Method for proof load testing of nuts
Method for proof load testing of nuts
(OP)
I've just seen the use of an hydraulic press to perform
the required Proof Load tests of nuts (i.e., A-194,
A-563 etc.). If the cross-head speed, pressure (lbf),
time under pressure etc. are accurately measured (and
traceable to NIST etc.) and all other test parameters
meet A-370/F-606, is this method acceptable for
complying with & certifying items as meeting the
A-194/A-563 Material Specs?
If not, what paragraph(s) in the specification is
this method in violation of?
the required Proof Load tests of nuts (i.e., A-194,
A-563 etc.). If the cross-head speed, pressure (lbf),
time under pressure etc. are accurately measured (and
traceable to NIST etc.) and all other test parameters
meet A-370/F-606, is this method acceptable for
complying with & certifying items as meeting the
A-194/A-563 Material Specs?
If not, what paragraph(s) in the specification is
this method in violation of?





RE: Method for proof load testing of nuts
http://www.welding-advisers.com/
RE: Method for proof load testing of nuts
RE: Method for proof load testing of nuts
The method of load application doesn't matter as long as the loads and load profiles are within specs. Fixturing needs to meet the requirements of the spec (you can buy the mandrels from Greenslade & Co.) and you load and displacement measuring cells need tracability to a certified calibration.
Dick