SIST EN ISO 22232-2:2020

SLOVENSKI STANDARD
oSIST prEN ISO 22232-2:2018
01-oktober-2018
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Non-destructive testing - Characterization and verification of ultrasonic test equipment -
Part 2: Probes (ISO/DIS 22232-2:2018)
Zerstörungsfreie Prüfung - Charakterisierung und Verifizierung der Ultraschall-
Prüfausrüstung - Teil 2: Prüfköpfe (ISO/DIS 22232-2:2018)
Essais non destructifs - Caractérisation et vérification de l'appareillage de contrôle par
ultrasons - Partie 2: Traducteurs (ISO/DIS 22232-2:2018)
Ta slovenski standard je istoveten z: prEN ISO 22232-2
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
oSIST prEN ISO 22232-2:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 22232-2:2018

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oSIST prEN ISO 22232-2:2018
DRAFT INTERNATIONAL STANDARD
ISO/DIS 22232-2
ISO/TC 135/SC 3 Secretariat: DIN
Voting begins on: Voting terminates on:
2018-07-19 2018-10-11
Non-destructive testing — Characterization and
verification of ultrasonic test equipment —
Part 2:
Probes
Essais non destructifs — Caractérisation et vérification de l'appareillage de contrôle par ultrasons —
Partie 2: Traducteurs
ICS: 19.100
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 22232-2:2018(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2018

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oSIST prEN ISO 22232-2:2018
ISO/DIS 22232-2:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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Phone: +41 22 749 01 11
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Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

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Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 General requirements of conformity . 3
6 Technical information for probes . 4
6.1 General . 4
6.2 Probe data sheet . 4
6.3 Probe test report . 4
7 Test equipment. 5
7.1 Electronic equipment . 5
7.2 Test blocks and other equipment . 6
8 Performance requirements for probes . 8
8.1 Physical aspects . 8
8.1.1 Method . 8
8.1.2 Acceptance criterion . 8
8.2 Pulse shape, amplitude and duration . 8
8.2.1 Method . 8
8.2.2 Acceptance criterion . 9
8.3 Pulse spectrum and bandwidth . 9
8.3.1 Method . 9
8.3.2 Acceptance criteria . 9
8.4 Pulse-echo sensitivity . 9
8.4.1 Method . 9
8.4.2 Acceptance criterion .10
8.5 Distance-amplitude curve .10
8.5.1 Method .10
8.5.2 Acceptance criterion .11
8.6 Beam parameters for immersion probes .11
8.6.1 General.11
8.6.2 Beam profile — Measurements performed directly on the beam.12
8.6.3 Beam profile — Measurements made using an automated scanning system .14
8.7 Beam parameters for contact, straight-beam, single-transducer probes.15
8.7.1 General.15
8.7.2 Beam divergence and side lobes .15
8.7.3 Squint angle and offset .16
8.7.4 Focal distance (near field length) .17
8.7.5 Focal width .18
8.7.6 Length of the focal zone .18
8.8 Beam parameters for contact, angle-beam, single-transducer probes .18
8.8.1 General.18
8.8.2 Index point .19
8.8.3 Beam angle and beam divergence.19
8.8.4 Squint angle and offset .20
8.8.5 Focal distance (near field length) .21
8.8.6 Focal width .21
8.8.7 Length of focal zone .22
8.9 Beam parameters for contact, straight beam, dual-element probes .22
8.9.1 General.22
8.9.2 Crosstalk.22
8.9.3 Delay line delay .23
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8.9.4 Distance to sensitivity maximum (focal distance) .23
8.9.5 Axial sensitivity range (focal zone) .23
8.9.6 Lateral sensitivity range (focal width) .24
8.10 Beam parameters for contact angle-beam, dual-element probes .25
8.10.1 General.25
8.10.2 Crosstalk.25
8.10.3 Index point .25
8.10.4 Beam angle and profiles .25
8.10.5 Wedge delay .26
8.10.6 Distance to sensitivity maximum (focal distance) .26
8.10.7 Axial sensitivity range (length of the focal zone).26
8.10.8 Lateral sensitivity range (focal width) .26
9 Figures .27
Annex A (normative) Calculation of the near field length of non-focusing probes .44
Annex B (informative) Calibration block for angle-beam probes .47
Annex C (normative) Determination of time-of-flight (TOF) beam profiles .51
Annex D (informative) Determination of delay line and wedge delays .53
Bibliography .54
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oSIST prEN ISO 22232-2:2018
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Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO's adherence to the World Trade Organization (WTO) principles in the
Technical Barriers to Trade (TBT) see the following URL: www .iso .org/iso/foreword .html.
The committee responsible for this document is ISO/TC 135 Non-destructive testing, SC 3 Ultrasonic
testing.
ISO 22232 consists of the following parts, under the general title Non-destructive testing —
Characterization and verification of ultrasonic test equipment:
— Part 1: Instruments;
— Part 2: Probes;
— Part 3: Combined equipment.
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oSIST prEN ISO 22232-2:2018

