EN ISO 15732:2005
(Main)Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method for fracture toughness of monolithic ceramics at room temperature by single edge precracked beam (SEPB) method (ISO 15732:2003)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method for fracture toughness of monolithic ceramics at room temperature by single edge precracked beam (SEPB) method (ISO 15732:2003)
ISO 15732:2003 describes a test method for the determination of fracture toughness of monolithic ceramic materials at room temperature by the Single-Edge-Precracked-Beam (SEPB) method.
This International Standard is intended for use with monolithic ceramics and whisker- or particulate-reinforced ceramics which are regarded as macroscopically homogeneous. It does not include continuous-fiber-reinforced ceramic composites.
ISO 15732:2003 is for material development, material comparison, quality assurance, characterization, reliability and design data generation.
Fracture toughness values determined with other test methods cannot be interchanged with KIpb as defined in this International Standard, and may not be interchangeable with each other.
Hochleistungskeramik - Prüfverfahren zur Bestimmung der Bruchzähigkeit monolithischer Keramik bei Raumtemperatur an einseitig gekerbten Biegeproben (SEPB-Verfahren) (ISO 15732:2003)
Diese Internationale Norm legt ein Prüfverfahren zur Bestimmung der Bruchzähigkeit monolithischer
keramischer Werkstoffe fest, das bei Raumtemperatur an einseitig gekerbten Biegeproben (SEPB-Verfahren)
durchgeführt wird.
Diese Internationale Norm ist für die Anwendung auf monolithische Keramiken und durch Whisker oder
Teilchen verstärkte Keramiken vorgesehen, die makroskopisch als homogen angesehen werden. Keramische
Verbundwerkstoffe mit Endlosfaserverstärkung werden nicht erfasst.
Die vorliegende Internationale Norm ist zur Entwicklung dieser keramischen Werkstoffe, für Vergleiche
zwischen keramischen Werkstoffen, zur Qualitätssicherung, für Beschreibungen, für die Zuverlässigkeit und
die Gestaltung der ermittelten Daten anwendbar.
Bruchzähigkeitswerte, die nach anderen Prüfverfahren bestimmt werden, können nicht gegen den in dieser
Internationalen Norm definierten Bruchzähigkeitswert K lpb ausgetauscht werden, und es kann sein, dass sie
überhaupt nicht miteinander austauschbar sind.
Die in dieser Internationalen Norm angegebenen Werte entsprechen dem Internationalen
Einheitensystem (SI).
Céramiques techniques - Méthode d'essai de ténacité à la rupture des céramiques monolithiques à température ambiante sur éprouvette préfissurée sur une seule face (méthode SEPB) (ISO 15732:2003)
L'ISO 15732:2003 décrit une méthode d'essai pour la détermination de la ténacité à la rupture des matériaux céramiques monolithiques à température ambiante sur éprouvette préfissurée sur une seule face (méthode SEPB).
La présente Norme internationale est destinée à être utilisée avec les céramiques monolithiques et les céramiques à renfort de trichite ou de particules qui sont considérées comme macroscopiquement homogènes. Elle ne traite pas des composites en céramiques renforcés de fibres continues.
L'ISO 15732:2003 est applicable au développement et à la comparaison de matériaux, à l'assurance qualité, à la caractérisation, à la fiabilité et à la génération de données de fabrication.
Les valeurs de la ténacité à la rupture déterminées à l'aide d'autres méthodes d'essai ne peuvent être utilisées à la place de la valeur KIpb telle que définie dans la présente Norme internationale et ne sont pas interchangeables.
Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method for fracture toughness of monolithic ceramics at room temperature by single edge precracked beam (SEPB) method (ISO 15732:2003)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2005
Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method
for fracture toughness of monolithic ceramics at room temperature by single edge
precracked beam (SEPB) method (ISO 15732:2003)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method for
fracture toughness of monolithic ceramics at room temperature by single edge
precracked beam (SEPB) method (ISO 15732:2003)
Hochleistungskeramik - Prüfverfahren zur Bestimmung der Bruchzähigkeit
monolithischer Keramik bei Raumtemperatur an einseitig gekerbten Biegeproben (SEPB-
Verfahren) (ISO 15732:2003)
Céramiques techniques - Méthode d'essai de ténacité a la rupture des céramiques
monolithiques a température ambiante sur éprouvette préfissurée sur une seule face
(méthode SEPB) (ISO 15732:2003)
Ta slovenski standard je istoveten z: EN ISO 15732:2005
ICS:
81.060.30 Sodobna keramika Advanced ceramics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 15732
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2005
ICS 81.060.30
English version
Fine ceramics (advanced ceramics, advanced technical
ceramics) - Test method for fracture toughness of monolithic
ceramics at room temperature by single edge precracked beam
(SEPB) method (ISO 15732:2003)
Céramiques techniques - Méthode d'essai de ténacité à la Hochleistungskeramik - Prüfverfahren zur Bestimmung der
rupture des céramiques monolithiques à température Bruchzähigkeit monolithischer Keramik bei
ambiante sur éprouvette préfissurée sur une seule face Raumtemperatur an einseitig gekerbten Biegeproben
(méthode SEPB) (ISO 15732:2003) (SEPB-Verfahren) (ISO 15732:2003)
This European Standard was approved by CEN on 2 June 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
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
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15732:2005: E
worldwide for CEN national Members.
