ISO 20407:2017

INTERNATIONAL ISO
STANDARD 20407
First edition
2017-09
Fine ceramics (advanced ceramics,
advanced technical ceramics) — Test
method for interfacial tensile and
shear fatigue properties of ceramic
joining loaded in constant amplitude
at room temperature
Céramiques fines (céramiques avancées, céramiques techniques
avancées) — Méthode d'essai relatives aux propriétés de tension
interfaciale et de fatigue en cisaillement des jonctions céramiques à
amplitude constante
Reference number
©
ISO 2017
© ISO 2017, Published in Switzerland
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ii © ISO 2017 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 3
6 Test pieces . 5
6.1 Test-piece size . 5
6.2 Test-piece preparation . 5
6.2.1 General. 5
6.2.2 Test-piece storage . 5
6.2.3 Number of test pieces . 5
7 Test procedure . 6
7.1 Measurement of the test piece dimensions . 6
7.2 Measurement of the interfacial tensile fatigue properties . 6
7.3 Measurement of the interfacial shear fatigue properties . 6
7.4 Residual properties . 7
7.5 Test validity . 7
8 Calculation of results . 8
9 Test report . 8
Foreword
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This document was prepared by Technical Committee ISO/TC 206, Fine ceramics.
iv © ISO 2017 – All rights reserved

INTERNATIONAL STANDARD ISO 20407:2017(E)
Fine ceramics (advanced ceramics, advanced technical
ceramics) — Test method for interfacial tensile and shear
fatigue properties of ceramic joining loaded in constant
amplitude at room temperature
1 Scope
This document specifies a test method for determining interfacial tensile/tensile or shear/shear cyclic
fatigue properties of ceramic-ceramic, ceramic-metal, and ceramic-glass joining loaded in the constant
amplitude at room temperature. Procedures for test piece preparation, test modes and rates (load rate
or displacement), data collection and reporting procedures are given.
This document applies primarily to ceramic materials, including monolithic fine ceramics and whisker-,
fibre- or particle-reinforced ceramic composites. This test method can be used for material research,
quality control, and characterization and design data-generation purposes.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 3611, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for
external measurements — Design and metrological characteristics
ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1:
Tension/compression testing machines — Calibration and verification of the force-measuring system
ISO 13124, Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for interfacial
bond strength of ceramic materials
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1
cross-bonded test piece
test sample in the form of a symmetrical cross
Note 1 to entry: Prepared by joining two rectangular bars with the same shape and size, as described in
ISO 13124.
3.2
average applied stress during cyclic fatigue
σ
m
average value between the maximum applied stress and the minimum applied stress during cyclic fatigue
3.3
constant amplitude loading
under a given average applied stress, σ , keeping peak loads and valley loads constant for wave form
m
loading in cyclic fatigue loading, Δσ = (σ − σ )/2 = σ − σ = σ − σ
max min max m m min
3.4
number of cycles
N
total number of loading cycles applied to the test piece during the test
3.5
cyclic fatigue life
N
f
total number of loading cycles until the test piece is up to failure
3.6
time to failure
t
f
time duration until the test piece is up to failure
4 Principle
A cross-bonded test piece is cycled under a given average stress with constant amplitude loading at
room temperature, which yields cyclic tensile/tensile or shear/shear stress in the interface. Typical
cyclic loading waves including sine wave, triangular wave and trapezoidal wave are shown in Figure 1.
...