Abstract
With the increased emphasis on process and power plant noise control in recent years, various noise abatement techniques have been developed by theory and experiment. Among these has been the use of acoustical materials for wrapping or lagging noisy piping and equipment. Several prediction theories have been reported over the past few years to allow for the selection a priori of pipe lagging material dimensions and properties in order to reach predetermined noise reduction goals. A comparison of these prediction methods is undertaken using a variety of material dimensions and properties. These results are then compared with experimental data taken under controlled and consistent conditions. Practical advantages and deficiencies in the prediction methods are discussed.
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