ISO 3917:1992
(Main)Road vehicles — Safety glazing materials — Test methods for resistance to radiation, high temperature, humidity, fire and simulated weathering
Road vehicles — Safety glazing materials — Test methods for resistance to radiation, high temperature, humidity, fire and simulated weathering
Véhicules routiers — Vitrages de sécurité — Méthodes d'essai de résistance au rayonnement, aux températures élevées, à l'humidité, au feu et aux intempéries simulées
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Standards Content (Sample)
INTERNATIONAL
STANDARD
Second edition
19924 1-01
Road vehicles - Safety glazing materials -
Test methods for resistance to radiation, high
temperature, humidity, fire and simulated
weathering
Vehicwles routiers - Vitrage de securit6 - Mkthodes d’essai de
resistance au rayonnement, aux tempbratures elevees, a l’humidite, au
feu et aux intemperies simulees
Reference number
ISO 3917:1992(E)
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ISO 3917:1992(E)
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. Esch 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, govern-
mental 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.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an Inter-
national Standard requires approval by at least 75 % of the member
bodies casting a vote.
International Standard ISO 3917 was prepared by Technical Committee
ISO/TC 22, Road vehicles, Sub-Committee SC 11, Safety glazing ma-
terials.
This second edition cancels and replaces the first edition
(ISO 3917:1976), of which it constitutes a technical revision.
0 ISO 1992
All rights reserved. No part of this publication may be reproduced or utilized in any form
or by any means, electronie or mechanical, including photocopying and microfilm, without
Permission in writing from the publisher.
ational Organization for Standardization
Intern
Case Postale 56 l CH-1211 Geneve 20 l Switzerl and
Printed in Switzerland
ii
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INTERNATIONAL STANDARD
ISO 3917:1992(E)
Road vehicles - Safety glazing materials - Test methods for
resistance to radiation, high temperature, humidity, fwe and
simulated weathering
ISO 4892-2:-21, Plastics - Methods of exposure to
1 Scope
laboratory light sources - Part 2: Xenon arc
sources.
This International Standard specifies test methods
for resistance to radiation, high temperature, hu-
ISO 4892-4:-21, Plastics - Methods of exposure to
midity, fire and simulated weathering, relating to the
laboratory light sources - Part 4: Open-f7ame car-
safety requirements for all safety glazing materials
bon arc lamp.
in a road vehicle, whatever the type of glass or the
material of which they are composed. Terms used
are in conformity to ISO 3536.
3 Test conditions
Unless otherwise specified, the tests shall be car-
ried out under the following conditions:
2 Normative references
Ambient temperature: 20 “C + 5 “C
-
The following Standards contain provisions which,
through reference in this text, constitute provisions
Atmospheric pressure: 86 kPa to 106 kPa (or
of this International Standard. At the time of publi-
860 mbar to 1 060 mbar)
cation, the editions indicated were valid. All stan-
dards are subject to revision, and Parties to
Relative humidity: (60 $- 20) %
agreements based on this International Standard
are encouraged to investigate the possibility of ap-
plying the most recent editions of the Standards in- 4 Application of tests
dicated below. Members of IEC and ISO maintain
For certain types of safety glazing material, it is not
registers of currently valid International Standards.
necessary to carry out all the tests specified in this
International Standard when the results, according
ISO 3536:1992, Road vehicles - Safety glazing ma-
to the purpose of testing, tan be predicted with cer-
terials - Vocabulary.
tainty from knowledge of the properties of the safety
material concerned.
ISO 3537:~‘1, Road vehicles - Safety glazing ma-
terials - Mechanical tests.
5 Radiation test
ISO 3538:1978, Road vehicles - Safety glasses -
Test methods for Optical popedies.
5.1 Principle
ISO 3795:1989, Road vehicles, and tractors and ma-
chinery for agriculture and forestry - Determination Determination of whether exposure to radiation over
of burning behaviour of inferior materials. an extended period of time produces any appreci-
able decrease in regular luminous transmittance or
ISO 4892:1981, Plastics - Methods of exposure to any pronounced discoloration of the safety glazing
laboratory light sources. material.
1) To be published. (Revision of ISO 3537:1975)
2) To be published.
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ISO 3917:1992(E)
5.2 Apparatus 5.5 Expression of results
The results of the luminous transmission measure-
5.2.1 Radiation Source consisting of a medium-
ment of the exposed test specimen shall be com-
pressure mercury arc lamp with a tubular quartz
pared with the values obtained for unexposed test
bulb of ozone-free type; the bulb axis shall be verti-
specimens of the Same material. The deviation shall
cal. The nominal dimensions of the lamp shalt be
be expressed as a percentage.
