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Old 02-24-2011, 08:24 PM   #31
Marin
Scraping Paint
 
City: -
Join Date: Oct 2007
Posts: 13,745
RE: Help me out here....

Quote:
Baker wrote:


There is plenty of good metal left in the strut...again the reason for this haul.
I certainly don't understand all the potential issues at work here, but I believe the reason that bronze turns pink in these situations is because the copper is being leached out of the bronze.* This weakens the bronze.* What I don't know is how deep the leaching goes or how fast.

So unless you know or have been assured of this already, it might be worth trying to find out not how much metal is left but how strong*that metal really is.*Is there a risk that the strut has been weakened--- even though it looks as substantial as it ever has--- to the point where the stress of the loads and vibration it's subjected to could cause it to fail?

I have no idea if there is any sort of test for this, like magnaflux (which I assume doesn't work on bronze), acoustic frequency*testing or whatever.
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