SIST EN ISO 9053-2:2020 PDF

Name: SIST EN ISO 9053-2:2020 — Acoustics - Determination of airflow resistance - Part 2: Alternating airflow method (ISO 9053-2:2020)
SKU: SIST EN ISO 9053-2:2020
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Acoustics - Determination of airflow resistance - Part 2: Alternating airflow method (ISO 9053-2:2020)

Название (английский):

SIST EN ISO 9053-2:2020

Acoustics - Determination of airflow resistance - Part 2: Alternating airflow method (ISO 9053-2:2020)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 27
Дата публикации:: 16 ноября 2020 г.
ICS:: 17.140.01
Технический комитет:: AKU - Acoustics

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Цена:405 €

Описание (английский):

This document specifies an alternating airflow method for the determination of the airflow resistance[5], [6] of porous materials for acoustical applications. Determination of the airflow resistance based on static flow is described in ISO 9053‑1.

Abstract

Overview

Key topics and requirements

Scope and purpose: Measurement of airflow resistance (R), expressed as the ratio of RMS pressure difference across a specimen to RMS volumetric flow (Δp / q), for porous acoustical materials.
Definitions and symbols: Clear definitions for airflow resistance, specific airflow resistance (Rs), airflow resistivity (σ), airflow velocity, sound pressure level and related quantities; reference sound pressure is 20 μPa.
Principle: Uses an alternating (oscillatory) airflow generated by a piston or similar device; the method records RMS pressure and volumetric flow in a measurement cell to obtain R.
Equipment requirements:
- Device producing alternating airflow (piston or equivalent)
- Sound measuring device and pressure sensors
- Measurement cell / vessel and airtight termination
- Devices to measure static pressure and piston frequency
Test specimens: Guidance on homogeneity, shape, lateral dimensions and thickness; number of specimens to be tested.
Procedure and corrections: Step‑by‑step test procedure, thermal conduction correction and acoustic modelling considerations to ensure accurate results.
Uncertainty and reporting: Annexes provide calculation of measurement uncertainty (GUM guidance), and required content for test reports.
Informative annexes: Effective ratio of specific heats for air, acoustic flow models, uncertainty calculation examples, and treatment of airflow resistance with perforated supports.

Applications and practical value

Characterizing porous absorbers, insulation, and acoustic liners for product development and quality control.
Specifying material input parameters for acoustic modelling, room acoustics design and sound-absorbing product selection.
Verifying compliance with acoustic performance claims in manufacturing and certification.
Useful in R&D, test laboratories, façade and building acoustics, HVAC silencer design and automotive/transport acoustic component testing.

Who should use this standard

Acoustical engineers and consultants
Materials and insulation manufacturers
Accredited test laboratories and metrology institutes
Product certification bodies and building acoustics specialists
R&D teams developing sound-absorbing materials

Related standards

ISO 9053‑1 - Determination of airflow resistance by static flow (complements Part 2)
ISO/IEC Guide 98‑3 (GUM) - Guide for expression of measurement uncertainty

Keywords: EN ISO 9053-2:2020, alternating airflow method, airflow resistance, airflow resistivity, acoustics, porous materials, specific airflow resistance, ISO 9053.

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SKU: SIST EN ISO 9053-2:2020

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ISO 9053-2:2020

Действующий

Acoustics — Determination of airflow resistance — Part 2: Alternating airflow method

Overview ISO 9053-2:2020 - Acoustics: Determination of airflow resistance - Part 2: Alternating airflow method specifies an alternating‑airflow test technique for measuring the airflow resistance of…

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SIST EN ISO 9053-2:2020 PDF

Abstract

Overview

Похожие стандарты

Key topics and requirements

Applications and practical value

Who should use this standard

Related standards

Технические детали

ISO 9053-2:2020

Acoustics — Determination of airflow resistance — Part 2: Alternating airflow method

ISO 9053:1991

Acoustics — Materials for acoustical applications — Determination of airflow resistance

SIST EN ISO 6338:2026

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SIST EN ISO 41002:2026

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