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oSIST prEN ISO 22232-2:2018
DRAFT INTERNATIONAL STANDARD ISO/DIS 22232-2:2018(E)
Non-destructive testing — Characterization and
verification of ultrasonic test equipment —
Part 2:
Probes
1 Scope
This document covers probes used for non-destructive ultrasonic testing in the following categories
with centre frequencies in the range 0,5 MHz to 15 MHz, focusing or without focusing means:
a) single- or dual-transducer contact probes generating longitudinal or transverse waves;
b) single-transducer immersion probes.
Where material-dependent ultrasonic values are specified in this document they are based on
steels having a sound velocity of (5 920 ± 50) m/s for longitudinal waves, and (3 255 ± 30) m/s for
transverse waves.
Periodic tests for probes are not included in this document. Routine tests for the verification of probes
using on-site methods are given in ISO 22232-3.
If parameters in addition to those specified in ISO 22232-3 are to be verified during the probe’s life time,
as agreed upon by the contracting parties, the methods of verification for these additional parameters
should be selected from those given in this document.
Ultrasonic phased array probes are not included in this document, see ISO 18563-2.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 5577, Non-destructive testing — Ultrasonic testing — Vocabulary
ISO 7963, Non-destructive testing — Ultrasonic testing --- Specification for calibration block No. 2
ISO 22232-1, Non-destructive testing — Characterization and verification of ultrasonic test equipment —
Part 1: Instruments
ISO/IEC 17050-1:2004, Conformity assessment — Supplier's declaration of conformity — Part 1: General
requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5577 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http: //www .electropedia .org/
— ISO Online browsing platform: available at http: //www .iso .org/obp
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3.1
horizontal plane of a sound beam
plane perpendicular to the vertical plane of the sound beam including the beam
axis in the material
3.2
peak-to-peak amplitude
h
maximum deviation between the largest positive and the largest negative amplitudes of the pulse
Note 1 to entry: See Figure 1.
3.3
probe data sheet
document giving manufacturer's technical specifications of the same type of probes
Note 1 to entry: The data sheet need not necessarily be a test certificate of performance.
3.4
probe test report
document showing compliance with this document giving the measured values of the required
parameters of one specific probe, including test equipment and conditions
3.5
reference side
reference side is the right side of an angle-beam probe looking in the direction of the beam, unless
otherwise specified by the manufacturer
3.6
squint angle for straight-beam probes
δ
deviation between the axis of the beam and the line perpendicular to the coupling surface at the
emission point
Note 1 to entry: See Figure 2.
3.7
vertical plane of a sound beam
plane in which the sound beam axis in the probe wedge and the sound beam axis
in the test object both lie
3.8
Wear allowance
Maximum wear of the probe contact surface which does not affect the performance of the probe,
typically expressed in millimetres
4 Symbols
Table 1 — Symbols
Symbol Unit Meaning
L us Pulse duration
h % Peak-to-peak amplitude
f Hz Centre frequency
0
f Hz Upper frequency limit at -3 dB
u
f Hz Lower frequency limit at -3 dB
l
Δf Hz Frequency bandwidth in each frequency range
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Table 1 (continued)
Symbol Unit Meaning
Δ f Hz Relative bandwidth
rel
S dB Pulse echo sensitivity
N mm Near field length
0
F mm Focal distance
D
F mm Length of focal zone at -6 dB using a reflector or -3 dB using a hydrophone
L
Z mm Focal point
P
W mm Focal width on X-axis
x
W mm Focal width on Y-axis
y
mm Angle of beam divergence in X direction
Ω
X
mm Angle of beam divergence in Y direction
Ω
Y
X mm Probe index point
° Beam angle
α
δ ° Squint angle
CT dB Cross talk
5 General requirements of conformity
An ultrasonic probe complies with this document if it fulfils all of the following requirements:
a) the probe shall comply with Clause 8;
b) a declaration of conformity according to ISO 17050-1 shall be available;
c) the ultrasonic probe shall be clearly marked to identify the manufacturer, and carry a unique serial
number or show a permanent reference number from which information can be traced to the data
sheet and probe test report;
d) the probe data sheet corresponding to the ultrasonic probe shall be available, which defines the
performance criteria for the items given in Clause 6;
e) a probe test report shall be delivered together with the probe, which includes at least the test
results given in Clause 6.
Table 2 summarises the tests to be performed on ultrasonic probes.
Table 2 — List of tests for ultrasonic probes
Manufacturer’s tests
Title of test
Sub-clause
Physical aspects 8.1
Pulse shape, amplitude and duration 8.2
Pulse spectrum and bandwidth 8.3
Pulse echo sensitivity 8.4
Distance-amplitude curve 8.5
Beam parameters for immersion probes 8.6
Axial profile – focal distance and length of the focal zone 8.6.2.2
Transverse profile – focal width 8.6.2.3
Transverse profile – beam divergence 8.6.2.4
