EN ISO 9053-1:2018

Acoustics - Determination of airflow resistance - Part 1: Static airflow method (ISO 9053-1:2018)

This document specifies the measurement of the determination of the static airflow resistance[1,2], in a laminar flow regime, of porous materials for acoustical applications.

Akustik - Bestimmung des Strömungswiderstandes - Teil 1: Verfahren mit statischer Luftströmung (ISO 9053-1:2018)

Acoustique - Détermination de la résistance à l'écoulement de l'air - Partie 1: Méthode statique (ISO 9053-1:2018)

Le présent document spécifie le mesurage de la résistance statique à l'écoulement de l'air[1,2], en régime d'écoulement laminaire, des matériaux poreux utilisés pour les applications acoustiques.

Akustika - Določevanje upora pretoku zraka - 1. del: Statična metoda (ISO 9053-1:2018)

Ta dokument določa merjenje določevanja statičnega upora pretoku zraka [1,2] v režimu laminarnega toka pri poroznih materialih za uporabo v akustiki.

General Information

• Status: Published
• Publication Date: 11-Dec-2018
• Withdrawal Date: 29-Jun-2019
• ICS: 17.140.01 - Acoustic measurements and noise abatement in general
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: CEN/TC 126 - Acoustic properties of building products and of buildings
• Drafting Committee: CEN/TC 126 - Acoustic properties of building products and of buildings
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 12-Dec-2018
• Completion Date: 12-Dec-2018
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Mandate: M/103 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on thermal insulating products
• Ref Project: SIST EN ISO 9053-1:2019 - Acoustics - Determination of airflow resistance - Part 1: Static airflow method (ISO 9053-1:2018)

Relations

• Replaces: EN 29053:1993 - Acoustics - Materials for acoustical applications - Determination of airflow resistance (ISO 9053:1991)
• Effective Date: 19-Dec-2018
• Revised: prEN ISO 9053-1 - Acoustics - Determination of airflow resistance - Part 1: Static airflow method (ISO/DIS 9053-1:2025)
• Effective Date: 05-Nov-2024

Overview

EN ISO 9053-1:2018 - "Acoustics - Determination of airflow resistance - Part 1: Static airflow method" - defines a standard test method for measuring the static airflow resistance of porous materials used in acoustical applications. The method measures the pressure drop across a test specimen under a controlled, unidirectional (laminar) airflow to determine airflow resistance, specific airflow resistance, airflow resistivity and related properties important for sound absorption and acoustic design.

Key topics and technical requirements

• Scope and principle
  • Measurement of static airflow resistance in a laminar flow regime by recording the pressure difference across the specimen while controlling the volumetric airflow.
• Test specimens
  • Typical specimen shapes: circular cylinders or rectangular parallelepipeds. Dimensions are selected to match the measurement cell; thickness is measured in-situ.
• Measurement cell and flow conditions
  • Cell may be cylindrical or rectangular (square cross-section preferred). Minimum diameter or smallest edge: 29 mm.
  • Cell geometry and clearances must allow essentially laminar, unidirectional flow (recommended free space ahead/behind the specimen).
• Equipment
  • Required devices: steady airflow generator (vacuum or pressurization), volumetric airflow meter, differential pressure transducer, thickness gauge, and a specimen support (perforated support or wire grid).
  • Support requirements: minimum open area 50%, holes at least 3 mm diameter, and support airflow resistance should be negligible (document requires support resistance to be less than 1% of specimen resistance).
  • Measurement devices should be calibrated at least once every 2 years.
• Definitions and relations
  • Airflow resistance R = Δp / qv (Pa·s·m⁻³), specific airflow resistance Rs = R × A (Pa·s·m⁻¹), airflow resistivity σ = Rs / d (Pa·s·m⁻²), and permeability k0 = η / σ (η = dynamic viscosity of air ≈ 1.82×10⁻⁵ N·s·m⁻² at 20 °C).
• Documentation
  • Test procedure, precision, and required information for the test report are specified.

Applications and users

• Useful for manufacturers and developers of porous acoustic materials (fibrous absorbers, felt, foam, insulation).
• Employed by acoustic consultants, test laboratories, product certification bodies, and R&D teams to:
  • Characterize material airflow resistivity for acoustic modeling and sound absorption predictions.
  • Verify product performance and support product specifications for building acoustics, HVAC noise control and automotive or industrial acoustic treatments.
• Inputs from EN ISO 9053-1 are commonly used in acoustic material selection, simulation, and quality control.

