EN ISO 14125:1998/A1:2011

Fibre-reinforced plastic composites - Determination of flexural properties - Amendment 1 (ISO 14125:1998/Amd 1:2011)

2010-09-27 EMA: Track changed according to ISO database: MINOR AMENDMENT!!!

Faserverstärkte Kunststoffe - Bestimmung der Biegeeigenschaften - Änderung 1 (ISO 14125:1998/Amd 1:2011)

Diese Internationale Norm legt ein Verfahren zur Ermittlung der Biegeeigenschaften von
faserverstärkten Kunststoffen nach dem Drei- und Vierpunkt-Verfahren (Verfahren A bzw. B) fest. Es werden
Norm-Probekörper festgelegt, jedoch sind die Parameter für andere Probekörpergrößen, falls angemessen,
enthalten. Für die Prüfgeschwindigkeiten wird ein Bereich angegeben.
1.2 Das Verfahren ist nicht zur Bestimmung von Design-Parametern geeignet, darf aber für die
Werkstoffprüfung oder als Prüfung bei der Qualitätskontrolle verwendet werden.
ANMERKUNG Der Biegemodul ist beispielsweise nur ein Näherungswert für den exakten, im einachsigen Zugversuch
ermittelten Elastizitätsmodul, da beim Biegeversuch keine Korrektur für die zusätzliche Durchbiegung durch
Scherbeanspruchung erfolgt, wodurch sich ein geringerer Wert für den Biegemodul ergibt, aber es sind
Prüfumfang/Probekörper-Dickenverhältnisse zu verwenden, die diese Auswirkung minimieren. Unterschiede zwischen
Zug- und Biegeeigenschaften werden auch durch die Materialstruktur und Materiallagerung verursacht.
˜1.3 Das Verfahren ist für faserverstärkte thermoplastische und duroplastische Kunststoffe geeignet.
ISO 178, Plastics — Determination of flexural properties, gilt für Pressmassen mit Fasern, die kürzer sind als
7,5 mm. Dies ist im Allgemeinen der Fall bei Materialien, die für das Spritzgießverfahren vorgesehen sind.™
1.4 Das Verfahren ist für Probekörper geeignet, die entweder direkt in den angegebenen Maßen geformt
werden, aus dem Mittelteil eines Norm-Vielzweckprobekörpers (siehe ISO 3167) oder aus halbfertigen oder
fertigen Produkten, z. B. aus Formteilen oder Schichtstoffen, ausgearbeitet werden.

Composites plastiques renforcés de fibres - Détermination des propriétés de flexion - Amendement 1 (ISO 14125:1998/Amd 1:2011)

Z vlakni ojačeni kompozitni polimerni materiali - Ugotavljanje upogibnih lastnosti - Dopolnilo 1 (ISO 14125:1998/Amd 1:2011)

