SIST EN ISO 12680-1:2007 PDF

Name: SIST EN ISO 12680-1:2007 — Methods of test for refractory products - Part 1: Determination of dynamic Young's modulus (MOE) by impulse excitation of vibration (ISO 12680-1:2005)
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Methods of test for refractory products - Part 1: Determination of dynamic Young's modulus (MOE) by impulse excitation of vibration (ISO 12680-1:2005)

Название (английский):

SIST EN ISO 12680-1:2007

Methods of test for refractory products - Part 1: Determination of dynamic Young's modulus (MOE) by impulse excitation of vibration (ISO 12680-1:2005)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 17
Дата публикации:: 12 июня 2007 г.
ICS:: 81.080
Технический комитет:: IKER - Ceramics

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Описание (английский):

ISO 12680-1:2005 specifies a method for determining the dynamic Young's modulus of rectangular cross-section bars and circular cross-section specimens of refractories by impulse excitation of vibration. The dynamic Young's modulus is determined using the resonant frequency of the specimen in its flexural mode of vibration.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 12680-1:2007 / ISO 12680-1:2005 defines a non‑destructive laboratory method to determine the dynamic Young’s modulus (MOE) of refractory materials by impulse excitation of vibration. The method uses the specimen’s fundamental resonant frequency in its flexural mode (bending vibration) to calculate dynamic MOE for slender rectangular bars and cylindrical rods.

Key topics and technical requirements

Scope and geometry: Intended for slender specimens (length / thickness or diameter ≥ 5) with regular rectangular or circular cross sections.

Measurement principle: Single elastic strike (hammer) excites flexural vibration; a transducer (contact or non‑contact) records vibration and a signal analyser extracts the fundamental resonant frequency.

Apparatus essentials:

Small striker hammer (polymer rod with hard ball tip) sized to avoid specimen damage.
Transducer options: accelerometer (piezoelectric), microphone, laser, magnetic or capacitance pickups.
Electronic analysis: amplifier/conditioner plus frequency analyser or digital storage oscilloscope with FFT and frequency counter.
Supports to isolate specimen while allowing free flexural vibration (soft foam strips or rigid knife-edge supports).

Performance and accuracy:

Typical transducer bandwidth example: 50 Hz – 20 kHz for many refractory specimens.
Frequency measurement accuracy recommended to about 0.1%.
Sensitivities: results depend strongly on specimen dimensions and thickness (dynamic modulus varies inversely with the cube of thickness); surface roughness, cracks or large voids reduce accuracy.

Additional notes:

Method is non‑destructive and can be applied to specimens prepared for other tests.
Use at elevated temperatures is possible with suitable equipment modification (not detailed in this part).
Normative references include ISO 5022 and ISO 8656‑1; ISO 12680 Part 2 (static modulus) is under preparation.

Applications and users

Applications:

Quality control and batch testing of refractory products.
Material characterization during development and process control.
Comparative assessment of stiffness, homogeneity and production consistency.

Who uses it:

Refractory manufacturers and process engineers.
Independent materials testing laboratories.
R&D teams and materials scientists evaluating elastic properties.
Quality assurance and standards compliance personnel.

Related standards

EN ISO 12680-1:2007 (CEN adoption of ISO 12680-1:2005) - official European status.

Normative references: ISO 5022:1979, ISO 8656‑1:1988.

See also: future ISO 12680‑2 (static modulus of elasticity), when published.

Keywords: EN ISO 12680-1, ISO 12680-1:2005, dynamic Young’s modulus, MOE, impulse excitation, impulse excitation of vibration, refractory products, resonant frequency, non‑destructive testing.

SIST EN ISO 12680-1:2007 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

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