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ISO/CD 19927

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

General information

30.60     May 28, 2025

ISO

ISO/TC 61/SC 13

International Standard

Scope

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.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 19927:2018

NOW

IN_DEVELOPMENT
ISO/CD 19927
30.60 Close of voting/ comment period
May 28, 2025