Rigid cellular plastics -- Determination of shear properties

This document specifies a procedure of determining the shear strength of rigid cellular plastics. It also provides for the determination of shear modulus and shear strain.

Titre manque

Penjeni polimerni materiali - Ugotavljanje nateznih lastnosti

General Information

Status
Published
Publication Date
04-Sep-2018
Current Stage
6060 - International Standard published
Start Date
13-Aug-2018
Completion Date
05-Sep-2018

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SLOVENSKI STANDARD
SIST ISO 1922:2020
01-september-2020
Penjeni polimerni materiali - Ugotavljanje nateznih lastnosti
Rigid cellular plastics - Determination of shear properties
Ta slovenski standard je istoveten z: ISO 1922:2018
ICS:
83.100 Penjeni polimeri Cellular materials
SIST ISO 1922:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ISO 1922:2020
---------------------- Page: 2 ----------------------
SIST ISO 1922:2020
INTERNATIONAL ISO
STANDARD 1922
Fifth edition
2018-09
Rigid cellular plastics —
Determination of shear properties
Reference number
ISO 1922:2018(E)
ISO 2018
---------------------- Page: 3 ----------------------
SIST ISO 1922:2020
ISO 1922:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 1922:2020
ISO 1922:2018(E)
Contents Page

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

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

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

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

4 Principle ........................................................................................................................................................................................................................ 1

5 Apparatus ..................................................................................................................................................................................................................... 1

6 Dimensions of test specimens ................................................................................................................................................................ 5

6.1 General ........................................................................................................................................................................................................... 5

6.2 Single shear test specimen............................................................................................................................................................ 5

6.3 Double shear test specimen ......................................................................................................................................................... 5

7 Number of test specimens .......................................................................................................................................................................... 5

8 Conditioning and test temperature and humidity............................................................................................................. 6

9 Procedure..................................................................................................................................................................................................................... 6

10 Calculation and expression of results ............................................................................................................................................. 7

10.1 Shear strength ......................................................................................................................................................................................... 7

10.2 Shear modulus ......................................................................................................................................................................................... 7

10.3 Shear strain at fracture .................................................................................................................................................................... 7

11 Precision and bias ............................................................................................................................................................................................... 8

12 Test report ................................................................................................................................................................................................................... 8

Annex A (normative) Choice of adhesives for preparation of test specimens ...........................................................9

Bibliography .............................................................................................................................................................................................................................10

© ISO 2018 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 1922:2020
ISO 1922:2018(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 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 the following

URL: www .iso .org/iso/foreword .html.

This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 10, Cellular

plastics.

This fifth edition cancels and replaces the fourth edition (ISO 1922:2012), which has been technically

revised.
The main changes compared to the previous edition are as follows:

— title has been modified as: Rigid cellular plastics — Determination of shear properties;

— Clauses 2, 4, 5, 7, 8, 9 have been technically revised.

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.
iv © ISO 2018 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 1922:2020
INTERNATIONAL STANDARD ISO 1922:2018(E)
Rigid cellular plastics — Determination of shear properties
1 Scope

This document specifies a procedure of determining the shear strength of rigid cellular plastics. It also

provides for the determination of shear modulus and shear strain.
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 1923, Cellular plastics and rubbers — Determination of linear dimensions

ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1:

Tension/compression testing machines — Calibration and verification of the force-measuring system

3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
4 Principle

A shear stress is applied to a test specimen of defined shape by means of rigid specimen supports

bonded to the specimen.
There are two procedures:
— Procedure A, which is recommended for shear strength measurement only;

— Procedure B, which uses an extensometer or similar device to measure displacement and is, thus,

the recommended method to calculate the shear modulus and strain (and strength as well).

5 Apparatus
5.1 Test machine
5.1.1 General

A test machine capable of applying a sufficient force within the maximum displacement experienced in

the shear test.

It shall be capable of operating at a constant rate of movement of the movable head of (1 ± 0,5) mm/min

in a direction parallel to the longitudinal axis of the test specimen assembly.
© ISO 2018 – All rights reserved 1
---------------------- Page: 7 ----------------------
SIST ISO 1922:2020
ISO 1922:2018(E)

The test machine, conforming to class 1 of ISO 7500-1 shall exert a force on the test specimen, and produce

a displacement of the movable support relative to the fixed supports, having a maximum error of 1 %.