Related standards

• This document is Part 1 of the ISO 9053 series and supersedes EN 29053:1993. See the ISO 9053 series for complementary parts and broader context on airflow resistance measurement.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2019
1DGRPHãþD
SIST EN 29053:1999
$NXVWLND'RORþHYDQMHXSRUDSUHWRNX]UDNDGHO6WDWLþQDPHWRGD,62

Acoustics - Determination of airflow resistance - Part 1: Static airflow method (ISO 9053-
1:2018)
Akustik - Bestimmung des Strömungswiderstandes - Teil 1: Verfahren mit statischer
Luftströmung (ISO 9053-1:2018)
Acoustique - Détermination de la résistance à l'écoulement de l'air - Partie 1: Méthode
statique (ISO 9053-1:2018)
Ta slovenski standard je istoveten z: EN ISO 9053-1:2018
ICS:
17.140.01 $NXVWLþQDPHUMHQMDLQ Acoustic measurements and
EODåHQMHKUXSDQDVSORãQR noise abatement in general
91.100.60 0DWHULDOL]DWRSORWQRLQ Thermal and sound insulating
]YRþQRL]RODFLMR materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 9053-1
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2018
EUROPÄISCHE NORM
ICS 91.100.60 Supersedes EN 29053:1993
English Version
Acoustics - Determination of airflow resistance - Part 1:
Static airflow method (ISO 9053-1:2018)
Acoustique - Détermination de la résistance à Akustik - Bestimmung des Strömungswiderstandes -
l'écoulement de l'air - Partie 1: Méthode statique (ISO Teil 1: Verfahren mit statischer Luftströmung (ISO
9053-1:2018) 9053-1:2018)
This European Standard was approved by CEN on 4 November 2018.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9053-1:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 9053-1:2018) has been prepared by Technical Committee ISO/TC 43
"Acoustics" in collaboration with Technical Committee CEN/TC 126 “Acoustic properties of building
elements and of buildings” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2019, and conflicting national standards shall be
withdrawn at the latest by June 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 29053:1993.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 9053-1:2018 has been approved by CEN as EN ISO 9053-1:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 9053-1
First edition
2018-10
Acoustics — Determination of airflow
resistance —
Part 1:
Static airflow method
Acoustique — Détermination de la résistance à l'écoulement de l'air —
Partie 1: Méthode statique
Reference number
ISO 9053-1:2018(E)
©
ISO 2018
ISO 9053-1:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 9053-1:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3  Terms and definitions . 1
4  Principle . 3
5 Equipment . 3
5.1 General . 3
5.2 Measurement cell . 3
5.3 Device for producing airflow . 4
5.4 Device for measuring volumetric airflow . 4
5.5 Device for measuring differential pressure . 4
5.6 Use of calibration test specimens . 5
6 Test specimens. 5
6.1 Shape . 5
6.2 Dimensions . 5
6.2.1 Lateral dimensions . . 5
6.2.2 Thickness . 6
6.3 Number of test specimens . 6
7  Test procedure . 6
8 Precision . 7
9 Test report . 7
Annex A (informative) Estimation of the static airflow resistivity . 8
Bibliography . 9
ISO 9053-1:2018(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 2, Building
acoustics.
This first edition of ISO 9053-1 cancels and replaces ISO 9053:1991, which has been technically revised.
The main changes are as follows:
— title changed;
— alternating airflow method deleted.
A list of all parts in the ISO 9053 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved

INTERNATIONAL STANDARD ISO 9053-1:2018(E)
Acoustics — Determination of airflow resistance —
Part 1:
Static airflow method
1 Scope
[1,2]
This document specifies the measurement of the determination of the static airflow resistance , in a
laminar flow regime, of porous materials for acoustical applications.
2 Normative references
There are no normative references in this document.
3  Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
airflow resistance
R
quantity defined by
Δp
R=
q
v
where
Δp is the air pressure difference, in pascal, across the test specimen with respect to the atmosphere;
q is the volumetric airflow rate, in cubic metre per second, passing through the test specimen.
v
Note 1 to entry: It is expressed in pascal second per cubic metre.
3.2
specific airflow resistance
R
s
quantity defined by
RR=×A
s
where
ISO 9053-1:2018(E)
R is the airflow resistance, in pascal second per cubic metre, of the test specimen;
A is the cross-section area, in square metre, of the test specimen perpendicular to the direction
of flow.
Note 1 to entry: It is expressed in pascal second per metre.
3.3
airflow resistivity
σ
quantity defined by the following formula if the material is considered as being homogeneous
R
s
σ =
d
where
R is the specific airflow resistance, in pascal second per metre, of the test specimen;
s
d is the thickness, in metre, of the test specimen in the direction of flow.
Note 1 to entry: lt is expressed in pascal second per square metre.
3.4
linear airflow velocity
u
quantity defined by
q
v
u=
A
where
q is the volumetric ai
...