Delwin D Fandrich wrote: > ----- Original Message ----- > From: "Richard Brekne" <Richard.Brekne@grieg.uib.no> > To: "Pianotech" <pianotech@ptg.org> > Sent: August 28, 2003 2:11 PM > Subject: Re: Compression Question > > > > > Its like you can > > hypothetically speaking squezze the thing down next to nothing and it > will > > still shrink that 1-1.5 % given a drop 8 % drop in EMC. > > No, it's not like that at all. There are physical limits to everything. > Long before you squeeze the thing down to next to nothing you will > have...well, next to nothing. You certainly won't have anything remotely > still resembling wood. > Well.. yes.. of course.. but then I was speaking hypothetically again... > > The compression ridges that develop in some soundboards are the result of > the wood fibers in that part of the panel (specifically in the earlywood > portion of the annular rings) being squeezed beyond their physical limits. > They compress without catastrophic failure up to the point of their elastic > limit, then structurally fail. That part of the panel, then, no longer > follows the normal rules of expansion (or compression) and contraction (or > tension). > > Del > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html http://www.hf.uib.no/grieg/personer/cv_RB.html
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