GB/T 32523-2016 English PDF

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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
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 32523-2016	299	Add to Cart	3 days	Acoustics -- Measurement of sound pressure reflection coefficient, sound pressure transmission coefficient and absorption coefficient for underwater acoustical material sample -- Travelling wave tube method	Valid

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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

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
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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