EN 1007-5:2010

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.MREUHPHQLWHYHochleistungskeramik - Keramische Verbundwerkstoffe - Verfahren zur Prüfung der Faserverstärkungen - Teil 5: Bestimmung der Verteilung von Zugfestigkeit und Zugdehnung von Fasern im Faserbündel bei RaumtemperaturCéramiques techniques avancées - Céramiques composites - Méthodes d'essais pour renforts - Partie 5: Détermination de la distribution de la résistance en traction et de la déformation de traction à la rupture des filaments dans un fil à température ambianteAdvanced technical ceramics - Ceramic composites - Methods of test for reinforcements - Part 5: Determination of distribution of tensile strength and of tensile strain to failure of filaments within a multifilament tow at ambient temperature81.060.30Sodobna keramikaAdvanced ceramicsICS:Ta slovenski standard je istoveten z:EN 1007-5:2010SIST EN 1007-5:2010en,fr,de01-maj-2010SIST EN 1007-5:2010SLOVENSKI
STANDARDSIST EN 1007-5:20041DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1007-5
March 2010 ICS 81.060.30 Supersedes EN 1007-5:2003English Version
Advanced technical ceramics - Ceramic composites - Methods of test for reinforcements - Part 5: Determination of distribution of tensile strength and of tensile strain to failure of filaments within a multifilament tow at ambient temperature
Céramiques techniques avancées - Céramiques composites - Méthodes d'essais pour renforts - Partie 5: Détermination de la distribution de la résistance en traction et de la déformation de traction à la rupture des filaments dans un fil à température ambiante
Hochleistungskeramik - Keramische Verbundwerkstoffe - Verfahren zur Prüfung der Faserverstärkungen - Teil 5: Bestimmung der Verteilung von Zugfestigkeit und Zugdehnung von Fasern im Faserbündel bei Raumtemperatur This European Standard was approved by CEN on 13 February 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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Cylindrical end type specimen . 88Test specimen preparation . 88.1General . 88.2Window type specimen . 88.3Cylindrical end type specimen . 98.4Number of test specimens . 98.5Determination of the initial cross sectional area . 98.6Determination of the gauge length . 109Testing technique . 109.1Test specimen mounting . 109.2Selection of strain rate . 109.3Measurement . 119.4Determination of load train compliance . 119.5Test validity . 1110Calculation of results . 1110.1Calculation of the parasitic load train compliances . 1110.2Determination of true origin . 1210.3Construction of envelope curve and determination of instantaneous compliance Ct,j. 1210.4Probability of filament rupture . 1310.5Distribution of filament strain . 1310.5.1Calculation of filament strain . 1310.5.2Distribution of filament strain . 1310.6Distribution of filament strength . 1410.6.1Initial cross sectional area . 1410.6.2Elastic modulus (Young’s modulus) of the tow . 1410.6.3Calculation of filament strength and filament strength distribution . 1510.7Average filament rupture strain and average filament rupture strength . 1510.8Overall average filament rupture strain and overall average filament rupture strength . 1510.9Calculation of tow strength . 1611Test report . 16Bibliography . 18 SIST EN 1007-5:2010

1 Scope This European Standard specifies the conditions, apparatus and procedure for determining the distribution of tensile strength and tensile strain to failure of ceramic filaments in multifilament tows at ambient temperature.
This European Standard applies to tows of continuous ceramic filaments, which are assumed to act freely and independently under loading, and behave linearly elastic up to failure. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1007-2, Advanced technical ceramics — Ceramic composites — Methods of test for reinforcement — Part 2: Determination of linear density CEN/TR 13233:2007, Advanced technical ceramics — Notations and symbols ISO 10119, Carbon fibre — Determination of density 3 Terms and definitions
For the purposes of this document, the terms and definitions given in CEN/TR 13233:2007 and the following apply. 3.1 gauge length
L0 initial distance between two reference points on the tow NOTE Usually the gauge length is taken as the distance between the gripped ends of the tow. 3.2 initial cross sectional area
A0 sum of the cross sectional areas of all the filaments in the tow 3.3 tow elongation
∆∆∆∆L increase of the gauge length between the two reference points on the tow
3.4 tow strain 0 ratio of the tow elongation ûL to the gauge length Lo 3.5 tow maximum tensile force Ftow highest recorded tensile force on the test specimen when tested to failure SIST EN 1007-5:2010

1j ratio of the tensile force to the cross sectional area of all unbroken filaments at step j in the non-linear parts of the force-displacement curve 3.10 average filament rupture strain rε statistical average rupture strain of the filaments in the tow for each test determined from the Weibull strain distribution parameters of the filaments 3.11 overall average filament rupture strain rε arithmetic mean of the average filament rupture strains 3.12 average filament strength rσ statistical average strength of the filaments in the tow for each test determined from the Weibull strength distribution parameters of the filaments 3.13 overall average filament strength rσ arithmetic mean of the average filament strengths 3.14 compliances
3.14.1 initial total compliance Ct inverse slope of the linear part of the force-displacement curve 3.14.2 instantaneous total compliance Ct,j inverse slope of the secant at any point j in the non-linear part of the force-displacement curve SIST EN 1007-5:2010
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