EN 15365:2010

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.KODGQHJDHochleistungskeramik - Mechanische Eigenschaften von Keramikfasern bei hohen Temperaturen in einer reaktionsfreien Umgebung - Bestimmung des Kriechverhaltens im KaltverbindungsverfahrenCéramiques techniques avancées - Propriétés mécaniques des fibres céramiques à haute température sous environnement non-réactif - Détermination du comportement au fluage par la méthode des mors froidsAdvanced technical ceramics - Mechanical properties of ceramic fibres at high temperature in a non-reactive environment - Determination of creep behaviour by the cold end method81.060.30Sodobna keramikaAdvanced ceramicsICS:Ta slovenski standard je istoveten z:EN 15365:2010SIST EN 15365:2010en,de01-september-2010SIST EN 15365:2010SLOVENSKI
STANDARDSIST-TS CEN/TS 15365:20061DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15365
July 2010 ICS 81.060.30 Supersedes CEN/TS 15365:2006English Version
Advanced technical ceramics -Mechanical properties of ceramic fibres at high temperature in a non-reactive environment - Determination of creep behaviour by the cold end method
Céramiques techniques avancées - Propriétés mécaniques des fibres céramiques à haute température sous environnement non-réactif - Détermination du comportement au fluage par la méthode des mors froids
Hochleistungskeramik - Mechanische Eigenschaften von Keramikfasern bei hohen Temperaturen in einer reaktionsfreien Umgebung - Bestimmung des Kriechverhaltens im Kaltverbindungsverfahren This European Standard was approved by CEN on 25 June 2010.
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Tt minimum temperature at which creep is detected 3.3 specimen temperature T temperature which varies along the fibre length in the cold grips case
NOTE See 8.2. 3.4 specimen temperature in the zone Ti temperature defined as: Tt ≤ Ti ≤ Tt + i ∆T 3.5 total length
L total length of the ceramic filament between the grips 3.6 length Li length of the ceramic filament at temperature Ti SIST EN 15365:2010

NOTE
See Figure 1. 3.17 secondary creep part of the creep strain versus time curve which presents a constant creep strain rate
NOTE
See Figure 1. SIST EN 15365:2010

NOTE See Figure 1.
a) Creep strain versus time
b) Creep strain rate versus time Key 1 Creep strain ε cr 6 Creep strain rate ε&cr (creep strain with time) 2 Time t 7 Time 3 Primary creep 8 Primary creep 4 Secondary creep 9 Secondary creep 5 Tertiary creep 10 Tertiary creep Figure 1 — Creep strain and creep strain rate versus time curves SIST EN 15365:2010

Key T Temperature (°C) l Length of the furnace P Position (mm) En Entrance Ex Exit L total length of the ceramic filament between the groups L0 = L2ûT + 2LûT
where
L2ûT is the furnace length where the temperature T is in the range Tt + ∆T ≤ T ≤ Tt + 2 ∆T;
LûT is the furnace length where the temperature T is in the range Tt ≤ T ≤ Tt + ∆T. Figure 2 — Temperature profile in furnace If Tt is considered to be the lowest temperature at which creep is observed, the temperature profile can be divided in several intervals as a function of Tt and ∆T, where ∆T is the difference in temperature between the different zones, fixed by the operator. If we consider i, the entire number of zones, and L, the total fibre length, then we can define the following lengths:  L20 is the furnace length where the temperature T is in the range 20 °C ≤ T ≤ Tt; SIST EN 15365:2010
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