Science Buddies: The Unconstrained Truth About Constrained Layer Damping

This science fair project shows you how to transform a noisy piece of metal into a sound-muffling constrained-layer damper. You will record the sound of a controlled impact on a piece of metal with a microphone, a computer, and some free software. Then you will create a constrained layer to muffle the sound. You are only limited by your imagination, so try this science fair project to dampen the din.