EN 6033:2015

Aerospace series - Carbon fibre reinforced plastics - Test method - Determination of interlaminar fracture toughness energy - Mode I - GIC

This standard specifies the procedure to determine the mode I interlaminar fracture toughness energy GIC of carbon fibre composites manufactured from unidirectional tape or woven fabric.
This standard does not give any directions necessary to meet health and safety requirements. It is the responsibility of the user of this standard to consult and establish appropriate health and safety precautions.

Luft- und Raumfahrt - Kohlenstofffaserverstärkte Kunststoffe - Prüfverfahren - Bestimmung der interlaminaren Energiefreisetzungsrate - Mode I - GIC

Diese Norm legt das Verfahren zur Bestimmung der interlaminaren Energiefreisetzungsrate GIC, Mode I, von kohlenstofffaserverstärkten Kunststoffen fest, die aus gleichgerichtetem Band oder Gewebe hergestellt wurden.
Diese Norm legt keine Anleitung fest, die für das Einhalten der Gesundheits  und Sicherheitsvorschriften erforderlich ist. Es liegt in der Verantwortung des Anwenders dieser Norm, die entsprechenden Gesundheits- und Sicherheitsvorkehrungen zu treffen.

Série aérospatiale - Matières plastiques renforcées de fibres de carbone - Méthode d'essai - Détermination de l'énergie de ténacité en rupture interlaminaire - Mode I - GIC

La présente norme spécifie la procédure pour la détermination de l’énergie de ténacité en rupture interlaminaire, mode I, GIC, des composites de fibres de carbone fabriqués à base de bandes ou de fibres textiles unidirectionnelles. La présente norme ne fournit pas d'indication nécessaire pour satisfaire les exigences d'hygiène et de sécurité. Il est de la responsabilité de l’utilisateur de la présente norme de consulter et de mettre en place les précautions d'hygiène et de sécurité appropriées.

Aeronavtika - Z ogljikovimi vlakni ojačeni polimerni materiali - Preskusna metoda - Ugotavljanje energije pri medplastni lomni žilavosti - Način I - GIC

Ta standard določa postopek za ugotavljanje energije GIC pri medplastni lomni žilavosti v okviru načina I za kompozite iz ogljikovih vlaken, izdelane iz enosmernega traku ali z vlakni ojačenega materiala.
Ta standard ne vsebuje nobenih smernic, potrebnih za izpolnjevanje zdravstvenih in varnostnih zahtev. Uporabnik tega standarda se mora posvetovati in določiti ustrezne zdravstvene in varnostne ukrepe.

General Information

• Status: Published
• Publication Date: 24-Nov-2015
• Withdrawal Date: 30-May-2016
• ICS: 49.025.40 - Rubber and plastics
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 4 - Metallic
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 25-Nov-2015
• Completion Date: 25-Nov-2015
• Ref Project: SIST EN 6033:2016 - Aerospace series - Carbon fibre reinforced plastics - Test method - Determination of interlaminar fracture toughness energy - Mode I - GIC

Relations

• Refers: EN 6034:2015 - Aerospace series - Carbon fibre reinforced plastics - Test method - Determination of interlaminar fracture toughness energy - Mode II - GIIC
• Effective Date: 28-Jan-2026
• Refers: EN 2743:2001 - Aerospace series - Fibre reinforced plastics - Standard procedures for conditioning prior to testing unaged materials
• Effective Date: 28-Jan-2026
• Refers: EN 2565:2013 - Aerospace series - Preparation of carbon fibre reinforced resin panels for test purposes
• Effective Date: 28-Jan-2026

Overview

EN 6033:2015 is a European Standard developed by CEN for the aerospace sector, focusing on the determination of interlaminar fracture toughness energy (Mode I - GIC) of carbon fibre reinforced plastics (CFRP). This test method is crucial for assessing the structural integrity and durability of aerospace-grade composites made from unidirectional tape or woven fabric. The standard outlines a reliable and repeatable procedure, supporting quality assurance and safety in aerospace engineering and manufacturing.

Key Topics

• Mode I Interlaminar Fracture Toughness (GIC): Refers to the energy required to propagate a crack between layers (plies) of a composite, specifically under peel (opening) forces perpendicular to the crack plane.
• Test Specimen Preparation: Specifies procedures for preparing CFRP specimens, including the introduction of an artificial crack and required conditioning prior to testing.
• Equipment and Apparatus: Requirements for tensile testing machines, alignment, end tabs, release films, calipers, and microscopes to ensure accuracy and repeatability.
• Testing Procedure:
  • Conditioning specimens at specified temperature and humidity.
  • Loading the specimen to propagate a crack of about 100 mm.
  • Continuous recording of load and displacement to determine energy for crack propagation.
• Result Calculation: Formula provided for calculating GIC from test data, including integration of the load-displacement curve and precise measurements of crack length and specimen width.
• Reporting: Details mandatory for traceability and repeatability, including material identification, specimen preparation details, test conditions, parameters, results, and any anomalies.

