ASTM E2963-2016 Standard Test Method for Laboratory Measurement of Acoustical Effectiveness of Ship Noise Treatments Laboratory Measurement of Acoustical Effectiveness for Marine B.pdf
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1、Designation: E2963 15E2963 16Standard 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 f
2、ollowing the 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 met
3、hod is designed to 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, fi
4、ve parameters must be 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
5、 setup and procedure. This test 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 T
6、est Method E756, though for reasons 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 of the acoustical effectiveness of treatments installed on shipbulkheads, d
7、ecks, and side shells. Measurements are focused on assessing changes in transmission loss, radiation efficiency, andacceptance that occur when treatments are applied. Measurements of changes to absorption and damping are addressed inAppendix X1 and Appendix X2, respectively.1.2 The values stated in
8、SI units are to be regarded as standard. No other units of measurement are included in this standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and hea
9、lth practices and determine the applicability of regulatorylimitations prior to use.1.4 Any material that is to be installed on a marine division must meet appropriate fire, combustibility, and other applicableSOLAS, USCG, IMO, Navy, or other required non-acoustical standards and specifications. See
10、 Appendix X3 for additionalinformation.2. Referenced Documents2.1 ASTM Standards:2C423 Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room MethodE634 Practice for Sampling of Zinc and Zinc Alloys by Spark Atomic Emission SpectrometryE90 Test Method for Labora
11、tory Measurement of Airborne Sound Transmission Loss of Building Partitions and ElementsE756 Test Method for Measuring Vibration-Damping Properties of Materials1 This test method is under the jurisdiction of ASTM Committee E33 on Building and Environmental Acoustics and is the direct responsibility
12、of Subcommittee E33.03on Sound Transmission.Current edition approved Dec. 1, 2015April 1, 2016. Published December 2015April 2016. Originally approved in 2014. Last previous edition approved in 20142015 asE2963 14. 15. DOI: 10.1520/E296315.10.1520/E2963-16.2 For referencedASTM standards, visit theAS
13、TM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an in
14、dication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be
15、 considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.2 ANSI Standards:3ANSI S1.4-1983 (R2006) Specification for Sound Level MetersANSI S1.6-1984 (R2011) Preferred Frequencies, Frequency Levels, and Band
16、Number for Acoustical MeasurementsANSI S1.8-1989 (R2011) ,Reference Quantities for Acoustical LevelsANSI S1.11-2004 (R2009) Specification for Octave-Band and Fractional-Octave-Band Analog and Digital FiltersANSI S1.43-1997 (R2007) Specifications for Integrating-Averaging Sound Level Meters2.3 ISO St
17、adnard:4ISO 16063-1:1998 , Methods for the Calibration of Vibration and Shock Transducers3. Terminology3.1 Definitions: The following terms used in this test method have specific meanings that are defined in Terminology E634.airborne soundaverage sound pressure levelbackground noisedampingdecibeldif
18、fuse 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 the difference in decibels between the average sound pres
19、sure levelsin the reverberant source and receiving rooms, plus ten times the common logarithm of the ratio of the area of the common partitionto the sound absorption in the receiving room (see Eq 4).3.1.2 As defined in Test Method E90 sound absorption of a room in a specified frequency band is the h
20、ypothetical area of atotally absorbing surface without diffraction effects which, if it were the only absorbing element in the room, would give the samesound decay rate as the room under consideration.3.2 Definitions of Terms Specific to This Standard:3.2.1 acceptance, na measure of the vibration ve
21、locity level induced in a structure that is exposed to a diffuse sound fieldcomposed of one or more frequencies (see Eq 6).3.2.2 acoustical effectiveness, na measure of the change in a particular acoustical parameter that is created by the addition ofa material to the base structure.3.2.3 radiation
22、effciency, na measure relating the sound pressure level in a diffuse sound field that is produced by a vibratingstructural surface, referenced to a specified vibration velocity level, when that surface is moving in an oscillatory motion at oneor more frequencies (see Eq 8).3.2.4 test or base structu
23、re, nThe structure representing a bulkhead, deck, or shell of a ship.3.2.4.1 DiscussionThe base structure is typically constructed with steel or aluminum stiffened plating, though other construction types are possible.This is the structure to which treatments are applied.3.3 Symbols:A = room constan
24、t, m2S = area of partition (structure under test), m2a = acceleration, m/s2c = speed of sound in air, m/sdB = decibelsf = frequency, Hzp = pressure, Pa3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.4 Available from Int
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