I posted a newsletter at:
http://www.vibrationdata.com/Newsletters/March2012_NL.pdf
The topics are:
James Webb Space Telescope Isolation
The Prandtl-Glauert Singularity
Seneca Guns
Loudest Stadium Crowd
Please also see my profile at:
http://www.nasa.gov/offices/nesc/academy/Tom_Irvine_bio.html
Tom Irvine
Greetings Tom,
Please enlighten me in regards to the strut outer layer, constraint layer (news letter pg. 6). I am not familiar with its origin and applicability.
-Pedro