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Actually, based political leanings, Washington, Oregon, and California might
be thought of as Baja Canada.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bev Christian
Sent: Wednesday, August 29, 2007 11:07 AM
To: [log in to unmask]
Subject: Re: [TN] PCB matl properties - water effect NTC
Denny,
As long as the US military does not want to know about "wet" Vancouver and
"dry" Alberta Badlands. Contrary to what Dave Hillman says, we are still
not the fifty-first state.
Bev
RIM
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dennis Fritz
Sent: Wednesday, August 29, 2007 10:01 AM
To: [log in to unmask]
Subject: Re: [TN] PCB matl properties - water effect
In a message dated 8/29/2007 2:23:11 A.M. Eastern Daylight Time,
[log in to unmask] writes:
Hi Leo,
I have some data about hydrolysis for a glassfiber reinforced PWB type that
is similar to FR-4. Two diagrams on tensile modulus and tensile strength
vs. immersion in stem and water vs time up to 1,000 hs. Can send offline if
you are interested.
Inge
I have the same interest - physical properties of laminate with changes in
humidity. My interest is in vibration performance of military boards, and
we have determined that laminate stiffness definitely plays a role.
However, we
would also like to know if "wet - Somalia" versus "dry - Saudi Arabia"
locations also affects vibration performance. Thanks in advanced.
Dennis Fritz
SAIC, Inc (Crane Naval Weapons Depot - Indiana).
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