Carbon-fibre-reinforced plastics — Determination of the size and aspect ratio of crushed objects

ISO 30012:2016 specifies test methods for measurement of the size and aspect ratio of crushed carbon-fibre-reinforced plastics (CFRP), especially for recycling purpose. In this International Standard the shape of crushed CFRP, the fragment, is treated as a rectangular shape, and the measurement of the long and short sides of the shape is described. It applies to fragments of the following average dimensions: - length of the long side: 5 mm to 50 mm; - width of the short side: 1 mm to 10 mm. ISO 30012:2016 provides three measuring methods, two methods are manual methods using microscope and scale and the third method is an automatic method using a measuring apparatus. Crushed CFRP obtained from thermosetting or thermoplastic resin matrices are covered by this International Standard. NOTE If the crushed CFRP contain a lot of small fragments and fine particle, it is intended to screen out by a sieve of 1 mm size before the measurement.

Plastiques renforcés de fibres de carbone — Détermination des dimensions et du rapport d'apparence d'objets broyés

General Information

Status
Published
Publication Date
28-Jan-2016
Current Stage
9093 - International Standard confirmed
Start Date
05-Oct-2021
Completion Date
05-Oct-2021
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INTERNATIONAL ISO
STANDARD 30012
First edition
2016-02-01
Carbon-fibre-reinforced plastics —
Determination of the size and aspect
ratio of crushed objects
Plastiques renforcés de fibres de carbone — Détermination des
dimensions et du rapport d’apparence d’objets broyés
Reference number
ISO 30012:2016(E)
ISO 2016
---------------------- Page: 1 ----------------------
ISO 30012:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland

All rights reserved. Unless otherwise specified, 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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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 30012:2016(E)
Contents Page

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

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

2 Normative references ......................................................................................................................................................................................1

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

4 Symbols ..........................................................................................................................................................................................................................1

5 Principle ........................................................................................................................................................................................................................2

6 Apparatus .....................................................................................................................................................................................................................2

7 Sampling ........................................................................................................................................................................................................................2

8 Measurement ...........................................................................................................................................................................................................3

8.1 General ........................................................................................................................................................................................................... 3

8.2 Method A: Manual method (stereomicroscope) ........................................................................................................ 3

8.3 Method B: Projection microscope .......................................................................................................................................... 3

8.4 Method C: Automatic shape and size measurement apparatus .................................................................... 4

9 Calculation and expression of results .............................................................................................................................................5

10 Precision ....................................................................................................................................................................................................................... 6

11 Test report ...................................................................................................................................................................................................................7

© ISO 2016 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 30012:2016(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 on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical

Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 13, Composites

and reinforcement fibres.
iv © ISO 2016 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 30012:2016(E)
Carbon-fibre-reinforced plastics — Determination of the
size and aspect ratio of crushed objects
1 Scope

This International Standard specifies test methods for measurement of the size and aspect ratio of

crushed carbon-fibre-reinforced plastics (CFRP), especially for recycling purpose. In this International

Standard the shape of crushed CFRP, the fragment, is treated as a rectangular shape, and the

measurement of the long and short sides of the shape is described. It applies to fragments of the

following average dimensions:
— length of the long side: 5 mm to 50 mm;
— width of the short side: 1 mm to 10 mm.

This International Standard provides three measuring methods, two methods are manual methods

using microscope and scale and the third method is an automatic method using a measuring apparatus.

Crushed CFRP obtained from thermosetting or thermoplastic resin matrices are covered by this

International Standard.

NOTE If the crushed CFRP contain a lot of small fragments and fine particle, it is intended to screen out by a

sieve of 1 mm size before the measurement.
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.

ISO 472, Plastics — Vocabulary
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 472 apply.

