Norm

NPR-CEN/TS 1159-4:2004 en

Technische keramiek - Keramische composieten - Thermo-fysische eigenschappen - Deel 4: Bepaling van de thermische conductiviteit

49,30

Over deze norm

Status Definitief
Aantal pagina's 15
Commissie Technische keramiek
Gepubliceerd op 01-08-2004
Taal Engels
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 d 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.

Details

ICS-code 81.060.30
Nederlandse titel Technische keramiek - Keramische composieten - Thermo-fysische eigenschappen - Deel 4: Bepaling van de thermische conductiviteit
Engelse titel Advanced technical ceramics - Ceramic composites - Thermophysical properties - Part 4: Determination of thermal conductivity

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