1、Designation:E296315Standard Test Method forLaboratory Measurement of Acoustical Effectiveness ofShip Noise Treatments Laboratory Measurement ofAcoustical Effectiveness for Marine Bulkhead and DeckTreatments1This standard is issued under the fixed designation E2963;the number immediately following th
2、e designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis test method is designed t
3、o measure the acoustical effectiveness of treatments that are intendedto reduce airborne noise on ships.Such treatments would be applied to compartment structuralpartitions such as bulkheads,decks,and side shells.To fully characterize the acoustical performanceof a treatment,five parameters must be
4、assessed:transmission loss,radiation efficiency,acceptance,absorption,and damping.This test method focuses on the assessment of the first three,and providesfor convenient assessments of absorption and damping.Tests discussed in this method are based onthe Test Method E90 setup and procedure.This tes
5、t method is not intended to be a replacement of TestMethod E90;conversely,this method builds on the E90 method that is now well established.Similarly,this test method does not replace absorption testing discussed in Test Method C423,nor dampingtesting discussed in Test Method E756,though for reasons
6、 of convenience this method can be used tomake approximate assessments of how different treatments may impact these parameters.1.Scope1.1 This test method covers the laboratory measurement ofthe acoustical effectiveness of treatments installed on shipbulkheads,decks,and side shells.Measurements are
7、focusedon assessing changes in transmission loss,radiation efficiency,and acceptance that occur when treatments are applied.Mea-surements of changes to absorption and damping are addressedin Appendix X1 and Appendix X2,respectively.1.2 The values stated in SI units are to be regarded asstandard.No o
8、ther units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of
9、 regulatory limitations prior to use.1.4 Any material that is to be installed on a marine divisionmust meet appropriate fire,combustibility,and other applicableSOLAS,USCG,IMO,Navy,or other required non-acousticalstandards and specifications.See Appendix X3 for additionalinformation.2.Referenced Docu
10、ments2.1 ASTM Standards:2C423 Test Method for SoundAbsorption and SoundAbsorp-tion Coefficients by the Reverberation Room MethodE634 Practice for Sampling of Zinc and Zinc Alloys bySpark Atomic Emission SpectrometryE90 Test Method for Laboratory Measurement of AirborneSound Transmission Loss of Buil
11、ding Partitions andElementsE756 Test Method for Measuring Vibration-Damping Prop-erties of Materials2.2 ANSI Standards:3ANSI S1.4-1983(R2006)Specification for Sound LevelMetersANSI S1.6-1984(R2011)Preferred Frequencies,Frequency1This test method is under the jurisdiction ofASTM Committee E33 on Buil
12、dingand Environmental Acoustics and is the direct responsibility of SubcommitteeE33.03 on Sound Transmission.Current edition approved Dec.1,2015.Published December 2015.Originallyapproved in 2014.Last previous edition approved in 2014 as E2963 14.DOI:10.1520/E296315.2For referenced ASTM standards,vi
13、sit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 100
14、36,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Levels,and Band Number for Acoustical MeasurementsANSI S1.8-1989(R2011),Reference Quantities for Acous-tical LevelsANSI S1.11-2004(R2009)Specification for Octave-Bandan
15、d Fractional-Octave-Band Analog and Digital FiltersANSI S1.43-1997(R2007)Specifications for Integrating-Averaging Sound Level Meters2.3 ISO Stadnard:4ISO 16063-1:1998,Methods for the Calibration of Vibrationand Shock Transducers3.Terminology3.1 Definitions:The following terms used in this testmethod
16、 have specific meanings that are defined in TerminologyE634.airborne soundaverage sound pressure levelbackground noisedampingdecibeldiffuse sound fielddirect sound fieldflanking transmissionleveloctave bandreceiving roomreverberant sound fieldreverberation roomsound levelsound pressuresound pressure levelsource roomunit3.1.1 As defined in Test Method E90 transmission loss is thedifference in decibels between the average sound pressurelevels in the reverberant source and receiving rooms,plus tent