EN 17117-2:2021
(Main)Rubber- or plastics-coated fabrics - Mechanical test methods under biaxial stress states - Part 2: Determination of the pattern compensation values
Rubber- or plastics-coated fabrics - Mechanical test methods under biaxial stress states - Part 2: Determination of the pattern compensation values
This document describes methods for the determination of compensation values for orthotropic coated fabrics (different properties along ideally perpendicular directions, such as the weft and warp yarns for woven based coated fabrics, or along the courses and wales of knitted based coated fabrics) for determining cutting patterns.
NOTE The final interpretation and the determination of the compensation values remains the responsibility of the project engineer.
Annex C describes a method to determine comparable measures of extensibility along ideally perpendicular directions of coated fabrics. The comparable measures of extensibility can be used by design engineers to assess the extensibility of a coated fabric by comparison with other coated fabrics. In this way, they can help to interpret results of compensation tests. Moreover, they can be used by material suppliers to measure the consistency of extensibility along perpendicular directions of a coated fabric from batch to batch.
Mit Kautschuk oder Kunststoff beschichtete Textilien — Mechanische Prüfverfahren unter biaxialen Spannungszuständen — Teil 2: Bestimmung der Kompensationswerte
Dieses Dokument beschreibt Verfahren zur Bestimmung der Kompensationswerte für orthotrope beschich-tete Textilien (unterschiedliche Eigenschaften in Bezug auf idealerweise senkrechte Richtungen wie Schuss und Kette bei gewebten beschichteten Textilien oder entlang der Produktionsrichtung und senkrecht dazu bei beschichteten Maschenwaren) zwecks Bestimmung der Schnittmuster.
ANMERKUNG Die endgültige Interpretation und die Bestimmung der Kompensationswerte verbleibt in der Verant-wortung des Projektingenieurs.
Anhang C beschreibt ein Verfahren zur Bestimmung von Vergleichsmaßen der Dehnfähigkeit in Bezug auf idealerweise senkrechte Richtungen bei beschichteten Textilien. Die Vergleichsmaße der Dehnfähigkeit können von Tragwerksplanern zur Bewertung der Dehnfähigkeit eines beschichteten Textils durch Vergleich mit anderen beschichteten Textilien verwendet werden. Auf diese Weise können sie bei der Interpretation der Ergebnisse der Kompensationsversuche helfen. Darüber hinaus können sie von Werkstofflieferanten zur chargenübergreifenden Messung der Konsistenz der Dehnfähigkeit in Bezug auf senkrechte Richtungen eines beschichteten Textils verwendet werden.
Supports textiles revêtus de caoutchouc ou de plastique - Méthodes d’essais mécaniques sous contraintes biaxiales - Partie 2: Détermination des valeurs de compensation du patronnage
Le présent document décrit les méthodes de détermination des valeurs de compensation pour les supports textiles revêtus orthotropes (différentes propriétés suivant des directions idéalement perpendiculaires, comme les fils de trame et de chaîne pour les supports textiles revêtus tissés, ou suivant les rangées et colonnes de mailles des supports textiles revêtus tricotés) afin de déterminer les patrons de coupe.
NOTE L’interprétation finale et la détermination des valeurs de compensation restent de la responsabilité de l’ingénieur du projet.
L’Annexe C décrit une méthode permettant de déterminer des mesures d’extensibilité comparables suivant des directions idéalement perpendiculaires des supports textiles revêtus. Les mesures d’extensibilité comparables peuvent être utilisées par les ingénieurs de conception pour évaluer l’extensibilité d’un support textile revêtu par comparaison avec d’autres supports textiles revêtus. Elles peuvent ainsi faciliter l’interprétation des résultats des essais de compensation. En outre, elles peuvent être utilisées par les fournisseurs de matériaux pour mesurer la constance de l’extensibilité dans les directions perpendiculaires d’un support textile revêtu entre les lots.
