Applications of the intensity technique to ship structures: Sound absorption, radiation and transmission loss

Pertti Hynnä

Research output: Book/ReportReport

Abstract

A literature survey on applications of sound intensity technique to the measurement of sound radiation efficiency, transmission loss and absorption of paneltype ship structures is given. Some basic theory for the calculation of sound radiation efficiency and sound transmission loss of single and double panels is presented. Equations of the sound intensity measurement technique in different applications are given. Measurement results obtained with the intensity technique are compared with results of conventional or standardised methods based on literature. The effects of stiffening, holes and slits on the acoustic properties of partitions, which are important in practice, are reviewed. Many of the equations for sound radiation efficiency and transmission loss were programmed as subroutines and included in the SEA (Statistical Energy Analysis) program package developed at the VP Ship Laboratory.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages62
ISBN (Print)951-38-3637-1
Publication statusPublished - 1990
MoE publication typeNot Eligible

Publication series

SeriesValtion teknillinen tutkimuskeskus. Tiedotteita
Number1086
ISSN0358-5085

Fingerprint

sound transmission
transmission loss
ships
sound intensity
acoustics
radiation
subroutines
transmission efficiency
stiffening
acoustic properties
slits
partitions
energy

Keywords

  • ship structural components
  • shipbuilding
  • hulls (structures)
  • acoustic absorption
  • sound transmission
  • intensity
  • transmission loss
  • panels

Cite this

Hynnä, P. (1990). Applications of the intensity technique to ship structures: Sound absorption, radiation and transmission loss. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tiedotteita, No. 1086
Hynnä, Pertti. / Applications of the intensity technique to ship structures : Sound absorption, radiation and transmission loss. Espoo : VTT Technical Research Centre of Finland, 1990. 62 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 1086).
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Hynnä, P 1990, Applications of the intensity technique to ship structures: Sound absorption, radiation and transmission loss. Valtion teknillinen tutkimuskeskus. Tiedotteita, no. 1086, VTT Technical Research Centre of Finland, Espoo.

Applications of the intensity technique to ship structures : Sound absorption, radiation and transmission loss. / Hynnä, Pertti.

Espoo : VTT Technical Research Centre of Finland, 1990. 62 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 1086).

Research output: Book/ReportReport

TY - BOOK

T1 - Applications of the intensity technique to ship structures

T2 - Sound absorption, radiation and transmission loss

AU - Hynnä, Pertti

PY - 1990

Y1 - 1990

N2 - A literature survey on applications of sound intensity technique to the measurement of sound radiation efficiency, transmission loss and absorption of paneltype ship structures is given. Some basic theory for the calculation of sound radiation efficiency and sound transmission loss of single and double panels is presented. Equations of the sound intensity measurement technique in different applications are given. Measurement results obtained with the intensity technique are compared with results of conventional or standardised methods based on literature. The effects of stiffening, holes and slits on the acoustic properties of partitions, which are important in practice, are reviewed. Many of the equations for sound radiation efficiency and transmission loss were programmed as subroutines and included in the SEA (Statistical Energy Analysis) program package developed at the VP Ship Laboratory.

AB - A literature survey on applications of sound intensity technique to the measurement of sound radiation efficiency, transmission loss and absorption of paneltype ship structures is given. Some basic theory for the calculation of sound radiation efficiency and sound transmission loss of single and double panels is presented. Equations of the sound intensity measurement technique in different applications are given. Measurement results obtained with the intensity technique are compared with results of conventional or standardised methods based on literature. The effects of stiffening, holes and slits on the acoustic properties of partitions, which are important in practice, are reviewed. Many of the equations for sound radiation efficiency and transmission loss were programmed as subroutines and included in the SEA (Statistical Energy Analysis) program package developed at the VP Ship Laboratory.

KW - ship structural components

KW - shipbuilding

KW - hulls (structures)

KW - acoustic absorption

KW - sound transmission

KW - intensity

KW - transmission loss

KW - panels

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SN - 951-38-3637-1

T3 - Valtion teknillinen tutkimuskeskus. Tiedotteita

BT - Applications of the intensity technique to ship structures

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CY - Espoo

ER -

Hynnä P. Applications of the intensity technique to ship structures: Sound absorption, radiation and transmission loss. Espoo: VTT Technical Research Centre of Finland, 1990. 62 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 1086).