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[Shop-talk] torque wrench calilbration

Subject: [Shop-talk] torque wrench calilbration
From: bjshov8 at tx.rr.com (BJNoSHOV8)
Date: Sun, 06 Mar 2011 19:11:47 -0600
References: <20110305092342.S7WCZ.4560638.root@mp16> <4D7411C5.5050104@tx.rr.com> <239701cbdc5e$a7e4fe30$0301a8c0@randall>
E is a function of the metallurgy.  E for steel and steel alloys is in a 
fairly narrow range.
I is a function of the shape of the "beam", and is actually the property 
that could change, through wear, corrosion, damage, etc.


>> After
>> all, PL^3/3EI is the same now as it has ever been.
> Only if E is a constant.  I suppose changes in E would come under the
> category of either not manufactured properly or damaged; and yet the only
> way to tell may be to check the calibration.

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