IEC TS 63081:2019

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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+ Italic.
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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
...