LOW-FREQUENCY ANECHOIC TANK FOR UNDERWATERSOUND STUDIES
Abstract
The building (in conjunction with laboratory studies of underwater acoustics) of an anechoic tank is described. The walls were made highly absorptive by using a combination of high-density concrete and SAPER T absorber material. Refined absorption was effected by the elimination of all free air-water interfaces and the exclusion of air from the space between the coating and wall structure. The tank has performed effectivelyAT FREQUENCIES AS LOW AS 200 CPS. The particular combination of SAPER T and wall structure was evaluated by measurements of standing wave ratio. Problems of design and maintenance were easily solved, and isolation was provided from structureborne noise. An incidental feature is the tank's ready convertiblity for reverberation studies. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 1962
- Accession Number
- AD0287599
Entities
People
- C.l. Wakamo
Organizations
- University of Michigan