Multi-path sound transfer from resiliently mounted shipboard machinery: Experimental methods for analyzing and improving noise control

The installation of shipboard machinery on resilient elements is a well known and, generally speaking, quite effective noise reduction measure. However, methods for systematic investigation of the factors which limit the effectiveness of this measure in practice, are largely incomplete. This concerns methods for determining the remaining vibrational energy flow through the supporting resilient mountings and also that along so-called flanking paths. This thesis presents new contributions to the methodology for analyzing the multi-path sound transfer in resilient mounting systems on board ships and for improving such systems in an economical way.