Gumirane ali plastificirane tekstilije - Mehanske preskusne metode v dvoosnih napetostnih stanjih - 2. del: Določanje vrednosti kompenzacije vzorca
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2021
Gumirane ali plastificirane tekstilije - Mehanske preskusne metode v dvoosnih
napetostnih stanjih - 2. del: Določanje vrednosti kompenzacije vzorca
Rubber- or plastics-coated fabrics - Mechanical test methods under biaxial stress states -
Part 2: Determination of the pattern compensation values
Mit Kautschuk oder Kunststoff beschichtete Textilien - Mechanische Prüfverfahren unter
biaxialer Spannung - Teil 2: Bestimmung der Kompensationswerte
Supports textiles revêtus de caoutchouc - Méthodes d'essais mécaniques sous
contraintes biaxiales - Partie 2 : Détermination des valeurs de compensation des
modèles
Ta slovenski standard je istoveten z: EN 17117-2:2021
ICS:
59.080.40 Površinsko prevlečene Coated fabrics
tekstilije
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 17117-2
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2021
EUROPÄISCHE NORM
ICS 59.080.40
English Version
Rubber- or plastics-coated fabrics - Mechanical test
methods under biaxial stress states - Part 2: Determination
of the pattern compensation values
Supports textiles revêtus de caoutchouc ou de Mit Kautschuk oder Kunststoff beschichtete Textilien -
plastique - Méthodes d'essais mécaniques sous Mechanische Prüfverfahren unter biaxialen
contraintes biaxiales - Partie 2: Détermination des Spannungszuständen - Teil 2: Bestimmung der
valeurs de compensation du patronnage Kompensationswerte
This European Standard was approved by CEN on 21 June 2021.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17117-2:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 8
5 Apparatus . 8
5.1 Biaxial test equipment . 8
5.2 Measurement of load . 8
5.3 Measurement of strain . 8
6 Sampling and preparation of test specimens . 8
6.1 Bulk sample (number of pieces from a shipment or lot) . 8
6.2 Number of laboratory samples . 8
6.3 Specimen geometry and preparation . 8
6.3.1 General . 8
6.3.2 Contact strain measurement . 8
6.3.3 Non-contact strain measurement. 8
7 Atmosphere for conditioning and testing . 8
8 Test procedure . 9
8.1 Mounting of the specimen . 9
8.2 Loading and selection of strain values . 9
8.3 Testing . 12
8.4 Recording . 12
9 Representation of test results and calculation of compensation values . 12
9.1 Representation. 12
9.2 Determination of compensation values . 13
9.3 Decompensation . 13
9.4 Comparable measures of extensibility . 13
10 Test report . 13
Annex A (informative) Load profiles and selected strain values (examples) . 14
A.1 Generality . 14
A.2 Load profiles – example I . 14
A.3 Load profiles – example II . 15
A.4 Load profiles – example III. 18
Annex B (informative) Example evaluation of project specific compensation values . 19
Annex C (normative) Load profile for comparative extensibility measures of coated fabrics . 22
Bibliography . 23
European foreword
This document (EN 17117-2:2021) has been prepared by Technical Committee CEN/TC 248 “Textiles
and textile products”, the secretariat of which is held by BSI.
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 January 2022, and conflicting national standards shall
be withdrawn at the latest by January 2022.
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
EN 17117 consists of the following parts, under the general title Rubber- or plastics-coated fabrics —
Mechanical test methods under biaxial stress states:
— Part 1: Tensile stiffness properties
— Part 2: Determination of the pattern compensation values
An additional part related to shear stiffness properties will be proposed after the publication of the
previous parts.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Introduction
Compensation is the process of reducing the size of cutting patterns with the objective to introduce and
maintain the desired range of prestress specified in the structural design using coated fabrics such as
architectural tensioned envelopes. Elastic strain correspondent to the prestress and irreversible strain
of the coated fabrics induced by tensioning during installation and potential load incidents over the
lifetime of an architectural tensioned envelope, should be compensated to achieve the objective. Different
compensation values may be applied to different parts of the same architectural tensioned envelope.
Decompensation may also be applied if required.
1 Scope
This document describes methods for the determination of compensation values for orthotropic coated
fabrics (different properties along ideally perpendicular directions, such as the weft and warp yarns for
woven based coated fabrics, or along the courses and wales of knitted based coated fabrics) for
determining cutting patterns.
NOTE The final interpretation and the determination of the compensation values remains the responsibility of
the project engineer.
Annex C describes a method to determine comparable measures of extensibility along ideally
perpendicular directions of coated fabrics. The comparable measures of extensibility can be used by
design engineers to assess the extensibility of a coated fabric by comparison with other coated fabrics. In
this way, they can help to interpret results of compensation tests. Moreover, they can be used by material
suppliers to measure the consistency of extensibility along perpendicular directions of a coated fabric
from batch to batch.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 17117-1, Rubber or plastics-coated fabrics - Mechanical test methods under biaxial stress states - Part
1: Tensile stiffness properties
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
biaxial
measurement or application along two axes simultaneously
[SOURCE: EN 17117-1:2018, 3.1]
3.2
compensation
reduction in size of a cutting pattern, so that during installation the panel elongates to achieve an initial
nominal prestress
3.3
compensation value
amount by which the dimensions of the pattern geometry is reduced by compensation
Note 1 to entry: The compensation value is expressed as a percentage of length in the direction to be
compensated.
3.4
cutting pattern
two-dimensional geometry developed from a pattern to be cut out of the individual piece of a coated
fabric
3.5
decompensation
partial or complete reduction of compensation
Note 1 to entry: Decompensation may be applied to ease the installation process, typically in the vicinity of
boundaries.
Note 2 to entry: Typical application of compensation and decompensation to a piece of a coated fabric is depicted
in Figure 1.
Key
1 final geometry when stressed with nominal prestress
2 geometry compensated, unstressed
3 geometry decompensated, unstressed
4 half of the pattern compensation measure in warp (wale, respectively)
5 half of the pattern compensation measure in fill (course, respectively)
Figure 1 — Typical application of compensation and decompensation to a piece of a coated
fabric
...
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