hans.hedal at post.cybercity.dk
Tue Jun 11 09:47:17 CDT 2019
Steven S. wrote:
> this guy ... talks about contrained layer damping later in the video.
Sony originally had a (now expired) patent on "Constrained layer damped
"The front baffle board comprises an interior substrate, an exterior
substrate, and a constrained layer damping material sandwiched between
and bonded to the two substrates. The constrained layer damping material
comprises an energy absorbing thermoplastic alloy having a very high
material loss factor. The other walls of the enclosure also comprise an
interior substrate and an exterior substrate with a constrained layer
damping material sandwiched therebetween."
[I believe "TECH INGREDIENTS" have read this patent (or similar) before
making the video.]
The patent text (which could supplement the video) gives a description
of the problems, and how they were solved practically:
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