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GB/T 32523-2016: Acoustics -- Measurement of sound pressure reflection coefficient, sound pressure transmission coefficient and absorption coefficient for underwater acoustical material sample -- Travelling wave tube method
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Acoustics -- Measurement of sound pressure reflection coefficient, sound pressure transmission coefficient and absorption coefficient for underwater acoustical material sample -- Travelling wave tube method
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GB/T 32523-2016
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Basic data | Standard ID | GB/T 32523-2016 (GB/T32523-2016) | | Description (Translated English) | Acoustics -- Measurement of sound pressure reflection coefficient, sound pressure transmission coefficient and absorption coefficient for underwater acoustical material sample -- Travelling wave tube method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A59 | | Classification of International Standard | 17.140 | | Word Count Estimation | 15,123 | | Date of Issue | 2016-02-24 | | Date of Implementation | 2016-09-01 | | Regulation (derived from) | National Standard Announcement No | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 32523-2016: Acoustics -- Measurement of sound pressure reflection coefficient, sound pressure transmission coefficient and absorption coefficient for underwater acoustical material sample -- Travelling wave tube method
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Acoustics - Measurement of sound control reflection coefficient and absorption coefficient for underwater acoustical material sample - Traveling wave tube method
ICS 17.140
A59
National Standards of People's Republic of China
Acoustic acoustic material samples Sound pressure reflection coefficient,
Measurement of sound pressure transmission coefficient and sound absorption coefficient
Traveling wave tube method
2016-02-24 released
2016-09-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the Chinese Academy of Sciences.
This standard is under the jurisdiction of the National Acoustics Standardization Technical Committee (SAC/TC17).
The drafting unit of this standard. China Shipbuilding Industry Corporation, the 715 Institute, China Shipbuilding Industry Engineering Research Institute.
The main drafters of this standard. Li Shui, Luo Maqi, Chen Jianping, Yi Yan, Wei Wei, Zhao Hong, He Yuanan, Zufeng Lei.
Acoustic acoustic material samples Sound pressure reflection coefficient,
Measurement of sound pressure transmission coefficient and sound absorption coefficient
Traveling wave tube method
1 Scope
This standard specifies the use of traveling wave tube method to measure the acoustic pressure reflection coefficient, sound pressure transmission coefficient and sound absorption coefficient of the underwater acoustic material (or component)
The device, principles, conditions and methods.
This standard applies to the plane layered underwater acoustic material (or component) sample (hereinafter referred to as sample) in the temperature, pressure conditions 100Hz ~
(Or echo reduction), sound pressure transmission coefficient (or insertion loss), and sound absorption coefficient in the 3150 Hz band.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
Terminology of acoustics nouns GB/T 3947-1996
GB/T 14369-2011 Method for measuring insertion loss, echo reduction and sound absorption coefficient of acoustic underwater acoustic material samples
3 terms and definitions
The following definitions and definitions, as defined in GB/T 3947-1996 and GB/T 14369-2011, apply to this document.
3.1
Underwater Acoustic Materials
In the water sound engineering, with a specific acoustic properties of the material.
3.2
Traveling wave tube travelingwavetube
In which a plane traveling wave is generated and propagated, a liquid-filled waveguide for measuring the samples and components of the underwater acoustic material, or for calibrating the hydrophone.
Note. traveling wave tube generally use the wall thickness is not less than the radius of the tube stainless steel tube.
3.3
Sound pressure transmission coefficient soundpressuretransmissioncoefficient
Under the given frequency and environmental conditions, the plane acoustic waves in the water medium are incident on the surface of the infinite plate-like sample, and the transmitted sound pressure and the incident wave
Pressure ratio.
Note. In the case of actual measurement, the limited size sample is equivalent to an infinite sample with the edge effect negligible.
[GB/T 14369-2011, definition 3.4]
3.4
Sound pressure reflection coefficient soundpressurereflectioncoefficient
Under the given frequency and environmental conditions, the plane acoustic wave in the water medium is incident on the surface of the infinite plate sample, and the reflected sound pressure and the incident wave
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