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Re: Fatigue and Bowling Pins

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Maybe it comes from the old days when pins were made of wood?  If so the material would be bruised from the ball impacts, and if you take a pin out of service for a while, if the dents have not overstressed the wood fibre, it may "relax" back into its correct shape?
 
$0.02

Thor A Tandy P.Eng
Victoria BC
Canada
e-mail: vicpeng(--nospam--at)sprint.ca
----- Original Message -----
Sent: Wednesday, January 09, 2002 1:48 PM
Subject: Re: Fatigue and Bowling Pins

If this is so, I would assume that the material that the pin is made of has some sort of healing property that would fuse the cracks.  I can't wait to hear the thoughts on this one!
Ken

Kenneth S. Peoples, P. E.
Lehigh Valley Technical Associates
1584 Weaversville Road
Northampton, PA 18067-9039
Phone: (610) 262-6345
Fax: (610) 262-8188
e-mail: kpeoples(--nospam--at)lvta.net

----- Original Message -----
From: "Balmer James" <James.Balmer(--nospam--at)rsandh.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Wednesday, January 09, 2002 1:49 PM
Subject: Fatigue and Bowling Pins


> I recently heard that bowling pins are routinely taken out of service for a few weeks to extend their service life.  I confirmed this by calling a few local alleys.  For a pin left in continuous service, service life is X weeks.  For a pin that is routinely removed from service, service life is C*X weeks.  Where C is greater than one and the service life ignores the "rest" periods.
>
> Is this a old wives tale created by a bowling pin salesman or is there a reasonable explanation for this?
>
> James