oSIST prEN 12814-1:2024
(Main)Testing of welded joints of thermoplastics semi-finished products - Part 1: Bend test
Testing of welded joints of thermoplastics semi-finished products - Part 1: Bend test
This document specifies the dimensions and the method for sampling and preparing test specimens, together with the conditions for carrying out the bend test.
The result of the test is also influenced by the deformation behaviour of the tested material, the kind of welding process and the geometry of the sample.
The test is applicable to plate and tube butt jointed assemblies made from thermoplastic materials filled or unfilled, but not reinforced, irrespective of the welding process used. It is not applicable to assemblies with a wall thickness < 3 mm.
Prüfung von Schweißverbindungen aus thermoplastischen Kunststoffen - Teil 1: Biegeversuch
Dieses Dokument legt die Maße, das Verfahren für die Probenahme und die Herstellung von Probekörpern sowie die Bedingungen für die Durchführung des Biegeversuchs fest.
Das Prüfergebnis wird unter anderem durch das Verformungsverhalten des geprüften Werkstoffs, die Art des Schweißverfahrens und die Probengeometrie beeinflusst.
Die Prüfung ist unabhängig vom angewendeten Schweißverfahren auf stumpfgeschweißte Platten oder Rohrverbindungen aus thermoplastischen Kunststoffen mit oder ohne Füllstoff ohne Verstärkung anwendbar. Sie ist nicht auf Verbindungen anwendbar, deren Wanddicke weniger als 3 mm beträgt.
Essai des assemblages soudés sur produits semi-finis en thermoplastiques - Partie 1 : Essai de pliage
Le présent document spécifie les dimensions et la méthode d’échantillonnage et de préparation des éprouvettes, ainsi que les conditions d’exécution de l’essai de pliage.
Le résultat de l’essai est également influencé par le comportement à la déformation du matériau soumis à l’essai, par le procédé de soudage utilisé et par la géométrie de l’échantillon.
Cet essai est applicable aux assemblages en matières thermoplastiques chargées ou non chargées, mais non renforcées, sous forme de plaque ou de tube, soudés bout à bout, quel que soit le procédé de soudage utilisé. Il n’est pas applicable aux assemblages dont l’épaisseur de paroi est < 3 mm.
Preskušanje zvarjenih spojev plastomernih polizdelkov - 1. del: Upogibni preskusi
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2024
Preskušanje zvarjenih spojev plastomernih polizdelkov - 1. del: Upogibni preskusi
Testing of welded joints of thermoplastics semi-finished products - Part 1: Bend test
Prüfung von Schweißverbindungen aus thermoplastischen Kunststoffen - Teil 1:
Biegeversuch
Essai des assemblages soudés sur produits semi-finis en thermoplastiques - Partie 1 :
Essai de pliage
Ta slovenski standard je istoveten z: prEN 12814-1
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.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2024
ICS 25.160.40 Will supersede EN 12814-1:1999
English Version
Testing of welded joints of thermoplastics semi-finished
products - Part 1: Bend test
Essai des assemblages soudés sur produits semi-finis Prüfen von Schweißverbindungen aus
en thermoplastiques - Partie 1 : Essais de pliage thermoplastischen Kunststoffen - Teil 1: Biegeversuch
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 249.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12814-1:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Symbols and designations . 5
5 Principle of the test . 5
6 Sampling procedures . 8
7 Dimensions of test specimens and test arrangement . 8
8 Cutting of test specimens . 9
8.1 General requirement . 9
8.2 Cutting of tubes . 9
9 Mechanical testing .10
10 Testing machine .11
11 Practical determination of bend angle .11
11.1 General .11
11.2 Method 1 .11
11.3 Method 2 .11
12 Test report .12
Annex A (informative) Manual test .13
European foreword
This document (prEN 12814-1:2024) has been prepared by Committee CEN/TC 249 “Plastics”, the
secretariat of which is held by SIS.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12814-1:1999.
EN 12814-1:1999:
— in Table 4, PA-U has been added;
— in Clause 12 “Test report”, added requirement to define the initial, final, bend or the ram position and
the bend angle or ram displacement.
1 Scope
This document specifies the dimensions and the method for sampling and preparing test specimens,
together with the conditions for carrying out the bend test.
The result of the test is also influenced by the deformation behaviour of the tested material, the kind of
welding process and the geometry of the sample.
The test is applicable to plate and tube butt jointed assemblies made from thermoplastic materials filled
or unfilled, but not reinforced, irrespective of the welding process used. It is not applicable to assemblies
with a wall thickness < 3 mm.
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.
ISO 2768-1, General tolerances — Part 10: Tolerances for linear and angular dimensions without individual
tolerance indications
ISO 2818, Plastics — Preparation of test specimens by machining
ISO 5893, Rubber and plastics test equipment — Tensile, flexural and compression types (constant rate of
traverse) — Specification
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
face bend
the face corresponding to the open side of the groove is subjected to extension
3.2
root bend
the face corresponding to the root of the weld is subjected to extension
3.3
side bend
one of the faces of the test specimen corresponding to the cross section of the weld is subjected to
extension
3.4
initial angle
αi
angle between the two sides of the test specimen above the rollers before the test
3.5
final angle
α
f
angle between the two sides of the test specimen above the rollers when the test is terminated
3.6
bend angle
α
angle
...
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