360 mm in length by 9,5 mm in diameter. The arc
length shall be 300 mm + 14 mm. The lamp shall be
Changes in colour shall be evaluated:
operated at 750 W + 50 w.
-
-
either by examining the test specimens placed
Any other Source of radiation which produces the
upon a white background and comparing the ex-
Same effect as the lamp specified above may be
posed area with the area which was protected
used. To check that the effects of another Source are
from the radiation;
the Same, a comparison shall be made by measur-
ing the amount of energy emitted within a wave-
-
or by measuring the trichromatic co-ordinates of
length range of 300 nm to 450 nm, all other
the test specimen before and after ageing and
wavelengths being removed by the use of suitable
by calculating the differente between two col-
filters. The alternative Source shall then be used
ours according to the CIE31 prescriptions.
with these fiIters.
In the case of safety glazing material for which there
6 High temperature test
is no satisfactory correlation between this test and
the conditions of use, it will be necessary to review
6.1 Principle
the test conditions.
Determination of whether the safety glazing material
5.2.2 Power supply transformer and capacitor
wili withstand exposure to high temperatures over
which shall be capable of supplying to the lamp
an extended period of time without its appearance
(5.2.1) a starting peak voltage of 1 100 V minimum
becoming substantially altered.
and an operating voltage of 500 V + 50 V.
-
6.2 Procedure
5.2.3 Device for mounting and rotating the test
specimens at 1 r/min to 5 r/min about the centrally
Heat one or more test specimens of at least
located radiation Source in Order to ensure even
300 mm x 300 mm to 100 OC 2 “C. Maintain this
exposure.
temperature for a period of 2 h,then allow the test
specimen(s) to cool to room temperature.
5.3 Test specimen
If the safety glazing material has both extemal sur-
faces of inorganic material, the test may be carried
The size of the test specimens shall be
out by immersing the te;t specimen vertically in
76 mm x 300 mm.
water boiiing at 100 “C ‘C for the specified pe-
riod of time, care being izken to avoid undue ther-
mal shock.
5.4 Procedure
If specimens are tut from windscreens, one edge of
Measure the regular luminous transmittance, deter-
the test specimen shall be part of an edge of the
mined according to ISO 3538, of three test speci-
Windscreen.
mens before exposure. Protect a Portion of each test
specimen from the radiation, and then Position the
6.3 Expression of results
test specimen in the test apparatus 230 mm from,
and with its 300 mm dimension parallel to, the lamp
axis. Maintain the temperature of the test specimens The resistance of the safety glazing material to high
at 45 “C + 5 “C throughout the test. temperatures shall be evaluated with reference to
-
bubbles or other defects produced in the test speci-
The surface of each test specimen which would
men by the above test.
represent the outside face of the safety glazing ma-
teriaI when mounted on the vehicle shall face the Any defects within 15 mm of an uncut edge, 25 mm
iamp. For the type of lamp specified in 5.2.1, the ex- from a tut edge or within 10 mm of any Cracks which
posure time shall be 100 h. may develop shall be disregarded.
After exposure , measure the uminous transmittan
Any te st specimen in which Cracks d evelop to an
again on each test specimen in the exposed area
extent which might confuse th e resu Hs shall be dis-
3) International Commission on Illumination.
2
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ISO 3917:1992(E)
ed an
card da noth er test specimen shall be tested in
8 Burning behaviour test
its p lace.
8.1 Principle
Determination of the behaviour of the safety glazing
7 Humidity test
material under the action of a small flame.
The method used shall be that specified in ISO 3795.
7.1 Principle
8.2 Expression of results
Determination of whether the safety glazing material
will successfully withstand the effects of humidity in
The behaviour of the
burning safety glazing ma terial
the atmosphere over an extended period of time.
shal I be eva luated by referen ce to t he burning rate.
9 Resistance to simulated weathering
7.2 Procedure
Keep one or more test specimens of at least 9.1 Principle
300 mm x 300 mm vertically for 2 weeks in a closed
Container in which the temperature is maintained at
Determination of whether safety glazing materials,
50 OC + 2 “C and the relative humidity at of which at least one surface is plastics, will suc-
(95 & 4, %. cessfully withstand exposure to simulated weather-
ing conditions.
test conditions should exclude
These
anY
condensation on test specimens.
9.2 Exposure apparatus
In the event that several test specimens are tested
Two types of light sources are included in this stan-
at the Same time, adequate spacing shall be pro-
dard, the long arc Xe
...
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