ISO 19587:2021 Fine ceramics (advanced ceramics, advanced technical ceramics) — Mechanical properties of ceramic composites at elevated temperature in air atmospheric pressure — Determination of in-plane shear strength.
1 Scope
This document specifies a method for the determination of in-plane shear strength of continuous fibre-reinforced ceramic composites at elevated temperature in air or inert atmosphere by the asymmetric four-point bending test on double-edge notched specimens. The shear strength in plane (1,2) can be evaluated, where direction 1 is that of the greater fraction of reinforcement and direction 2 is perpendicular to direction 1. Methods for test piece fabrication, testing modes and rates (load or displacement rate), data collection and reporting procedures are addressed.
This document applies to all ceramic matrix composites with continuous fibre-reinforcement:
unidirectional (ID), bidirectional (2D) and tridirectional (xD, with 2 <x  3).
This document is for material development, material comparison, quality assurance, characterization, reliability and design data generation.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3611, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for external measurements — Design and metrological characteristics
ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1:
Tension/compression testing machine.s — Calibration and verification of the force-measuring system
ISO 19634, Fine ceramics (advanced ceramics, advanced technical ceramics) — Ceramic composites — Not ations and symbols
ISO 20507, Fine ceramics (advanced ceramics, advanced technical ceramics) — Vocabulary
IEC 60584-1, Thermocouples — Part 1: Reference tables
IEC 60584-2, Thermocouples — Part 2: Tolerances
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 19634 and ISO 20507 and the following apply.
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