IEC TS 63081:2019
(Main)Ultrasonics - Methods for the characterization of the ultrasonic properties of materials
Ultrasonics - Methods for the characterization of the ultrasonic properties of materials
IEC TS 63081:2019:
• defines key quantities relevant to ultrasonic materials characterization;
• specifies methods for direct measurement of many key ultrasonic materials parameters.
This document is applicable to all measurements of properties of passive acoustic materials under drive conditions that are not subject to nonlinear acoustic propagation. Whilst there are materials properties that may be of interest in a nonlinear drive regime, these are currently outside the scope of this document.
General Information
Standards Content (Sample)
IEC TS 63081 ®
Edition 1.0 2019-12
TECHNICAL
SPECIFICATION
colour
inside
Ultrasonics – Methods for the characterization of the ultrasonic properties
of materials
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IEC TS 63081 ®
Edition 1.0 2019-12
TECHNICAL
SPECIFICATION
colour
inside
Ultrasonics – Methods for the characterization of the ultrasonic properties
of materials
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 17.140.50 ISBN 978-2-8322-7643-3
– 2 – IEC TS 63081:2019 ® IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 List of symbols . 10
5 Overview . 12
5.1 General principles . 12
5.2 Sample preparation . 12
5.2.1 Fluid samples . 12
5.2.2 Solid samples . 13
5.2.3 Sample geometry . 13
5.2.4 Sample stabilization . 13
5.3 Source and receiver transducers . 14
5.4 Transmission versus reflection measurements . 14
5.5 Transducer excitation signal . 15
5.5.1 Frequency dependence of quantities . 15
5.5.2 CW and quasi-CW methods . 15
5.5.3 Frequency modulated pulses and time delay spectrometry . 16
5.5.4 Impulse methods . 18
6 Insertion loss measurement . 19
7 Longitudinal wave speed measurements . 22
7.1 General . 22
7.2 Transducers immersed within fluid material . 22
7.3 Transducers and sample immersed in a coupling fluid . 23
8 Absorption coefficient measurements . 24
8.1 Single sample through transmission method . 24
8.2 Double sample through transmission method . 26
9 Echo reduction (ER) measurement . 27
9.1 Normal incidence . 27
9.2 Oblique incidence . 29
10 Backscatter coefficient measurement. 29
Bibliography . 31
Figure 1 – Schematic showing diffractive spreading between source and receiving
transducers . 14
Figure 2 – Illustration of a typical TDS system . 17
Figure 3 – Development and signal processing for a compensated frequency
modulated signal . 17
Figure 4 – Pulse dispersion in absorbing media . 19
Figure 5 – The additional diffractive spreading encountered in through transmission
measurements . 21
Figure 6 – Source and receiving transducers immersed in a fluid medium to be
characterized . 22
Figure 7 – Source, receiver and sample all immersed in a coupling fluid . 24
Figure 8 – Multiple echoes that are clearly separated in time . 25
Figure 9 – Multiple reflection and transmission phenomena occurring at the surfaces of
a sample . 26
Figure 10 – Schematic presentation of a measurement set-up used to determine the
echo reduction of a test material . 27
– 4 – IEC TS 63081:2019 ® IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ULTRASONICS – METHODS FOR THE CHARACTERIZATION OF THE
ULTRASONIC PROPERTIES OF MATERIALS
FOREWORD
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IEC TS 63081, which is a Technical Specification, has been prepared by IEC technical
committee 87: Ultrasonics
The text of this Technical Specification is based on the following documents:
DTS Report on voting
87/718/DTS 87/725/RVDTS
Full information on the voting for the approval of this Technical Specification can be found in
the report on voting indicated in the above table.
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– 6 – IEC TS 63081:2019 ® IEC 2019
INTRODUCTION
Many ultrasonic measurement standards contain requirements for the properties of acoustic
materials to be used to construct the measurement equipment relied upon within those
...
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