after the outside fiber strain (which is related to stress by E) to make sure you don't crack the outside radius surface.
Hope this helps some.
Posted 19 March 2009 - 09:09 PM
This jig is what they use to typically perform root, side, and face bends for a destructive weld test. They cut a section transverse to the weld joint approximately an inch wide. They'll bend a given number of them in these fixtures after etching, and any tears in the weld metal or heat affected zone are then assessed for accept/reject criteria. That jig is based on ASTM standards. Why he needs to actually determine the bending force required is a little beyond me, as it's typically a "medium sized bottle jack" kind of engineering when we're in the field...
Posted 19 March 2009 - 09:21 PM
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