RADIATION EFFICIENCIES OF BEAMS IN FLEXURAL VIBRATION

To reduce the noise from any complex noise source, it is important to locate the highly radiating component in that noise source. At present there are many techniques in use for this purpose. Among these, the radiation efficiency method now receives most attention. To use this method one is required to know the radiation efficiency of each component in a noise source. In this paper simplified equations (similar to those in use to calculate the radiation efficiencies of plates) are given to estimate the radiation efficiencies of beams of arbitrary cross-section which are part of many fabricated machines found in industry. © 1979.