Applications

EN 6033:2015 is widely adopted in the aerospace industry for:

• Material Qualification: Verifying the fracture toughness of carbon fibre composites used in structural components of aircraft, spacecraft, and satellites.
• Research and Development: Supporting the development and analysis of new composite materials and layups by providing a robust method for assessing interlaminar strength.
• Quality Control: Routine testing during production helps assure consistency and reliability in composite strength, reducing the risk of in-service failures.
• Failure Analysis: Investigation of delamination incidents in service or during testing, aiding in root cause analysis and performance improvements.

The methodology can also be referenced for other sectors utilizing advanced composites, such as automotive, marine, and wind energy, wherever the integrity of laminated composites is a concern.

Related Standards

To conduct the test as per EN 6033:2015, several related standards are indispensable:

• EN 2565: Aerospace series - Preparation of carbon fibre reinforced resin panels for test purposes.
• EN 2743: Aerospace series - Fibre reinforced plastics - Standard procedures for conditioning prior to testing unaged materials.
• EN 6034: Aerospace series - Carbon fibre reinforced plastics - Test method - Determination of interlaminar fracture toughness energy - Mode II (GIIC).

These standards provide foundational processes for sample preparation, material conditioning, and alternative fracture testing methods, ensuring comprehensive evaluation of composite materials.

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By adhering to EN 6033:2015, organizations can ensure that carbon fibre reinforced plastics used in critical aerospace applications meet stringent safety, performance, and reliability requirements, thereby supporting overall airworthiness and material performance optimization.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2016
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8JRWDYOMDQMHHQHUJLMHSULPHGSODVWQLORPQLåLODYRVWL1DþLQ,*,&
Aerospace series - Carbon fibre reinforced plastics - Test method - Determination of
interlaminar fracture toughness energy - Mode I - GIC
Luft- und Raumfahrt - Kohlenstoffaserverstärkte Kunststoffe - Prüfverfahren -
Bestimmung der interlaminaren Energiefreisetzungsrate - Mode I - GIC
Série aérospatiale - Matières plastiques renforcées de fibres de carbone - Méthode
d'essai - Détermination de l'énergie de ténacité en rupture interlaminaire - Mode I - GIC
Ta slovenski standard je istoveten z: EN 6033:2015
ICS:
49.025.40 Guma in polimerni materiali Rubber and plastics
83.120 2MDþDQLSROLPHUL Reinforced plastics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 6033
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2015
EUROPÄISCHE NORM
ICS 49.025.40
English Version
Aerospace series - Carbon fibre reinforced plastics - Test
method - Determination of interlaminar fracture
toughness energy - Mode I - GIC
Série aérospatiale - Matières plastiques renforcées de Luft- und Raumfahrt - Kohlenstoffaserverstärkte
fibres de carbone - Méthode d'essai - Détermination de Kunststoffe - Prüfverfahren - Bestimmung der
l'énergie de ténacité en rupture interlaminaire - Mode I interlaminaren Energiefreisetzungsrate - Mode I - GIC
- GIC
This European Standard was approved by CEN on 10 August 2013.

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, 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: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 6033:2015 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle of the method . 4
5 Designation of the method . 5
6 Apparatus . 5
7 Test specimen . 5
8 Procedure. 6
9 Presentation of the results . 7
10 Test report . 7
European foreword
This document (EN 6033:2015) has been prepared by the Aerospace and Defence Industries
Association of Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of
ASD, prior to its presentation to CEN.
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 May 2016, and conflicting national standards shall be
withdrawn at the latest by May 2016.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
1 Scope
This standard specifies the procedure to determine the mode I interlaminar fracture toughness energy
G of carbon fibre composites manufactured from unidirectional tape or woven fabric.
IC
This standard does not give any directions necessary to meet health and safety requirements. It is the
responsibility of the user of this standard to consult and establish appropriate health and safety
precautions.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
1)
EN 2565, Aerospace series — Preparation of carbon fibre reinforced resin panels for test purposes
EN 2743, Aerospace series — Fibre reinforced plastics — Standard procedures for conditioning prior to
testing unaged materials
EN 6034, Aerospace series — Carbon fibre reinforced plastics — Test method — Determination of
1)
interlaminar fracture toughness energ
...