Composites and reinforcements fibres — Carbon fibre reinforced plastics (CFRPs) and metal assemblies — Determination of the cross tension strength

This document specifies a method for determining the cross tensional strength of the bonded plates of carbon fibre reinforced plastics (CFRPs) to metal assemblies, with a standard specimen loaded in cross tension and under specified conditions of preparation, conditioning and testing. This method is intended for testing those bonded plates used in bonding carbon fibre reinforced plastics (CFRPs) to metal assemblies.

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Status
Published
Publication Date
31-Mar-2022
Current Stage
4099 - Full report circulated: DIS approved for registration as FDIS
Start Date
12-Oct-2021
Completion Date
12-Oct-2021
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ISO 24360:2022 - Composites and reinforcements fibres — Carbon fibre reinforced plastics (CFRPs) and metal assemblies — Determination of the cross tension strength Released:4/1/2022
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INTERNATIONAL ISO
STANDARD 24360
First edition
2022-04
Composites and reinforcements
fibres — Carbon fibre reinforced
plastics (CFRPs) and metal assemblies
— Determination of the cross tension
strength
Reference number
ISO 24360:2022(E)
© ISO 2022
---------------------- Page: 1 ----------------------
ISO 24360:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below

or ISO’s member body in the country of the requester.
ISO copyright office
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO 2022 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 24360:2022(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction .................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2  Normative reference ........................................................................................................................................................................................1

3  Terms and definitions .................................................................................................................................................................................... 1

4 Test specimen .......................................................................................................................................................................................................... 2

5 Test equipment and testing procedure ........................................................................................................................................ 4

6 Test report .................................................................................................................................................................................................................. 8

Annex A (informative) Optimization of bond area for the reduction in CTS value scatterings ............9

iii
© ISO 2022 – All rights reserved
---------------------- Page: 3 ----------------------
ISO 24360:2022(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 13,

Composites and reinforcement fibres.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html.
© ISO 2022 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 24360:2022(E)
Introduction

This document specifies a method for determining the cross tensional strength of the bonded plates

of carbon fibre reinforced plastics (CFRPs) to metal assemblies, with a standard specimen loaded in

cross tension and under specified conditions of preparation, conditioning and testing. This method is

intended for testing only those bonded plates used in bonding carbon fibre reinforced plastics (CFRPs)

to metal assemblies.

The potential benefits to the users of CFRP-metal assemblies of implementing the cross tensional

strength of the bonded plates of carbon fibre reinforced plastics (CFRPs) to metal assemblies based on

this document are:

a) expanding CFRP applications to the fields of the combinations with metallic components;

b) the detection or the prevention of physical properties loss - such as ion migration and time-related

degradation in sealant film, injected calking layer and glass fibre reinforced plastics (GFRPs) layer;

c) demonstrating the conformity to specified conditions for type certification requirements in the

engineering such as aircraft developments;

d) evaluating the procedures for maintenance, repair and overhaul (MRO) in the engineering

operations such of CFRP aircrafts.
It is not the intent of this document to imply the need for:
1) omitting relevant field tests for CFRP related engineering;

2) generally specifying the dimensions of test specimen to represent CFRPs related bonded or

fastened structures;

3) superimposing test results for specific applications of the parameters that exceed the range of this

document.
© ISO 2022 – All rights reserved
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 24360:2022(E)
Composites and reinforcements fibres — Carbon fibre
reinforced plastics (CFRPs) and metal assemblies —
Determination of the cross tension strength

SAFETY STATEMENT — Persons using this document should be familiar with normal laboratory

practice, if applicable. This document does not purport to address all of the safety problems, if

any, associated with its use. It is the responsibility of the user to establish appropriate safety and

health practices and to ensure compliance with any regulatory conditions. It is recognized that

some of the materials permitted in this document might have a negative environmental impact.

As technological advances lead to more acceptable alternatives for such materials, they will be

eliminated to the greatest extent possible. At the end of the test, care should be taken to dispose

of all waste in an appropriate manner.
1 Scope

This document specifies a method for determining the cross tensional strength of the bonded plates

of carbon fibre reinforced plastics (CFRPs) to metal assemblies, with a standard specimen loaded in

cross tension and under specified conditions of preparation, conditioning and testing. This method is

intended for testing those bonded plates used in bonding carbon fibre reinforced plastics (CFRPs) to

metal assemblies.
2  Normative reference

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 7500-1, Metallic materials — Calibration and verificat
...

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