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CEN

EN 12814-8:2021

(Main)

Testing of welded joints of thermoplastics semi-finished products - Part 8: Requirements

Testing of welded joints of thermoplastics semi-finished products - Part 8: Requirements

This document provides the requirements for the tests made on welded thermoplastics semi-finished products.
The selection of the appropriate test method(s) is made in accordance with the particular type and application of welded product.
The test results depend on the conditions of manufacture for the test specimen and on the test conditions. They can therefore only be related to the behaviour of the product or can only be used for designing a structure, if the test conditions can be related to the service conditions.

Prüfen von Schweißverbindungen aus thermoplastischen Kunststoffen - Teil 8: Anforderungen

In diesem Dokument werden Anforderungen an Prüfungen festgelegt, die an Schweißverbindungen aus thermoplastischen Kunststoffen durchgeführt werden.
Die Wahl des zweckmäßigen Prüfverfahrens wird entsprechend der jeweiligen Ausführung und Anwendung des geschweißten Produkts getroffen.
Die Prüfergebnisse sind von den Herstellbedingungen für die Probekörper und von den Prüfbedingungen abhängig. Sie können deshalb auf das Verhalten der Erzeugnisse oder für die Berechnung einer Konstruktion nur übertragbar sein, wenn die auftretenden Praxisbeanspruchungen den Prüfbedingungen entsprechen.

Essais des assemblages soudés sur produits semi-finis en thermoplastiques - Partie 8 : Exigences

Le présent document définit les exigences pour les essais réalisés sur les produits semi-finis soudés en thermoplastiques.
Le choix de la (des) méthode(s) d’essai appropriée(s) est fait conformément au type particulier et à l’application du produit soudé.
Les résultats des essais dépendent des conditions d’élaboration pour les éprouvettes et des conditions d’essai. Ils ne peuvent donc être liés qu'au comportement du produit ou ne peuvent être utilisés pour la conception d'une structure que si les conditions d'essai peuvent être liées aux conditions de service.

Preskušanje zvarjenih spojev plastomernih polizdelkov - 8. del: Zahteve

General Information

Status
Published
Publication Date
26-Jan-2021
Withdrawal Date
30-Jul-2021
ICS
25.160.40 - Welded joints and welds
Technical Committee
CEN/TC 249 - Plastics
Drafting Committee
CEN/TC 249/WG 16 - Welding of thermoplastics
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
27-Jan-2021
Due Date
15-Apr-2021
Completion Date
27-Jan-2021
Ref Project
SIST EN 12814-8:2021 - Testing of welded joints of thermoplastics semi-finished products - Part 8: Requirements

Relations

Replaces
EN 12814-8:2001 - Testing of welded joints of thermoplastics semi-finished products - Part 8: Requirements
Effective Date
03-Feb-2021
Replaces
EN 12814-8:2001/AC:2003 - Testing of welded joints of thermoplastics semi-finished products - Part 8: Requirements
Effective Date
03-Feb-2021
Revised
EN 12814-8:2024 - Testing of welded joints of thermoplastics semi-finished products - Part 8: Requirements
Effective Date
19-Jan-2023

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SLOVENSKI STANDARD
01-marec-2021
Nadomešča:
SIST EN 12814-8:2002
SIST EN 12814-8:2002/AC:2003
Preskušanje zvarjenih spojev plastomernih polizdelkov - 8. del: Zahteve
Testing of welded joints of thermoplastics semi-finished products - Part 8: Requirements
Prüfen von Schweißverbindungen aus thermoplastischen Kunststoffen - Teil 8:
Anforderungen
Essais des assemblages soudés sur produits semi-finis en thermoplastiques - Partie 8 :
Exigences
Ta slovenski standard je istoveten z: EN 12814-8:2021
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 12814-8
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2021
EUROPÄISCHE NORM
ICS 25.160.40 Supersedes EN 12814-8:2001
English Version
Testing of welded joints of thermoplastics semi-finished
products - Part 8: Requirements
Essais des assemblages soudés sur produits semi-finis Prüfen von Schweißverbindungen aus
en thermoplastiques - Partie 8 : Exigences thermoplastischen Kunststoffen - Teil 8:
Anforderungen
This European Standard was approved by CEN on 20 December 2020.
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 12814-8:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms, definitions, symbols and abbreviations . 4
3.1 Terms and definitions . 4
3.2 Symbols and abbreviations . 4
4 Materials and properties . 5
5 Destructive test methods . 5
6 Requirements . 5
6.1 General . 5
6.2 Bend test . 5
6.3 Tensile test .15
6.4 Tensile creep test .16
6.5 Peel tests.16
6.6 Macroscopic examination .16
6.7 Low temperature tensile test .16
6.8 Tensile test with waisted test specimen .17
European foreword
This document (EN 12814-8:2021) has been prepared by Technical Committee CEN/TC 249 “Plastics”,
the secretariat of which is held by NBN.
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 July 2021, and conflicting national standards shall be
withdrawn at the latest by July 2021.
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 12814-8:2001.
In comparison with the previous edition, the following technical modifications have been made:
— PVC-RI has been removed because it is no longer used in the designation;
— bend angle data for PVC-NI has been replaced by PVC-U;
— ram displacement requirements for PP-B and PP-H have been added;
— minimum short-term tensile welding factor for extrusion welding PVC-U has been added.
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.
1 Scope
This document provides the requirements for the tests made on welded thermoplastics semi-finished
products.
The selection of the appropriate test method(s) is made in accordance with the particular type and
application of welded product.
The test results depend on the conditions of manufacture for the test specimen and on the test conditions.
They can therefore only be related to the behaviour of the product or can only be used for designing a
structure, if the test conditions can be related to the service conditions.
2 Normative references
The following documents are ref
...

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This document specifies fundamental radiographic techniques with film, which enable repeatable results to be obtained economically.
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This document specifies the dimensions, the method of sampling and the preparation of the test specimens, and also the conditions for performing the peel test perpendicular to the weld in order to determine the peel resistance and the failure behaviour.
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The T-peel test as defined in Clause 5 will be used only for assessing welded sheet assemblies. This test is not applicable to welded test pieces containing sheets of different nominal thickness.
The decohesion test as defined in Clause 6 will be used only for assessing electrofusion joints with nominal thickness of pipe/fitting greater than 10 mm.
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