CEN/TS 1159-4:2004

Advanced technical ceramics - Ceramic composites - Thermophysical properties - Part 4: Determination of thermal conductivity

This document describes a method for the determination of the thermal conductivity of ceramic matrix composites with continuous fibre reinforcement. This method applies to all ceramic matrix composites with a fibre reinforcement, unidirectional (1D), bidirectional (2D), and tridirectional (xD, with 2 < x <= 3) as defined in ENV 13233, submitted to a heat flux along one principal axis of anisotropy.
The experimental conditions are such that the material behaves in an homogeneous manner for each of its axis of anisotropy and that the heat transfer occurs only by thermal conduction. The method is applicable to materials which are physically and chemically stable during the measurement.
Contrary to other methods of direct measurement which permit only to determine a value of the thermal conductivity averaged over an interval of temperature, the method described in this document, based on an adequate exploitation of the temperature record, allows to determine with a good accuracy the thermal conductivity at a defined temperature. This is more interesting since the variation of the thermal conductivity with the temperature is non-linear, which is generally the case for CMC's.
NOTE   It is also possible to calculate the conductivity of CMC's by an indirect method using the following equation:
y = a  x pb x Cp
where
y   is the thermal conductivity;
a   is the thermal diffusivity;
pb   is the bulk density;
Cp   is the specific heat capacity.

Hochleistungskeramik - Keramische Verbundwerkstoffe - Thermophysikalische Eigenschaften - Teil 4: Bestimmung der Wärmeleitfähigkeit

Céramiques techniques avancées - Composites céramiques, propriétés thermophysiques - Partie 4: Détermination de la conductivité thermique

Sodobna tehnična keramika – Keramični kompoziti – Termofizikalne lastnosti – 4. del: Določanje toplotne prevodnosti

General Information

• Status: Withdrawn
• Publication Date: 27-Jul-2004
• Withdrawal Date: 05-Jul-2023
• ICS: 81.060.30 - Advanced ceramics
• Technical Committee: CEN/TC 184 - Advanced technical ceramics
• Drafting Committee: CEN/TC 184/SC 1 - Ceramic composites
• Mandate: M/076 - Mandate to CEN/CENELEC for standardization in the field of advanced ceramics
• Ref Project: SIST-TS CEN/TS 1159-4:2005 - Advanced technical ceramics - Ceramic composites - Thermophysical properties - Part 4: Determination of thermal conductivity

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TS CEN/TS 1159-4:2005
01-januar-2005
6RGREQDWHKQLþQDNHUDPLND±.HUDPLþQLNRPSR]LWL±7HUPRIL]LNDOQHODVWQRVWL±
GHO'RORþDQMHWRSORWQHSUHYRGQRVWL
Advanced technical ceramics - Ceramic composites - Thermophysical properties - Part 4:
Determination of thermal conductivity
Hochleistungskeramik - Keramische Verbundwerkstoffe - Thermophysikalische
Eigenschaften - Teil 4: Bestimmung der Wärmeleitfähigkeit
Céramiques techniques avancées - Composites céramiques, propriétés
thermophysiques - Partie 4: Détermination de la conductivité thermique
Ta slovenski standard je istoveten z: CEN/TS 1159-4:2004
ICS:
81.060.30 Sodobna keramika Advanced ceramics
SIST-TS CEN/TS 1159-4:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CEN/TS 1159-4:2005

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SIST-TS CEN/TS 1159-4:2005
TECHNICAL SPECIFICATION
CEN/TS 1159-4
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
July 2004
ICS 81.060.30
English version
Advanced technical ceramics - Ceramic composites -
Thermophysical properties - Part 4: Determination of thermal
conductivity
This Technical Specification (CEN/TS) was approved by CEN on 13 July 2001 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 1159-4:2004: E
worldwide for CEN national Members.

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SIST-TS CEN/TS 1159-4:2005
CEN/TS 1159-4:2004 (E)
Contents Page
Foreword. 3
1 Scope. 5
2 Normative references . 5
3 Terms and definitions. 5
4 Significance and use . 6
5 Principle . 6
6 Apparatus . 8
7 Test specimens dimensions . 9
8 Test specimens preparation . 10
9 Number of test specimens . 11
10 Test procedure . 11
11 Test validity . 14
12 Results . 14
13 Test report . 15

2

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SIST-TS CEN/TS 1159-4:2005
CEN/TS 1159-4:2004 (E)
Forew
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