1.1 Ta mednarodni standard opisuje metode za ugotavljanje upogibnih lastnosti z vlakni ojačanih kompozitnih polimernih materialov pri tritočkovni (metoda A) in štiritočkovni (metoda B) obremenitvi. Standardni preskusni vzorci so določeni, vendar so dodani parametri za druge velikosti vzorca za uporabo po potrebi. Vključen je nabor preskusnih hitrosti.
1.2 Metoda ni primerna za ugotavljanje parametrov zasnove, lahko pa se uporabi za presajanje materialov ali kot preskus za nadzor kakovosti. OPOMBA – Upogibni modul je na primer le primerna vrednost nateznega Youngovega modula elastičnosti, saj preskus ni namenjen dodatnim upogibom zaradi strižne napetosti, kar vodi do nižjih vrednosti upogibnega modula, ampak uporablja razmerja med preskusnim razponom/debelino preskušanca, ki minimizirajo ta učinek. Razlike med nateznimi in upogibalnimi lastnostmi povzroča tudi zgradba oz. plasti materiala.
1.3 Metoda je primerna za z vlakni ojačane plastomerne in duromerne kompozitne polimerne materiale. Neojačani polimerni materiali, polimerni materiali, napolnjeni z delci, in polimerni materiali, ojačani s kratkimi vlakni (t.j. krajši od 1 mm) so zajeti v standardu ISO 178.
1.4 Metode se uporabljajo na preskušancih, ki so lahko oblikovani, da se dosežejo želene dimenzije, s strojno obdelanim osrednjim delom standardnega večnamenskega preskusnega preskušanca (glejte ISO 3167) ali strojno obdelani iz polizdelkov ali končnih izdelkov, kot so oblikovanci ali laminati.
1.5 Metoda določa prednostne dimenzije preskusnih vzorcev. Preskusi, ki se opravljajo na preskušancih drugih velikosti ali na preskušancih, ki so pripravljeni pod drugačnimi pogoji, lahko dajo rezultate, ki niso primerljivi. Na rezultate lahko vplivajo tudi drugi dejavniki, kot sta hitrost preskušanja in priprava preskušancev. Rezultati za materiale z nehomogenim prerezom ali materiale, ki so nehomogeni nad delom linearnega elastičnega odziva, veljajo le za preskušeno debelino in zgradbo. Če so potrebni primerjalni podatki, je potrebno te dejavnike natančno nadzirati in zabeležiti.

General Information

• Status: Published
• Publication Date: 31-Jan-2011
• Withdrawal Date: 30-Aug-2011
• ICS: 83.120 - Reinforced plastics
• Technical Committee: CEN/TC 249 - Plastics
• Drafting Committee: CEN/TC 249/SC 2/WG 5 - Structural properties
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 01-Feb-2011
• Completion Date: 01-Feb-2011
• Directive: 2008/68/EC - Directve 2008/68/EC of the European Parliament and of the council of 24 September 2008 on the inland transport of the dangerous goods
• Ref Project: SIST EN ISO 14125:1999/A1:2014 - Fibre-reinforced plastic composites - Determination of flexural properties - Amendment 1 (ISO 14125:1998/Amd 1:2011)

Relations

• Amends: EN ISO 14125:1998 - Fibre-reinforced plastic composites - Determination of flexural properties (ISO 14125:1998)
• Effective Date: 22-Dec-2008

Overview

EN ISO 14125:1998/A1:2011 is an essential European standard developed by CEN that amends the original ISO 14125:1998. This standard specifies the methods for determining the flexural properties of fibre-reinforced plastic (FRP) composites. Amendment 1 introduces minor updates to the normative references, test procedures, and calculation methods to enhance precision and applicability, particularly for materials with low failure strain such as high-modulus carbon-fibre-reinforced plastics.

Flexural properties, including flexural strength and flexural modulus, are critical parameters for assessing the mechanical behavior of FRP composites under bending loads. This standard provides a reliable and standardized method to evaluate these properties, ensuring consistency and comparability of test results across different labs and manufacturers.

Key Topics

• Scope and Purpose: Defines the determination methods for flexural strength, flexural modulus, and strain in fibre-reinforced plastic composites.

• Normative References: Updated references to vital related standards such as ISO 178 (plastics flexural properties), ISO 291 (conditioning), and ISO 5893 (test equipment specifications), ensuring aligned testing methodology.

• Test Specimen Preparation: Guidelines for producing and machining test specimens, referencing ISO 1268 and ISO 2818 to ensure standardization of sample geometry and surface finish.

• Flexural Modulus Calculation: Introduces adjusted strain ranges for calculating flexural modulus, especially for composites with failure strains below 0.0025, like high-modulus carbon fibre composites, improving accuracy.

• Test Execution: Specifies measurement techniques for deflections corresponding to defined flexural strains to calculate modulus, adapting procedures for materials with varying mechanical properties.

• Statistical Analysis: Refers to ISO 2602 for statistical interpretation of test data, enabling users to estimate the mean values and confidence intervals, enhancing data reliability.

