Fibre-reinforced plastic composites — Determination of open-hole compression strength

This document specifies the test method to determine the open-hole compressive strength of laminated fibre-reinforced plastic composites. The laminate is intended to be a balanced and symmetrical lay-up or be otherwise homogeneous through the thickness. This document applies to all textile diameter fibre types (carbon, glass, aramids, etc.) and matrices (e.g. thermoset, thermoplastic) that meet the requirements of this document.

This document includes three methods:

—???? method 1 (short specimen with support fixture);

—???? method 2 (short specimen without support fixture);

—???? method 3 (long specimen with support fixture as in ASTM?D6484/D6484M-09, methods A and B).

Method 1 employs an L-shaped base fixture and two end fixtures. These end fixtures are compressed between the platens of the test machine.

Method 2 employs end supports similar to the fixtures given in ISO?14126:2023, D.1. This method is useful for cyclic loading conditions test, including under fully or partly reversed loading conditions when the specimen is clamped by hydraulic grips without support fixtures

Method 3 has two types of loading methods, i.e. 3A and 3B. In method 3A, the specimen is placed within a stabilization fixture, which is then clamped by hydraulic grips. In method 3B, the specimen is placed within a stabilization fixture and then end-loaded by platens. Full details of test methods 3A and 3B are given in ASTM?D6484/D6484M-09, procedure A and procedure B, respectively.

NOTE??????????? Specimen configurations and force introduction varies for the three methods covered within this document. Results obtained using methods 1, 2 and 3 might not be equivalent for all laminates in all environments.

Edition	2025
Published Date	2025
Published By	International Standardization Organisation
Page Count	17

ISO

ISO 12507:2025

ISO 12641-1:2025

ISO 12744:2025

ISO 12815:2025

ISO 12817:2025

ISO 13031:2016/Amd 1:2025

ISO 13143:2025

ISO 13317-5:2025

ISO 13402:2025

ISO 13473-5:2025

ISO 13628-1:2025

ISO 13672:2025