Brash Failure...was "Dead Wood"

Joseph Garrett joegarrett at earthlink.net
Thu Aug 17 15:40:00 MDT 2006


Terry said: "Yes, I am familiar with the term. It's been a while since my undergraduate forestry courses. If I'm not mistaken it describes a break that occurs with little bending because of pre-existing damage. Like if a wooden airplane wing breaks off suddenly and unexpectedly, and examination suggests pre-existing older partial breaks in the wood in the damaged area, it might be referred to as a brash failure.

So how does "brash failure" relate to wood loosing it's elasticity and dying? What's that all about?"

Terry,
The best way I can explain it is with an experiment. Take a fairly new, (wood), hammer shank and break it. Now, take a really olde, (as in 100+), and break it. The olde one will break with little or no splintering. Almost like it was cut off, instead of broken. The new shank will have splinters all over the place. This is an example of Brash Failure. And, that is where the wood has lost a major amount of it's cellular bond and elasticity. K? Even attempting to glue repair the olde wood is an exercise in futility, in my experience.
Regards,


Joseph Garrett, R.P.T.
Captain, Tool Police
Squares R I
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