SIST EN ISO 13997:2000

SLOVENSKI STANDARD
SIST EN ISO 13997:2000
01-februar-2000
Varovalna obleka – Mehanske lastnosti – Ugotavljanje odpornosti proti urezu z
ostrimi predmeti (ISO 13997:1999)
Protective clothing - Mechanical properties - Determination of resistance to cutting by
sharp objects (ISO 13997:1999)
Schutzkleidung - Mechanische Eigenschaften - Bestimmung des Widerstandes gegen
Schnitte mit scharfen Gegenstäden (ISO 13997:1999)
Vetements de protection - Propriétés mécaniques - Détermination de la résistance a la
coupure par des objets tranchants (ISO 13997:1999)
Ta slovenski standard je istoveten z: EN ISO 13997:1999
ICS:
13.340.10 Varovalna obleka Protective clothing
SIST EN ISO 13997:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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INTERNATIONAL ISO
STANDARD 13997
First edition
1999-08-15
Protective clothing — Mechanical
properties — Determination of resistance to
cutting by sharp objects
Vêtements de protection — Propriétés mécaniques — Détermination de la
résistance à la coupure par des objets tranchants
A
Reference number
ISO 13997:1999(E)

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ISO 13997:1999(E)
Contents
1 Scope .1
2 Normative reference .1
3 Terms and definitions .1
4 Requirements.1
5 Sampling.2
6 Test method.2
6.1 Principle.2
6.2 Test apparatus .2
6.3 Test procedure.3
7 Test report .5
Annex A (informative) Specification of a cut test.6
Annex B (informative) Instrumentation meeting the requirements of this International Standard.8
©  ISO 1999
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet iso@iso.ch
Printed in Switzerland
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© ISO
ISO 13997:1999(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
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.
International Standard ISO 13997 was prepared by Technical Committee ISO/TC 94, Personal safety — Protective
clothing and equipment, Subcommittee SC 13, Protective clothing.
Annexes A and B of this International Standard are for information only.
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© ISO
ISO 13997:1999(E)
Introduction
Although textiles, composites, leather, rubbers and reinforced materials may resist cutting by sharp edges in
different ways, a test method for evaluating the resistance to cut of materials in protective clothing needs to be
applicable to all materials. The test described in this International Standard provides a method that allows
calculations of the downwards (normal) force required to cause a blade drawn across the sample for a fixed
distance to cut through the specimen.
The performance of protective clothing materials may be classified using the numerical values obtained from this
test.
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INTERNATIONAL STANDARD  © ISO ISO 13997:1999(E)
Protective clothing — Mechanical properties — Determination of
resistance to cutting by sharp objects
1 Scope
This International Standard specifies a cut test method, and related calculations, for use on materials and as-
semblies designed for protective clothing. The test determines resistance to cutting by sharp edges, such as knives,
sheet metal parts, swarf, glass, bladed tools and castings.
This test does not provide data on the resistance to penetration by pointed objects such as needles and thorns. The
test described in this International Standard is not considered suitable for testing materials made from chain mail
and metal plates. The text of this International Standard does not include provisions for the safeguard of the
operator.
2 Normative reference
The following normative document contains provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, this publication do
not apply. However, parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent edition of the normative document indicated below. For undated references,
the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of
currently valid International Standards.
ISO 139:1973, Textiles — Standard atmospheres for conditioning and testing.
3 Terms and definitions
For the purposes of this International Standard, the following terms and definitions apply.
3.1
cut-through
event which has occurred when the blade edge first contacts the conducting material below the test specimen
3.2
cutting force
calculated force that would be required to be applied to a blade of standard sharpness to just cut through a material
in a blade stroke of length 20 mm
3.3
cutting stroke length
distance the cutting edge travels before cut-through occurs
4 Requirements
This International Standard describes a method of test for materials and products. When it is cited as a test method
in a materials or product standard, that standard shall contain the necessary information to permit the application of
ISO 13997 to the particular product. The standard citing ISO 13997 shall include at least the following:
a) a normative reference to ISO 13997;
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© ISO
ISO 13997:1999(E)
a description of the samples to be tested, their method of preparation, and pretreatment, if any, and the
b)
permitted size and orientation range of the specimens prepared for the samples;
c) details of the clamping and stretching method to be used with the specimens;
d) the number of tests to be performed;
e) details of any deviation from the method described in ISO 13997;
f) details of the format and content of the test report to be provided;
g) the performance requirements for the product and associated "level". The performance required shall be given
as the minimum cutting force.
Information and guidance on using ISO 13997 in a product standard are given in annex A.
