ISO 20975-1:2023

Fibre-reinforced plastic composites — Determination of laminate through-thickness properties — Part 1: Direct tension and compression tests
Autor: ISO
Código ICS: 83.120


This document specifies methods for determining the through-thickness properties (i.e. strength, modulus of elasticity, Poisson’s ratio and strain-to-failure) of fibre-reinforced plastic composites using either rectangular prism and/or waisted block specimens. The methods are suitable for use with a variety of aligned and non-aligned, continuous, and discontinuous fibre formats, with both thermoset and thermoplastic matrices, ranging from 20 mm to 40 mm in thickness.Three specimen types are described in this document. These are:—    Type I - fixed rectangular cross-section along length of specimen. It is the preferred specimen for determining elastic properties.—    Type II - waisted rectangular cross-section, variable cross-section along length of specimen. It is only suitable for determining tensile strength values and is the preferred specimen for highly anisotropic and thermoplastic materials.—    Type III - waisted rectangular cross-section, fixed cross-section along the gauge-length of specimen. It is used to provide both elastic and strength property data and is the preferred specimen for generating a full stress-strain response.Specimen types I and II are also suitable for use with unreinforced plastics but are unsuitable for use with rigid cellular materials and sandwich structures containing cellular materials.Two testing modes are covered:—    Method A – Tension—    Method B – Compression

Especificaciones de la Norma
Fecha de Publicación 24/01/2023
Título Secundario Composites plastiques renforcés de fibres — Détermination des propriétés dans l'épaisseur d'un composite stratifié — Partie 1: Essais directs de traction et de compression
Páginas Técnicas 19
Idioma Inglés