ISO 19927:2018

Fibre-reinforced plastic composites — Determination of interlaminar strength and modulus by double beam shear test

This document specifies a procedure for determining the interlaminar strength, and modulus, by double beam shear (DBS) tests of fibre-reinforced plastic composites. The method is suitable for use with glass or carbon fibre-reinforced plastic composites with thermoset matrices, providing an acceptable interlaminar failure is obtained. This document only applies to laminate with a symmetrical and balanced lay‐up as it avoids bending/twisting or bending/extension coupling deformations (see 6.2). The preferred lay-up is unidirectional, with fibres aligned along the specimen (axial) length. The suitability of the test for specific lay-ups, matrices and fibres (e.g. natural) are assessed by trial tests to ensure the correct delamination failures are obtained.

Composites plastiques renforcés de fibres — Détermination de la résistance interlaminaire et du module par un double essai de cisaillement de faisceau

General Information

• Status: Published
• Publication Date: 12-Aug-2018
• ICS: 83.120 - Reinforced plastics
• Technical Committee: ISO/TC 61/SC 13 - Composites and reinforcement fibres
• Drafting Committee: ISO/TC 61/SC 13 - Composites and reinforcement fibres
• Current Stage: 9060 - Close of review
• Start Date: 04-Mar-2029

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 19927
First edition
2018-08
Fibre-reinforced plastic composites —
Determination of interlaminar
strength and modulus by double beam
shear test
Composites plastiques renforcés de fibres — Détermination de
la résistance interlaminaire et du module par un double essai de
cisaillement de faisceau
Reference number
ISO 19927:2018(E)
©
ISO 2018

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ISO 19927:2018(E)

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ii © ISO 2018 – All rights reserved

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ISO 19927:2018(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 3
5 Apparatus . 4
6 Test specimens. 6
6.1 Shape and dimensions . 6
6.1.1 Preferred specimen size . 6
6.1.2 Alternative specimen size . 7
6.2 Preparation of specimens . 7
6.2.1 General. 7
6.2.2 Machining the test specimens . 7
6.3 Checking the test specimens . 7
7 Number of test specimens . 7
8 Conditioning . 7
9 Procedure. 7
...