Applications

• Material Testing Laboratories: Provides standardized testing procedures for researchers and quality control laboratories to characterize FRP composites.

• Composite Manufacturers: Assists producers of fibre-reinforced plastics in verifying product performance against industry benchmarks and customer specifications.

• Aerospace and Automotive Industries: Enables assessment of structural components made from composite materials where precise flexural performance data is critical for safe and efficient design.

• Construction and Engineering: Supports the evaluation of composite materials used for load-bearing applications, ensuring materials meet required flexural strength and stiffness criteria.

• Research and Development: Facilitates development of innovative composite materials with tailored mechanical properties for advanced applications by providing consistent test protocols.

Related Standards

• ISO 178: Plastics - Determination of flexural properties, providing broader context for flexural testing beyond fibre-reinforced composites.

• ISO 1268 (all parts): Methods for producing fibre-reinforced plastic test plates, foundational for specimen preparation.

• ISO 291: Standard atmospheres for conditioning and testing plastics, ensuring consistent environmental conditions during testing.

• ISO 5893: Specifications for tensile, flexural, and compression test equipment, ensuring measurement accuracy.

• ISO 2602: Statistical interpretation of test results, underpinning reliable data analysis practices.

• ISO 2818: Preparation of test specimens by machining, critical to obtaining precise test samples.

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EN ISO 14125:1998/A1:2011 integrates refined procedures and updated references to improve the assessment of flexural properties in fibre-reinforced plactic composites. Adhering to this standard ensures high-quality, reproducible, and precise measurement data necessary for engineering design, quality assurance, and research innovation in composite materials. For professionals in materials science, testing laboratories, and manufacturing sectors, compliance with this amendment supports conformity with European and international best practices.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2014
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Fibre-reinforced plastic composites - Determination of flexural properties - Amendment 1
(ISO 14125:1998/Amd 1:2011)
Faserverstärkte Kunststoffe - Bestimmung der Biegeeigenschaften - Änderung 1 (ISO
14125:1998/Amd 1:2011)
Composites plastiques renforcés de fibres - Détermination des propriétés de flexion -
Amendement 1 (ISO 14125:1998/Amd 1:2011)
Ta slovenski standard je istoveten z: EN ISO 14125:1998/A1:2011
ICS:
83.120 2MDþDQLSROLPHUL Reinforced plastics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 14125:1998/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2011
ICS 83.120
English Version
Fibre-reinforced plastic composites - Determination of flexural
properties - Amendment 1 (ISO 14125:1998/Amd 1:2011)
Composites plastiques renforcés de fibres - Détermination Faserverstärkte Kunststoffe - Bestimmung der
des propriétés de flexion - Amendement 1 (ISO Biegeeigenschaften - Änderung 1 (ISO 14125:1998/Amd
14125:1998/Amd 1:2011) 1:2011)
This amendment A1 modifies the European Standard EN ISO 14125:1998; it was approved by CEN on 31 January 2011.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant 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 amendment 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14125:1998/A1:2011: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 14125:1998/A1:2011) has been prepared by Technical Committee ISO/TC 61
"Plastics " in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by
NBN.
This Amendment to the European Standard EN ISO 14125:1998 shall be given the status of a national
standard, either by publication of an identical text or by endorsement, at the latest by August 2011, and
conflicting national standards shall be withdrawn at the latest by August 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 14125:1998/Amd 1:2011 has been approved by CEN as a EN ISO 14125:1998/A1:2011
without any modification.
INTERNATIONAL ISO
STANDARD 14125
First edition
1998-03-01
AMENDMENT 1
2011-02-01
Fibre-reinforced plastic composites —
Determination of flexural properties
AMENDMENT 1
Composites plastiques renforcés de fibres — Détermination
des propriétés de flexion
AMENDEMENT 1
Reference number
ISO 14125:1998/Amd.1:2011(E)
©
ISO 2011
ISO 14125:1998/Amd.1:2011(E)
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