Understanding damping techniques.

Effective control of noise and vibration, whatever the application, usually requires several techniques, each of which contributes to a quieter environment. For most applications, noise and vibration can be controlled using four methods: (1) absorption (2) use of barriers and encloseures (3) structural damping and (4) vibration isolation. Although there is a certain degree of overlap in these classes, each method may yield a significant reduction in vibration and noise by proper analysis of the problem and application of the technique. The principles behind the use of absorption materials and heavy mass barrier layers are generally understood.

 

Conclusion The bottom line in noise and vibration control, as in virtually all other engineering efforts, is cost-effectiveness, which translates into achieving workable, inexpensive solutions to complex problems. Maximum advantages of reducing noise and vibration at the source can be realized by careful planning, thoughtful design, and proper choice of materials and structures specifically engineered for the task. This technological state of the art in damping materials and systems is such that it is possible to design products that operate more quietly, with less vibration and greater precision, without being necessarily more expensive or difficult to build.