EXPERIMENTAL-DETERMINATION OF THE TOTAL VIBRATORY POWER TRANSMISSION IN AN ELASTIC BEAM

A structure can simultaneously support different types of structural w aves. For active control of vibration in a beam structure, it is neces sary to consider all wave types simultaneously. Thus it is necessary t o be able to measure the vibration amplitude associated with all wave types at any beam cross section as well as the total vibratory power t ransmission associated with all wave types. In this paper, the theoret ical basis is outlined for a new method which allows measurement of al l the required quantities using appropriately oriented and located acc elerometers. Experimental results are also provided to illustrate the usefulness of this method. (C) 1998 Acoustical Society of America. [S0 001-4966(98)04408-7].