EN 15365:2010
(Main)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
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
This European Standard specifies the conditions for the determination of the tensile creep deformation and failure behaviour of single filaments of ceramic fibres at high temperature and under test conditions that prevent changes to the material as a result of chemical reaction with the test environment.
This European Standard applies to continuous ceramic filaments taken from tows, yarns, braids and knittings, which have strains to fracture less than or equal to 5 %.
Hochleistungskeramik - Mechanische Eigenschaften von Keramikfasern bei hohen Temperaturen in einer reaktionsfreien Umgebung - Bestimmung des Kriechverhaltens im Kaltverbindungsverfahren
Diese Europäische Norm legt die Bedingungen für die Bestimmung der Kriechzugdehnung und des Fehlerverhaltens von einzelnen Fasern von Keramikfasern bei hohen Temperaturen und Prüfbedingungen, die Änderungen des Werkstoffs aufgrund chemischer Reaktionen mit der Prüfumgebung verhindern, fest.
Diese Europäische Norm gilt für Endlos Keramikfasern aus Bündeln, Garnen, Borten und Maschenwaren, die eine Bruchdehnung von weniger als oder gleich 5 % aufweisen.
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
La présente Norme européenne prescrit les conditions permettant de déterminer la déformation de fluage en
traction et le comportement à la rupture de monofilaments de fibres céramiques à température élevée et dans
des conditions d’essai empêchant toute modification du matériau en raison de la réaction chimique avec le
milieu d’essai.
Cette Norme européenne s’applique aux filaments céramiques continus issus de mèches, fils, tresses et
tricots dont les contraintes à la rupture sont inférieures ou égales à 5 %.
Sodobna tehnična keramika - Mehanske lastnosti keramičnih vlaken pri visokih temperaturah v nereaktivnem okolju - Določitev lezenja po metodi hladnega spajanja (cold end method)
Ta evropski standard določa pogoje za določitev natezne deformacije lezenja in napak pri delovanju enojnih filamentov keramičnih vlaken pri visokih temperaturah in pod preskusnimi pogoji, ki preprečujejo spremembe materiala, ki so posledica kemične reakcije s preskusnim okoljem. Ta evropski standard velja za neprekinjene keramične filamente iz svežnjev, preje, pletenic in pletenja z deformacijami, ki so manjše ali enake 5 %.
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Standards Content (Sample)
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.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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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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