If the shear modulus and strain is required, the force and the displacement shall be simultaneously

recorded.
5.1.2 Single test specimen arrangement

The test machine shall exert longitudinal shear forces through parallel plates bonded to a single test

specimen of dimensions as in 6.2. The parallel plates shall be rigid
...

INTERNATIONAL ISO
STANDARD 1922
Fifth edition
2018-09
Rigid cellular plastics —
Determination of shear properties
Reference number
ISO 1922:2018(E)
ISO 2018
---------------------- Page: 1 ----------------------
ISO 1922:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 1922:2018(E)
Contents Page

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

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

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

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

4 Principle ........................................................................................................................................................................................................................ 1

5 Apparatus ..................................................................................................................................................................................................................... 1

6 Dimensions of test specimens ................................................................................................................................................................ 5

6.1 General ........................................................................................................................................................................................................... 5

6.2 Single shear test specimen............................................................................................................................................................ 5

6.3 Double shear test specimen ......................................................................................................................................................... 5

7 Number of test specimens .......................................................................................................................................................................... 5

8 Conditioning and test temperature and humidity............................................................................................................. 6

9 Procedure..................................................................................................................................................................................................................... 6

10 Calculation and expression of results ............................................................................................................................................. 7

10.1 Shear strength ......................................................................................................................................................................................... 7

10.2 Shear modulus ......................................................................................................................................................................................... 7

10.3 Shear strain at fracture .................................................................................................................................................................... 7

11 Precision and bias ............................................................................................................................................................................................... 8

12 Test report ................................................................................................................................................................................................................... 8

Annex A (normative) Choice of adhesives for preparation of test specimens ...........................................................9

Bibliography .............................................................................................................................................................................................................................10

© ISO 2018 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 1922:2018(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 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 the following

URL: www .iso .org/iso/foreword .html.

This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 10, Cellular

plastics.

This fifth edition cancels and replaces the fourth edition (ISO 1922:2012), which has been technically

revised.
The main changes compared to the previous edition are as follows:

— title has been modified as: Rigid cellular plastics — Determination of shear properties;

— Clauses 2, 4, 5, 7, 8, 9 have been technically revised.

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.
iv © ISO 2018 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 1922:2018(E)
Rigid cellular plastics — Determination of shear properties
1 Scope

This document specifies a procedure of determining the shear strength of rigid cellular plastics. It also

provides for the determination of shear modulus and shear strain.
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 1923, Cellular plastics and rubbers — Determination of linear dimensions

ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1:

Tension/compression testing machines — Calibration and verification of the force-measuring system

3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
4 Principle

A shear stress is applied to a test specimen of defined shape by means of rigid specimen supports

bonded to the specimen.
There are two procedures:
— Procedure A, which is recommended for shear strength measurement only;

— Procedure B, which uses an extensometer or similar device to measure displacement and is, thus,

the recommended method to calculate the shear modulus and strain (and strength as well).

5 Apparatus
5.1 Test machine
5.1.1 General

A test machine capable of applying a sufficient force within the maximum displacement experienced in

the shear test.

It shall be capable of operating at a constant rate of movement of the movable head of (1 ± 0,5) mm/min

in a direction parallel to the longitudinal axis of the test specimen assembly.
© ISO 2018 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 1922:2018(E)

The test machine, conforming to class 1 of ISO 7500-1 shall exert a force on the test specimen, and produce

a displacement of the movable support relative to the fixed supports, having a maximum error of 1 %.

If the shear modulus and strain is required, the force and the displacement shall be simultaneously

recorded.
5.1.2 Single test specimen arrangement

The test machine shall exert longitudinal shear forces through parallel plates bonded to a single test

specimen of dimensions as in 6.2. The parallel plates shall be rigid with one plate attached to the fixed

parts and the other to the movable parts of the test machine.
5.1.3 Double test specimen arrangement

The test machine shall exert longitudinal shear forces through parallel plates bonded to a double test

specimen of dimensions as in 6.3. The parallel plates shall be rigid with the outer

...

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