ISO 22215:2006 PDF

Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for tensile creep of monolithic ceramics

Название (английский):

ISO 22215:2006

Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for tensile creep of monolithic ceramics

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 7
Дата публикации:: 9 января 2006 г.
Издание:: ISO IS 22215 edition 1 version 1
ICS:: 81.060.30

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Описание (английский):

ISO 22215:2006 specifies the test method for determining the tensile-creep strain and creep rupture time under uniaxial constant force of monolithic fine ceramics and whisker or particulate-reinforced ceramic composites at high temperatures. This test method may be used for material development, material comparison, quality assurance, characterization and design data generation.

Технические детали

Технический комитет: ISO/TC 206 - Fine ceramics
SKU: ISO 22215:2006

Abstract

Overview

ISO 22215:2006 defines a standardized test method for tensile creep of fine ceramics (advanced/technical ceramics) - including monolithic ceramics and whisker- or particulate-reinforced ceramic composites - under a constant uniaxial tensile force at high temperatures. The standard is intended for material development, comparison, quality assurance, characterization and generation of design data, including measurement of time-dependent elongation (creep strain) and creep rupture time.

Key topics and technical requirements

Test principle: Apply a constant uniaxial tensile force and record time-dependent elongation to obtain time–strain curves and rupture time.
Apparatus requirements:
- Tensile-creep testing machine compliant with ISO 7500-2 (verification to class 1) to minimize bending/torsion and force fluctuation.
- Heating furnace with temperature control: specimen temperature maintained within 2 K and maximum deviation over the gauge section ≤ 5 K.
- Temperature measurement resolution ≤ 1 K and accuracy including thermocouple errors around ±5 K; alternative pyrometers allowed if equivalent accuracy is met.
- Elongation measured with an extensometer meeting ISO 9513 (class 1) or equivalent.
Specimens:
- Gauge-section cross-section uniformity within ±0.5%; dimensional measurement accuracy to 0.02 mm (ISO 3611).
- Recommended surface finish in the gauge section: 0.2–0.4 µm Ra (ISO 4287), with grinding marks parallel to tensile axis.
Procedures:
- Verify axial alignment using a “dummy” specimen and strain gauges to evaluate and limit bending strain components.
- Heating and soak to thermal equilibrium before testing; soak time determined experimentally.
- Apply load without shock; initial preload (if used)

Overview

Key topics and technical requirements

Test principle: Apply a constant uniaxial tensile force and record time-dependent elongation to obtain time–strain curves and rupture time.
Apparatus requirements:
- Tensile-creep testing machine compliant with ISO 7500-2 (verification to class 1) to minimize bending/torsion and force fluctuation.
- Heating furnace with temperature control: specimen temperature maintained within 2 K and maximum deviation over the gauge section ≤ 5 K.
- Temperature measurement resolution ≤ 1 K and accuracy including thermocouple errors around ±5 K; alternative pyrometers allowed if equivalent accuracy is met.
- Elongation measured with an extensometer meeting ISO 9513 (class 1) or equivalent.
Specimens:
- Gauge-section cross-section uniformity within ±0.5%; dimensional measurement accuracy to 0.02 mm (ISO 3611).
- Recommended surface finish in the gauge section: 0.2–0.4 µm Ra (ISO 4287), with grinding marks parallel to tensile axis.
Procedures:
- Verify axial alignment using a “dummy” specimen and strain gauges to evaluate and limit bending strain components.
- Heating and soak to thermal equilibrium before testing; soak time determined experimentally.
- Apply load without shock; initial preload (if used)

ISO 22215:2006 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

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Abstract

Overview

Key topics and technical requirements

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