Foreword
The text of ISO 15732:2003 has been prepared by Technical Committee ISO/TC 206 "Fine
ceramics" of the International Organization for Standardization (ISO) and has been taken over as
secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by December 2005, and conflicting national
standards shall be withdrawn at the latest by December 2005.
This document is part of a series:
CEN/TS 14425-1 Advanced technical ceramics — Test methods for determination of fracture
toughness of monolithic ceramics — Part 1: Guide to test method selection
CEN/TS 14425-3 Advanced technical ceramics — Test methods for determination of fracture
toughness of monolithic ceramics — Part 3: Chevron notched beam (CNB) method
CEN/TS 14425-5 Advanced technical ceramics — Test methods for determination of fracture
toughness of monolithic ceramics — Part 5: Single-edge V-notch beam (SEVNB) method
EN ISO 15732 Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method
for fracture toughness of monolithic ceramics at room temperature by single edge precracked
beam (SEPB) method
EN ISO 18756 Fine ceramics (advanced ceramics, advanced technical ceramics) —
Determination of fracture toughness of monolithic ceramics at room temperature by the surface
crack in flexure (SCF) method
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: 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.
Endorsement notice
The text of ISO 15732:2003 has been approved by CEN as EN ISO 15732:2005 without any
modifications.
INTERNATIONAL ISO
STANDARD 15732
First edition
2003-09-01
Fine ceramics (advanced ceramics,
advanced technical ceramics) — Test
method for fracture toughness of
monolithic ceramics at room temperature
by single edge precracked beam (SEPB)
method
Céramiques techniques — Méthode d'essai de ténacité à la rupture des
céramiques monolithiques à température ambiante sur éprouvette
préfissurée sur une seule face (méthode SEPB)
Reference number
ISO 15732:2003(E)
©
ISO 2003
ISO 15732:2003(E)
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ii © ISO 2003 — All rights reserved
ISO 15732:2003(E)
Contents Page
Foreword. iv
1 Scope. 1
2 Normative references . 1
3 Terms and definitions. 2
4 Symbols and designations. 3
5 Principle . 3
6 Apparatus. 4
7 Test specimens . 7
8 Test methods. 8
9 Evaluation of validity of measured value . 13
10 Calculation. 14
11 Test report. 15
Annex A (informative) Precracking fixture. 16
Annex B (informative) Recommended procedures in SEPB method. 18
Bibliography . 21
ISO 15732:2003(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 15732 was prepared by Technical Committee ISO/TC 206, Fine ceramics.
iv © ISO 2003 — All rights reserved
INTERNATIONAL STANDARD ISO 15732:2003(E)
Fine ceramics (advanced ceramics, advanced technical
ceramics) — Test method for fracture toughness of monolithic
ceramics at room temperature by single edge precracked beam
(SEPB) method
1 Scope
This International Standard describes a test method for the determination of fracture toughness of monolithic
ceramic materials at room temperature by the Single Edge Precracked Beam (SEPB) method.
This International Standard is intended for use with monolithic ceramics and whisker- or particulate-reinforced
ceramics which are regarded as macroscopically homogeneous. It does not include continuous-fiber-
reinforced ceramic composites.
This International Standard is for material development, material comparison, quality assurance,
characterization, reliability and design data generation.
Fracture toughness values determined with other test methods cannot be interchanged with K as defined in
Ipb
this International Standard, and may not be interchangeable with each other.
Values expressed in this International Standard are in accordance with the International System of Units (SI).
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.
ISO 1101:1983, Technical drawings — Geometrical tolerancing — Tolerancing of form, orientation, location
and run-out — Generalities, definitions, symbols, indications on drawings
ISO 3312:1987, Sintered metal materials and hardmetals — Determination of Young modulus
ISO 4287:1997, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Terms,
definitions and surface texture parameters
ISO 6507-1:1997, Metallic materials — Vickers hardness test — Part 1: Test method
ISO 15732:2003(E)
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
stress intensity factor
K
I
magnitude of the elastic stress field singularity at the tip of a crack subjected to opening mode displacement
NOTE It is a function of applied force and test specimen size, geometry and crack length, and has the dimensions of
−3/2
force times length .
3.2
fracture toughness
generic term for the magnitude of resistance to crack extension
3.3
fracture toughness value
K
Ipb
fracture toughness value measured by the SEPB method
NOTE This represents the measured stress intensity factor corresponding to the extension resistance of a straight-
through pop-in crack formed via bridge loading of a Vickers indent or a saw notch. The measurement is performed in
accordance with the operational procedure described in Clauses 5 and 10 and satisfies all the validity requirements.
3.4
precrack
crack induced artificially into a specimen, primarily so as to measure the fracture toughness
3.5
precrack front line
line to indicate the position of the tip of the precrack
3.6
pop-in
phenomenon where a crack arrests after sudden and unstable growth giving rise to an acoustic signature
3.7
three-point bending
loading configuration whe
...
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