IEC 61828:2020

Ultrasonics - Transducers - Definitions and measurement methods regarding focusing for the transmitted fields

IEC 61828:2020

Name:IEC 61828:2020   Standard name:Ultrasonics - Transducers - Definitions and measurement methods regarding focusing for the transmitted fields
Standard number:IEC 61828:2020   language:English and French language
Release Date:14-Dec-2020   technical committee:TC 87 - Ultrasonics
Drafting committee:WG 6 - TC 87/WG 6   ICS number:17.140.50 - Electroacoustics

IEC 61828
Edition 2.0 2020-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Ultrasonics – Transducers – Definitions and measurement methods
regarding focsusing for the transmitted fields

Ultrasons – Transducteurs – Définitions et méthodes de mesure
pour la focalisation des champs transmis





your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et
les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de
CH-1211 Geneva 20
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and once 67 000 electrotechnical terminology entries in English and
a month by email. French extracted from the Terms and Definitions clause of IEC
publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or need CISPR.

further assistance, please contact the Customer Service

.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC - Le premier dictionnaire d'électrotechnologie en ligne au monde,
webstore.iec.ch/advsearchform avec plus de 22 000 articles terminologiques en anglais et en
La recherche avancée permet de trouver des publications IEC français, ainsi que les termes équivalents dans 16 langues
en utilisant différents critères (numéro de référence, texte, additionnelles. Egalement appelé Vocabulaire
comité d’études,…). Elle donne aussi des informations sur les Electrotechnique International (IEV) en ligne.

projets et les publications remplacées ou retirées.
Glossaire IEC - std.iec.ch/glossary
IEC Just Published - webstore.iec.ch/justpublished 67 000 entrées terminologiques électrotechniques, en anglais
Restez informé sur les nouvelles publications IEC. Just et en français, extraites des articles Termes et Définitions des
Published détaille les nouvelles publications parues. publications IEC parues depuis 2002. Plus certaines entrées
Disponible en ligne et une fois par mois par email. antérieures extraites des publications des CE 37, 77, 86 et
CISPR de l'IEC.
Service Clients - webstore.iec.ch/csc
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
[email protected] .
Electropedia - www.electropedia.org

IEC 61828
Edition 2.0 2020-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Ultrasonics – Transducers – Definitions and measurement methods

regarding focsusing for the transmitted fields

Ultrasons – Transducteurs – Définitions et méthodes de mesure

pour la focalisation des champs transmis

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.50 ISBN 978-2-8322-9019-4

– 2 – IEC 61828:2020 © IEC 2020
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Symbols . 41
5 Independent measurement of total acoustic output power . 44
6 Acoustic field measurement: equipment . 44
6.1 Hydrophone . 44
6.1.1 General . 44
6.1.2 Sensitivity of a hydrophone . 44
6.1.3 Directional response of a hydrophone . 45
6.1.4 Effective hydrophone radius . 45
6.1.5 Choice of the size of a hydrophone active element . 45
6.1.6 Hydrophone pressure limits . 46
6.1.7 Hydrophone intensity limits . 46
6.1.8 Hydrophone cable length and amplifiers . 47
6.2 Requirements for positioning and water baths . 47
6.2.1 General . 47
6.2.2 Positioning systems . 47
6.2.3 Water bath . 48
6.3 Requirements for data acquisition and analysis systems . 49
6.4 Requirements and recommendations for ultrasonic equipment being
characterized . 50
7 Measurement procedure . 50
7.1 General . 50
7.2 Preparation and alignment . 50
7.2.1 General drive and field conditions . 50
7.2.2 Initial adjustment to driving voltage . 51
7.2.3 Preparation of source transducer . 52
7.2.4 Aligning an ultrasonic transducer and hydrophone . 52
7.2.5 Finding the beam axis . 53
7.2.6 Measurements to determine field level conditions . 55
7.2.7 Determining if transducer is focusing . 56
7.2.8 Measuring other beamwidth parameters of a focusing transducer . 57
7.2.9 Measuring the beam area parameters . 58
7.2.10 Measuring additional beam maximum based parameters . 59
7.2.11 Alternative: calculation of focal parameters using numerical projection . 60
7.2.12 Plane wave transmitted fields . 61
7.2.13 Steered plane waves . 61
7.2.14 Measurements of high intensity therapeutic ultrasound fields . 61
7.2.15 Calculation of I . 62
sa
7.2.16 Further evaluation for sidelobes and pre-focal maxima . 63
7.3 Considerations for scanning transducers and transducers with multiple
sources . 65
7.3.1 Automatic scanning transducers . 65

7.4 Spatial impulse response and beamplots . 65
7.4.1 General . 65
7.4.2 Point target . 66
7.4.3 Beamplots and beam contour plots . 66
7.5 Plane wave compounding . 66
Annex A (informative) Background for the transmission/ Characteristics of focusing
transducers . 67
A.1 General . 67
A.2 Field of piston source . 68
A.3 Focusing with a lens . 68
A.4 Focusing with a concave transducer . 71
A.5 Geometric focusing gains . 73
A.6 Beamwidth estimation . 74
Annex B (informative) Rationale for focusing and nonfocusing definitions . 79
B.1 Overview. 79
B.1.1 Background information . 79
B.1.2 General . 79
B.1.3 Focusing transducers . 79
B.1.4 Focusing methods . 80
B.1.5 Known and unknown focusing transducers . 81
B.1.6 Focusing and beamwidth . 81
B.1.7 Focusing parameter definitions . 82
B.1.8 Applications of focusing definitions . 82
B.1.9 Relation of present definitions to physiotherapy transducers (treatment
heads) . 82
B.1.10 Relation of present definitions to therapeutic transducers . 82
B.2 System and measurement requirements . 83
B.2.1 General . 83
B.2.2 Transmitted pressure waveforms . 83
B.2.3 Transmitted fields .
...

  • Relates Information
  • ISO 8130-9:1992

    ISO 8130-9:1992 - Coating powders
    09-28
  • EN 352-2:2020/FprA1

    EN 352-2:2021/oprA1:2023
    09-28
  • IEC TS 61158-4:1999

    IEC TS 61158-4:1999 - Digital data communications for measurement and control - Fieldbus for use in industrial control systems - Part 4: Data Link protocol specification Released:3/24/1999 Isbn:2831847656
    09-28
  • HD 566 S1:1990

    HD 566 S1:1998
    09-28
  • ISO 5131:1982/Amd 1:1992

    ISO 5131:1982/Amd 1:1992
    09-28
  • EN 60598-2-22:1990

    EN 60598-2-22:1996
    09-27
  • ISO 8504-2:1992

    ISO 8504-2:1992 - Preparation of steel substrates before application of paints and related products -- Surface preparation methods
    09-27
  • EN 12165:2024

    prEN 12165:2022
    09-27
  • IEC TS 61158-6:1999

    IEC TS 61158-6:1999 - Digital data communications for measurement and control - Fieldbus for use in industrial control systems - Part 6: Application Layer protocol specification Released:3/24/1999 Isbn:2831847613
    09-27
  • ISO 4252:1992

    ISO 4252:1992 - Agricultural tractors -- Operator's workplace, access and exit -- Dimensions
    09-27