Many equipment chassis ring, buzz and/or rattle. Chassis ringing can be especially perceptual. A light rap of a pencil eraser tip on the chassis, or even a hand clap near it will allow this unwanted vibration to be heard. You can stop this by applying our constrained-layer damping strip to the inside of the chassis lid.
Not only does it create airborne energy, but it can transfer mechanical vibrations to electronic components, as well as electrical contacts on the PC board, and/or chassis.
Chassis lids have natural resonant frequency modes like plates. Plates have modes which are not harmonically related to the fundamental mode, and these over-tones are typically much higher than the fundamental. They can vibrate in both clamped and free edge conditions.
Demonstration of Mechanical damping and Electrical shielding benefits (Electrical 40Hz.-100kHz. and Radio 600MHz.-6GHz. from a typical AC extension cord).
Internal Chassis Damping are available in 2" and 4" widths x 12" long
Test Report is coming soon!