ISO 5722:2023

Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method for determining tensile and shear creep of ceramic adhesive

Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method for determining tensile and shear creep of ceramic adhesive

General Information

• Status: Published
• Publication Date: 28-Feb-2023
• ICS: 81.060.30 - Advanced ceramics
• Technical Committee: ISO/TC 206 - Fine ceramics
• Drafting Committee: ISO/TC 206 - Fine ceramics
• Current Stage: 6060 - International Standard published
• Start Date: 01-Mar-2023
• Due Date: 12-Nov-2023
• Completion Date: 01-Mar-2023

Overview

ISO 5722:2023 specifies a laboratory test method for determining tensile and shear creep of ceramic adhesive in fine/advanced ceramics at ambient temperature. The standard defines specimen preparation, test fixtures and apparatus, measurement and recording procedures, creep calculations and required test reporting. It is intended for evaluating time-dependent deformation (creep strain) and creep rupture time of adhesive layers used in ceramic–ceramic, ceramic–metal and ceramic–glass joints.

Key topics and technical requirements

• Test principle: Apply a constant uniaxial tensile or shear load to a cross-bonded sample so the adhesive layer experiences uniform stress; record displacement versus time to determine creep strain and rupture time.
• Specimen geometry: Rectangular bars (recommended section 10 mm × 10 mm, length > 30 mm) joined orthogonally to form a cross-bonded sample; adhesive layer thickness shall be > 1 mm.
• Measurement accuracy: Linear dimension devices should have resolution of 0.01 mm (ISO 3611); deformation (creep) measurement resolution 0.001 mm or finer. Continuous or sufficiently frequent displacement-time recording is required.
• Apparatus and fixtures: Creep testing machine must provide uniform, constant tensile/shear loads and meet verification per ISO 7500-2. Test fixtures should be made of hard metal with high elastic modulus and hardness (as specified in the standard).
• Loading procedure and limits: Interfacial strength tests are performed first; creep load shall not exceed 80% of the measured interface strength.
• Data and calculations: Standard provides formulas and procedures to calculate applied load, tensile creep strain and shear creep strain from measured displacements, cross-bonded area and initial adhesive thickness. Record rupture (fracture) time when applicable.
• Reporting: Test reports must reference ISO 5722:2023 and include laboratory identification, test dates, specimen details, test conditions, displacement–time curves, calculated creep data and rupture times.

Applications and users

ISO 5722 is valuable for:

• Materials researchers characterizing time-dependent behavior of ceramic adhesives and interfacial layers.
• Quality control and acceptance testing in manufacturers of advanced ceramics, ceramic assemblies, and bonded components.
• Design engineers generating data for lifetime predictions and reliability assessments of ceramic joints under sustained loads.
• Test laboratories performing standardized creep testing and certification.

Keywords: ISO 5722, tensile creep, shear creep, ceramic adhesive, fine ceramics, advanced ceramics, creep testing, cross-bonded sample, creep strain.

Related standards

• ISO 13124 - Test method for interfacial bond strength of ceramic materials (specimen preparation referenced).
• ISO 7500-2 - Verification of static uniaxial testing machines (creep testing machine verification).
• ISO 3611 - Micrometers for external measurements (dimension-measuring equipment).

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 5722
First edition
2023-03
Fine ceramics (advanced ceramics,
advanced technical ceramics) — Test
method for determining tensile and
shear creep of ceramic adhesive
Reference number
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
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or ISO’s member body in the country of the requester.
ISO copyright office
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Phone: [phone]
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Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
6 Test specimen . 3
6.1 Test specimen size and preparation . 3
6.2 Test specimen storage . 6
7 Test procedures . 6
7.1 Measurement of specimen dimensions . 6
7.2 Measurements of the tensile or shear creep . 6
7.3 Measurements of the cross-bonded area and thickness . 9
7.4 Loading procedure . 9
7.5 Recording of displacement and rupture time . 9
8 Calculation of results . 9
8.1 Calculation of the tensile creep . 9
8.2 Calculation of the shear creep . 9
9 Test report .10
Bibliography .11
iii
Foreword
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electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 206, Fine ceramics.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
INTERNATIONAL STANDARD ISO 5722:2023(E)
Fine ceramics (advanced ceramics, advanced technical
ceramics) — Test method for determining tensile and
shear creep of ceramic adhesive
1 Scope
This document specifies a testing method for determining the tensile and shear creep of ceramic
adhesive at ambient temperature by tensile and shear tests on cross-bonded test specimens. Procedures
for test piece preparation, test modes, data collection, creep calculations and reporting are addressed.
This document is applicable primarily to ceramic materials which are used for ceramic-ceramic,
ceramic-metal and ceramic-glass joining, including monolithic fine ceramics and whisker- or
particulate-reinforced ceramic composites. This test method can be used for material research, quality
control, 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 7500-2, Metallic materials — Verification of static uniaxial testing machines — Part 2: Tension creep
testing machines — Verification of the applied force
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 terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
tensile creep
time-dependent deformation of a test specimen subjected to a uniaxial tensile load
[SOURCE: ISO 22215:2006, 3.10, modified — “load” replaced “force”.]
3.2
shear creep
time-dependent deformation of a test specimen subjected to a uniaxial shear load
3.3
cross-bonded sample
test piece prepared by joining a pair of rectangular bars to form a symmetrical cross by means of
ceramic adhesive (3.5)
3.4
creep rupture time
time required for a test specimen to fracture under constant force as a result of tensile creep (3.1) or
shear creep (3.2)
[SOURCE: ISO 22215:2006, 3.3, modified — “or shear creep” added.]
3.5
ceramic adhesive
adhesive for ceramics bonding, as an interface material between ceramics and other solid materials
4 Principle
For determining the tensile and shear creep strain and creep rupture time of ceramic adhesive,
a constant uniaxial load is applied to a cross-bonded sample so that the interface layer (adhesive) is
subjected to uniform tension or shearing and the deformation time is recorded.
5 Apparatus
The usual laboratory apparatus and, in particular, the following shal
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