DD CEN TS 15880-2009 PDF

Full title and description

Advanced technical ceramics - Ceramic composites - Determination of the fibre/matrix interfacial frictional shear stress at room temperature by a single fibre push-out method (CEN/TS 15880:2009). This CEN Technical Specification specifies a single‑fibre push‑out (indentation) method for measuring the interfacial frictional shear stress (fibre/matrix bond characteristics) in continuous fibre‑reinforced ceramic matrix composites at room temperature.

Abstract

CEN/TS 15880:2009 defines a laboratory procedure using a displacement‑controlled indentor to push an individual fibre through the surrounding matrix while recording force versus top‑fibre displacement. From the resulting force–displacement curve the interfacial frictional shear stress (τf) is determined (commonly from the plateau force corresponding to steady sliding). The specification covers specimen geometries, preparation, apparatus, measurement methods, validity criteria, calculations and reporting for unidirectional, bidirectional and tridirectional continuous fibre reinforcements.

General information

• Status: Published.
• Publication date: 14 June 2009.
• Publisher: CEN (European Committee for Standardization); nationally implemented/adopted by member bodies (example: SIST national publication).
• ICS / categories: 81.060.30 (Advanced ceramics).
• Edition / version: CEN Technical Specification CEN/TS 15880:2009 (2009 edition, technical specification).
• Number of pages: 15 pages (English national implementation preview indicates 15 pages).

Scope

This Technical Specification applies to continuous fibre‑reinforced ceramic matrix composites (unidirectional 1D, bidirectional 2D and tridirectional xD, with 2 < x ≤ 3). It specifies a single‑fibre push‑out (indentation) test at room temperature to determine the fibre/matrix interfacial frictional shear stress, including specimen types (thin slab, wedge, small‑angle specimens), specimen preparation, apparatus and data analysis required to obtain valid interfacial parameters.

Key topics and requirements

• Principle and measurement: displacement‑controlled indentor pushes an individual fibre; record force vs. top‑fibre displacement and extract τf from characteristic features (plateau/steady sliding) of the curve.
• Specimen geometries and preparation: thin slab, wedge and small‑angle specimens; fibres must be perpendicular to surface; polished, scratch‑free surfaces; recommended thickness guidance.
• Apparatus requirements: displacement‑controlled indentation tester, suitable load cell, optical/video alignment and vibration‑free stage; recommended indentor (flat tip, diameter smaller than fibre, material harder than fibre).
• Measurements and accuracy: measurement of fibre diameter/perimeter and specimen thickness; measurement tolerances and planimetry for non‑circular fibres.
• Test validity and calculations: validity criteria for force–displacement curves, selection of fibres, calculation methods based on embedded length and plateau force, and required test reporting items.

Typical use and users

Materials scientists, composite engineers, R&D teams, failure‑analysis and quality‑control laboratories, and test houses working on advanced technical ceramics and ceramic matrix composites use this specification to characterise fibre/matrix bond behavior, provide data for modelling and design (load transfer and damage tolerance), and support development of high‑temperature and high‑performance components (for example in aerospace, energy and industrial applications).

Related standards

Standards and documents commonly referenced alongside CEN/TS 15880:2009 include notations and symbols for advanced technical ceramics (for example CEN/TR guidance documents) and measurement references such as ISO 3611 for external measurement tools. National implementations/adoptions (e.g. SIST in Slovenia) exist for the CEN/TS. Users should consult related CEN and ISO documents on test specimen preparation, microscopy and measurement accuracy when applying the method.

Keywords

single fibre push‑out, push‑out method, indentation test, ceramic matrix composites (CMC), fibre/matrix interface, interfacial frictional shear stress, τf, advanced technical ceramics, specimen preparation, test method.

FAQ

Q: What is this standard?

A: CEN/TS 15880:2009 is a CEN Technical Specification that defines a single‑fibre push‑out (indentation) laboratory method to measure the interfacial frictional shear stress between fibre and matrix in continuous fibre‑reinforced ceramic matrix composites at room temperature.

Q: What does it cover?

A: It covers the test principle, specimen geometries and preparation, required apparatus and measurement methods, validity criteria, calculation procedures to obtain interfacial shear stress, and reporting requirements for the single‑fibre push‑out test. Applicable to 1D, 2D and 3D reinforcement architectures.

Q: Who typically uses it?

A: Materials researchers, composite and mechanical engineers, testing and calibration laboratories, and R&D groups developing or characterising ceramic matrix composites—particularly where interface behaviour (bond or sliding) is important for design, modelling or failure analysis.

Q: Is it current or superseded?

A: The document is published as CEN/TS 15880:2009 (technical specification, published 14 June 2009). Users should check the relevant national or CEN catalogues for any amendments, revisions or newer related standards before use; this entry represents the 2009 Technical Specification publication.

Q: Is it part of a series?

A: CEN/TS 15880:2009 is part of the body of CEN documents addressing advanced technical ceramics and ceramic composites; it is a standalone technical specification focused on a specific interfacial test method, and is typically used alongside other CEN/TR or ISO documents that cover notation, measurement practice and related test procedures.

Q: What are the key keywords?

A: single fibre push‑out, fibre/matrix interface, interfacial shear stress, ceramic matrix composite, indentation, test method, advanced technical ceramics.