EN ISO 14125:1998
(Main)Fibre-reinforced plastic composites - Determination of flexural properties (ISO 14125:1998)
Fibre-reinforced plastic composites - Determination of flexural properties (ISO 14125:1998)
This International Standard specifies a method for determining the flexural properties of fibre-reinforced plastic composites under three-point (Method A) and four-point (Method B) loading. Standard test specimens are defined but parameters are included for alternative specimen sizes for use where appropriate. A range of testing speeds is included.
Faserverstärkte Kunststoffe - Bestimmung der Biegeeigenschaften (ISO 14125:1998)
1.1 Diese Internationale Norm legt ein Verfahren zur Ermittlung der Biegeeigenschaften von faserverstärkten Kunststoffen nach dem Drei- und Vierpunkt-(Verfahren A bzw. B) fest. Es werden Norm-Probekörper festgelegt, jedoch sind die Parameter für andere Probekörpergrößen, falls angemessen, enthalten. Für die Prüfgeschwindigkeiten wird ein Bereich angegeben. 1.2 Das Verfahren ist nicht zur Bestimmung von Design-Parametern geeignet, darf aber für die Werkstoffprüfung oder als Prüfung bei der Qualitätskontrolle verwendet werden.
Composites plastiques renforcés de fibres - Détermination des propriétés de flexion (ISO 14125:1998)
La présente norme internationale prescrit une méthode pour la détermination des propriétés en flexion des composites plastiques renforcés de fibres par la méthode de chargement en trois points (méthode A) ou en quatre points (méthode B). Des éprouvettes normalisées sont définies mais des paramètres sont inclus pour d'autres dimensions d'éprouvettes, le cas échéant. Une gamme de vitesses d'essais est incluse.
Z vlakni ojačeni kompozitni polimerni materiali – Določevanje upogibnih lastnosti (ISO 14125:1998)
1.1 Ta mednarodni standard opisuje metode za ugotavljanje upogibnih lastnosti z vlakni ojačanih kompozitnih polimernih materialov pri tritočkovni (metoda A) in štiritočkovni (metoda B) obremenitvi. Standardni preskusni vzorci so določeni, vendar so dodani parametri za druge velikosti vzorca za uporabo po potrebi. Vključen je nabor preskusnih hitrosti.
1.2 Metoda ni primerna za ugotavljanje parametrov zasnove, lahko pa se uporabi za presajanje materialov ali kot preskus za nadzor kakovosti. OPOMBA – Upogibni modul je na primer le primerna vrednost nateznega Youngovega modula elastičnosti, saj preskus ni namenjen dodatnim upogibom zaradi strižne napetosti, kar vodi do nižjih vrednosti upogibnega modula, ampak uporablja razmerja med preskusnim razponom/debelino preskušanca, ki minimizirajo ta učinek. Razlike med nateznimi in upogibalnimi lastnostmi povzroča tudi zgradba oz. plasti materiala.
1.3 Metoda je primerna za z vlakni ojačane plastomerne in duromerne kompozitne polimerne materiale. Neojačani polimerni materiali, polimerni materiali, napolnjeni z delci, in polimerni materiali, ojačani s kratkimi vlakni (t.j. krajši od 1 mm) so zajeti v standardu ISO 178.
1.4 Metode se uporabljajo na preskušancih, ki so lahko oblikovani, da se dosežejo želene dimenzije, s strojno obdelanim osrednjim delom standardnega večnamenskega preskusnega preskušanca (glejte ISO 3167) ali strojno obdelani iz polizdelkov ali končnih izdelkov, kot so oblikovanci ali laminati.
1.5 Metoda določa prednostne dimenzije preskusnih vzorcev. Preskusi, ki se opravljajo na preskušancih drugih velikosti ali na preskušancih, ki so pripravljeni pod drugačnimi pogoji, lahko dajo rezultate, ki niso primerljivi. Na rezultate lahko vplivajo tudi drugi dejavniki, kot sta hitrost preskušanja in priprava preskušancev. Rezultati za materiale z nehomogenim prerezom ali materiale, ki so nehomogeni nad delom linearnega elastičnega odziva, veljajo le za preskušeno debelino in zgradbo. Če so potrebni primerjalni podatki, je potrebno te dejavnike natančno nadzirati in zabeležiti.
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 14125:1999
01-maj-1999
=YODNQLRMDþHQLNRPSR]LWQLSROLPHUQLPDWHULDOL±'RORþHYDQMHXSRJLEQLKODVWQRVWL
,62
Fibre-reinforced plastic composites - Determination of flexural properties (ISO
14125:1998)
Faserverstärkte Kunststoffe - Bestimmung der Biegeeigenschaften (ISO 14125:1998)
Composites plastiques renforcés de fibres - Détermination des propriétés de flexion (ISO
14125:1998)
Ta slovenski standard je istoveten z: EN ISO 14125:1998
ICS:
83.120 2MDþDQLSROLPHUL Reinforced plastics
SIST EN ISO 14125:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 14125:1999
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SIST EN ISO 14125:1999
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SIST EN ISO 14125:1999
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SIST EN ISO 14125:1999
INTERNATIONAL ISO
STANDARD 14125
First edition
1998-03-01
Fibre-reinforced plastic composites —
Determination of flexural properties
Composites plastiques renforcés de fibres — Détermination des propriétés
de flexion
A
Reference number
ISO 14125:1998(E)
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SIST EN ISO 14125:1999
ISO 14125:1998(E)
Contents Page
.............................................................................
1 Scope 1
2 Normative references. 2
3 Principle. 2
4 Definitions . 3
5Apparatus . 4
.
6 Test specimens 6
7 Number of test specimens . 8
8 Conditioning . 8
9 Procedure . 8
10 Calculation and expression of results . 9
.
11 Precision 12
12 Test report . 13
Annex A (normative) Other test specimens . 14
(normative)
Annex B Large-deflection corrections —
15
Calculation and expression of results.
© ISO 1998
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 central@iso.ch
X.400 c=ch; a=400net; p=iso; o=isocs; s=central
Printed in Switzerland
ii
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SIST EN ISO 14125:1999
©
ISO ISO 14125:1998(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.
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 14125 was prepared by Technical Committee
ISO/TC 61, Plastics, Subcommittee SC 13, Composites and reinforcement
fibres.
Annexes A and B form an integral part of this International Standard.
iii
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SIST EN ISO 14125:1999
©
ISO 14125:1998(E) ISO
Introduction
This standard is based on ISO 178 but deals with fibre-reinforced plastic
composites. As such it retains the test conditions relevant for glass-fibre-
reinforced systems. The test conditions are extended from ISO 178 to
include both three-point (Method A) and four-point (Method B) loading
geometries, and to include conditions for composites based on newer
fibres such as carbon and aramid fibres.
Other source documents consulted include ASTM D 790 (four-point
loading), prEN 2562 (test conditions), CRAG 200 and JIS K 7074 (use of
shims for four-point loading, figure 6). The overall specimen length for four-
point loading is the same as for three-point loading.
The scope
...
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