5 Sampling
5.1  Specimens shall be taken from regions of the sample product representative of the range of construction
present in protective areas. Specimens shall be taken from positions representative of the variations in the quality of
the material present.
5.2  Specimens from woven, knitted and other orientated materials shall be prepared so that test cuts are made at
an angle of (45 ± 10)° to the machine direction of the material. Unoriented materials, or those in which the machine
direction is uncertain, shall be tested in two directions at 45° to each other. Specimens from particular materials or
products may be tested at other orientations specified by a standard citing ISO 13997.
5.3  Unless otherwise specified, specimen dimensions shall not be less than 25 mm ´ 100 mm, with the intended
cut orientation at 90° to the long axis. The smallest specimen on which single cuts are made shall not be less than
25 mm ´ 25 mm.
5.4  Specimens shall be conditioned in accordance with ISO 139. Testing shall be carried out in the conditioning
environment or within 5 min of withdrawing the specimens from the conditioning environment.
6 Test method
6.1 Principle
The cut resistance of a material is its ability to resist being cut through by a blade. This is measured in a machine in
which a sharp blade is drawn across a specimen. The cuts are achieved in blade movements of 3 mm to 50 mm
length when a range of forces are applied to the blade normal to the specimen surface. The cut resistance of a
sample material is expressed as the cutting force that is required to be applied to a blade of standard sharpness to
just cut through the material in a 20 mm blade stroke. The value of the cutting force may be used to classify
materials.
Any apparatus can be used that can maintain a constant force between the cutting edge and the specimen, and can
accurately measure the distance the blade travels to cut through the specimen. Annex B (informative) describes
instrumentation that meets these requirements.
6.2 Test apparatus
The apparatus shall have the following components.
6.2.1  Rigid framework that supports the constituent parts when a force of up to 200 N is exerted between the
cutting edge and the specimen.
6.2.2  Force application system to move the specimen holder towards the blade, or the blade towards the
specimen holder during operation of the machine such that the force between the cutting edge and the specimen is
constant ± 5 %.
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© ISO
ISO 13997:1999(E)
The force shall be variable between 1,0 N and 200 N. The force may be applied to the blade holder or to the
specimen holder.
6.2.3  Specimen holder, with surface made of metal on which the specimen is mounted.
The specimen mounting area shall be curved with a radius of (38 ± 0,5) mm. The length of the mounting area shall
be greater than 110 mm and the width across the curvature shall be greater than or equal to 32 mm. The mounting
of the specimen holder shall provide for multiple cuts to be made on single specimens at minimum intervals of
10 mm.
6.2.4  Blades, made of stainless steel with a hardness greater than 45 HRC.
Blades shall be (1,0 ± 0,5) mm thick and ground to a bevel width of (2,5 ± 0,2) mm along a straight edge. This is an
included angle of approximately 22° at the cutting edge. Blades shall have a cutting edge length greater than 65 mm
1)
and blades shall be more than 18 mm wide.
6.2.5  Blade holder, capable of holding the blade rigidly and with minimum distortion so that (12,0 ± 0,5) mm of the
blade width is exposed.
The blade shall be held so that it is orientated across the curvature of the specimen holder with the plane of the
blade at (90 ± 2)° to the long axis of the specimen holder.
6.2.6  Cutting-motion system to move the specimen holder and cutting edge relative to each other such that the
cutting edge moves across the specimen at (90 ± 2)° to the long axis of the specimen holder at a velocity of
(2,5 ± 0,5) mm/s.
A screw-thread drive system has been found satisfactory. The bearings in the system shall provide smooth
movement with restricted lateral motion. The maximum transverse movement of the cutting edge when it is
stationary and not in contact with a specimen shall be 0,5 mm when a force of (5 ± 0,5) N is applied alternately to
the two sides of the blade at (90 ± 5)° to the long axis of the blade.
6.2.7  Cut-stroke length measurement system, to measure the length of the cutting edge that is drawn across
the specimen to completely cut through it, accurate to 0,1 mm.
The distance to be measured is the blade movement from its initial stationary position in contact with the specimen
to the point at which cut-through occurs and the first electrical contact between the blade and the specimen holder
takes place.
6.3 Test procedure
6.3.1 Specimen mounting
Mount specimens with a piece of double-sided adhesive tape of width (50 ± 2) mm. Place a conductive material
(e.g. aluminium, copper) of width (10 – 2) mm and not thicker than 0,03 mm on top of the adhesive tape in its centre
and connect it to the metal specimen holder to ensure good electrical contact. Lay specimens on the tape on the
holder so that they are fixed without stretching.
Alternatively
...