4 Symbols
W width of a CFRP fragment represented by the short side of a rectangular shape
L length of a CFRP fragment represented by the long side of a rectangular shape
average width of CFRP fragments
average length of CFRP fragments

R aspect ratio of CFRP fragments, calculated as the ratio of the length to the width of CFRP

fragment
standard deviation of length of CFRP fragments
σ()L
© ISO 2016 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 30012:2016(E)
standard deviation of width of CFRP fragments
σ()W
5 Principle

The fragments obtained from crushing CFRP laminates are impartially sampled and measured.

Most fragments of CFRP have a shape that can be approximate to a rectangle. Each fragment is

observed with an optical microscope or equivalent equipment and the width and length of the

rectangle are measured.
At least 100 fragments are measured. The
...

DRAFT INTERNATIONAL STANDARD ISO/DIS 30012
ISO/TC 61/SC 13 Secretariat: JISC
Voting begins on: Voting terminates on:
2010-08-10 2011-01-10

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION

Carbon-fibre-reinforced plastics — Determination of the size and
aspect ratio of crushed objects

Plastiques renforcés de fibres de carbone — Détermination des dimensions et du rapport de côtés des objets

écrasés
ICS 59.100.20

In accordance with the provisions of Council Resolution 15/1993 this document is circulated in

the English language only.

Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué

en version anglaise seulement.

To expedite distribution, this document is circulated as received from the committee secretariat.

ISO Central Secretariat work of editing and text composition will be undertaken at publication

stage.

Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du

secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au

Secrétariat central de l'ISO au stade de publication.

THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE

REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.

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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.
International Organization for Standardization, 2010
---------------------- Page: 1 ----------------------
ISO/DIS 30012
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Copyright notice

This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted

under the applicable laws of the user's country, neither this ISO draft nor any extract from it may be

reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, photocopying,

recording or otherwise, without prior written permission being secured.

Requests for permission to reproduce should be addressed to either ISO at the address below or ISO's

member body in the country of the requester.
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Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
ii ISO 2010 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/DIS 30012
Contents Page

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

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

2 Normative references ............................................................................................................................ 1

3 Symbols and abbreviated terms .......................................................................................................... 1

4 Principle ................................................................................................................................................. 2

5 Apparatus ............................................................................................................................................... 2

6 Sampling ................................................................................................................................................ 2

7 Measurement ......................................................................................................................................... 3

7.1 General ................................................................................................................................................... 3

7.2 Method A: Manual method (Stereomicroscope) ................................................................................ 3

7.3 Method B: Projection microscope ....................................................................................................... 3

7.4 Method C: Automatic shape and size measurement apparatus ....................................................... 3

8 Calculation and expression of results ................................................................................................ 5

9 Precision ................................................................................................................................................ 6

10 Test Report ............................................................................................................................................. 6

© ISO 2010 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/DIS 30012
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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

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.

ISO 30012 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 13, Composites

and reinforcement fibres.
iv © ISO 2010 – All rights reserved
---------------------- Page: 4 ----------------------
DRAFT INTERNATIONAL STANDARD ISO/DIS 30012
Carbon-fibre-reinforced plastics — Determination of the size
and aspect ratio of crushed objects
1 Scope

This standard specifies the test method for measurement of the size and aspect ratio of crushed carbon- fibre-

reinforced plastic (CFRP), especially for recycling purpose. In this standard the shape of crushed CFRP, the

fragment, is treated as a rectangular shape, and the measurement of the long and short side of the shape is

described. Preferable average dimensions of the fragments are;
Length of the long side: 5 mm - 50 mm
Width of the short side: 1 mm - 10 mm

This standard provides three measuring methods, two methods are manual methods using microscope and

scale and the third is an automatic method using a measuring apparatus.

Crushed CFRP’s obtained from thermosetting or thermoplastic resin matrices are covered by this standard.

NOTE If the crushed CFRP contain a lot of small fragments and fine particle, it is recommended to screen out by a

sieve of 1 mm size before the measurement.
2 Normative references

The following referenced documents are indispensable for the application of this document. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO291, Plastics — Standards atmospheres for conditioning and testing
3 Symbols and abbreviated terms
CFRP is an abbreviated te
...

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