Beam profile by scanning means – focal distance and focal length 8.6.3.2
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Table 2 (continued)
Manufacturer’s tests
Title of test
Sub-clause
Beam profile by scanning means – focal width and beam divergence 8.6.3.3
Beam parameters for contact, straight-beam single-transducer probes 8.7
Beam divergence and side lobes 8.7.2
Squint angle and offset 8.7.3
Focal distance (near field length) 8.7.4
Focal width 8.7.5
Length of focal zone 8.7.6
Beam parameters for angle-beam single-transducer contact probes 8.8
Index point 8.8.2
Beam angle and beam divergence 8.8.3
Squint angle and offset 8.8.4
Focal distance (near field length) 8.8.5
Focal width 8.8.6
Length of focal zone 8.8.7
Beam parameters for contact, straight beam dual-element probes 8.9
Cross-talk 8.9.2
Distance to sensitivity maximum (focal distance) 8.9.4
Lateral sensitivity range (focal width) 8.9.6
Beam parameters for contact angle-beam, dual-element probes 8.10
Cross-talk 8.10.2
Index point 8.10.3
Beam angle and profile 8.10.4
Distance to sensitivity maximum (focal distance) 8.10.6
Axial sensitivity range (length of focal zone) 8.10.7
Lateral sensitivity range (focal width) 8.10.8
6 Technical information for probes
6.1 General
The test conditions and the equipment used for the evaluation of the probe parameters have to be listed
(see Table 3).
6.2 Probe data sheet
The probe data sheet gives the list of information to be reported for all probes within the scope of this
document (see Table 3).
6.3 Probe test report
The probe test report gives the measured values of the required parameters of one specific probe and
other information from the probe data sheet (see Table 3).
The probe test report shall include the unique serial number or the permanent reference number to
provide a uniquely assignment between the specific probe and the probe test report.
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Table 3 — List of information to be given in a probe data sheet and probe test report
Probe Probe test
Information to be given Comment
data sheet report
Manufacturer's name I I —
Probe type I I —
Probe serial number - I —
Probe housing dimensions I I —
Probe weight I I —
Type of connectors I I —
Connectors interchangeability I I Only for dual-transducer probes
Cross talk I M Only for dual-transducer probes
Transducer material I I —
Shape and size of transducer I I —
Roof angle of transducers I I Only for dual-transducer probes
Wedge material I I Only for angle-beam probes
Only for angle-beam probes, for measurement
Wedge delay I I
see Annex D
Delay line material I I Only for straight-beam probes
Only for straight-beam probes, for measurement
Delay line delay I I
see Annex D
Protection layer material I I —
Wear allowance I I —
Pulse shape I M —
Pulse spectrum I M —
Centre frequency I M —
Bandwidth I M —
Pulse duration I M —
Pulse-echo sensitivity I M —
Beam angle I M Only for angle-beam probes
Angles of divergence I I —
Only for angle-beam probes Alternatively the
Probe index point I I distance between the probe index point and the
front of the probe can be given.
Type of focus I I —
Focal distance or near field length I I —
Width of focal zone I I Only for focusing probes
Length of focal zone I I Only for focusing probes
Operating temperature range I I —
Storage temperature range I I —
DAC I - —
I = Information; M = Measurement
7 Test equipment
7.1 Electronic equipment
The ultrasonic instrument (or laboratory pulser/receiver) used for the tests specified in Clause 8 shall
be of the type designated on the probe data sheet, and shall comply with ISO 22232-1 as applicable.
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Where more than one type of ultrasonic instrument is designated the tests shall be repeated with each
of the additional designated types.
Testing shall be carried out with the probe cables and electrical matching devices specified on the
probe data sheet for use with the particular type of ultrasonic instrument.
NOTE Probe leads more than about 2 m long could have significant effect on probe performance.
In addition to the ultrasonic instrument or laboratory pulser/receiver the items of equipment essential
to assess probes in accordance with this document are as follows:
a) an oscilloscope with a minimum bandwith of 100 MHz;
b) a frequency spectrum analyser with a minimum bandwith of 100 MHz, or an oscilloscope/digitiser
or computer capable of performing Discrete Fourier Transforms (DFT).
The following additional equipment is optional:
c) For contact probes only:
1) an electromagnetic-acoustic probe (EMA) and receiver;
2) a plotter to plot directivity diagrams;
d) For immersion probes only:
1) a hydrophone receiver with an active diameter less than two times the central ultrasonic
wavelength of the probe under test but not less than 0,5 mm. The bandwidth of the hydrophone
and the amplifier shall cover the bandwidth of the probe under test.
7.2 Test blocks and other equipment
The following test blocks shall be used to carry out the specified range of tests, for contact probes only:
a) Hemicylindrical blocks with different radii (R) in the range from 12 mm to 200 mm. Steps of R 2
are recommended. Steel quality shall be as defined in ISO 7963. The length of each block shall be
equal to or larger than its radius, up to a maximum length of 100 mm. An example is shown in
Figure 4;
...