oSIST prEN ISO 18563-3:2023

Non-destructive testing - Characterization and verification of ultrasonic phased array equipment - Part 3: Complete systems (ISO/DIS 18563-3:2023)

ISO 18563-3:2015 addresses ultrasonic test systems implementing linear phased array probes, in contact (with or without wedge) or in immersion, with centre frequencies in the range of 0,5 MHz?10 MHz.
It provides methods and acceptance criteria for verifying the performance of combined equipment (i.e. instrument, probe and cables connected). The methods described are suitable for users working under on-site or shop floor conditions. Its purpose is for the verification of the correct operation of the system prior to testing, and also the characterization of sound beams or verification of the absence of degradation of the system.
The methods are not intended to prove the suitability of the system for particular applications, but are intended to prove the capability of the combined equipment to generate ultrasonic beams according to the settings used.
The calibration of the system for a specific application is outside of the scope of part of ISO 18563 and it is intended that it be covered by the test procedure.
ISO 18563-3:2015 does not address the following:
- encircling arrays;
- series of apertures having a different number of elements;
- different settings for transmitting and receiving (e.g. active aperture, number of active elements, delays);
- techniques using post-processing of the signals of individual elements in a more complex manner than a simple delay law (e.g. full matrix capture).

Zerstörungsfreie Prüfung - Charakterisierung und Verifizierung der Ultraschall-Prüfausrüstung mit phasengesteuerten Arrays - Teil 3: Vollständige Prüfsysteme (ISO/DIS 18563-3:2023)

Dieses Dokument beschreibt Ultraschallprüfsysteme für die Prüfung mit Array-Prüfköpfen für die Kontakttechnik (mit oder ohne Vorsatzkeil) oder für die Tauchtechnik mit Mittenfrequenzen im Bereich von 0,5 MHz bis 10 MHz.
Dieses Dokument legt Verfahren und Zulässigkeitskriterien zur Feststellung der Konformität vollständiger Prüfsysteme fest (d. h. Prüfgerät, Prüfkopf, Vorsatzkeil und Verbindungskabel angeschlossen). Es soll den ordnungsgemäßen Betrieb des Prüfsystems vor der Prüfung verifizieren oder verifizieren, dass sich die Leistung des Prüfsystems nicht verschlechtert hat.
Diese Verfahren sind nicht dafür vorgesehen die Eignung des Prüfsystems für besondere Anwendungen nachzuweisen, sondern sind dafür vorgesehen nachzuweisen, dass mit dem (für eine Anwendung verwendeten) vollständigen Prüfsystem den angewandten Einstellungen entsprechend korrekt gearbeitet werden kann. Die Prüfungen können an einzelnen Ultraschallbündeln (bei der Phased-Array-Technik, siehe 9.4.4) oder an den resultierenden Bildern (bei der Phased-Array-Technik und der Technik der vollständigen Fokussierung, siehe 9.4.3) durchgeführt werden.
Die Prüfungen können auf die Funktionen beschränkt werden, die für eine bestimmte Anwendung vorgesehen sind.
Die Kalibrierung des Systems für eine bestimmte Anwendung sowie die Charakterisierung und Verifizierung der mechanischen Abtastausrüstung werden in diesem Dokument nicht behandelt. Es ist vorgesehen, dass diese Punkte durch die Prüfdurchführung abgedeckt werden.
Dieses Dokument befasst sich nicht mit den Konfigurationen von Prüfköpfen, die die Tandemtechnik verwenden.
Die Charakterisierung von Schallbündeln, wie sie für tote Elemente oder für fundierteres Wissen über Schallbündel empfohlen wird, ist in Anhang A dargestellt. Das Dokument ist nicht anwendbar auf die Signalverarbeitungstechnik mit Arrays.
ANMERKUNG   Sofern nicht anders angegeben, beziehen sich die Begriffe „TFM“ und „TFM-Technik“ in diesem Dokument auf die Technik der vollständigen Fokussierung (TFM, en: total focusing technique), wie in ISO 23243 definiert, und auf verwandte Techniken, siehe z. B. ISO 23865 und ISO 23243.

Essais non destructifs - Caractérisation et vérification de l’appareillage ultrasonore multiélément - Partie 3: Système complet (ISO/DIS 18563-3:2023)

ISO 18563-3:2015 concerne l'appareillage d'essais par ultrasons équipé de traducteurs linéaires multiéléments, en contact (avec ou sans sabot) ou en immersion, avec des fréquences centrales comprises entre 0,5 MHz et 10 MHz.
Elle décrit les méthodes et les critères d'acceptation applicables à la vérification des performances de l'équipement complet (à savoir appareil, traducteur et câbles connectés). Les méthodes décrites conviennent aux utilisateurs travaillant sur site ou en usine. L'objectif de la présente partie est de vérifier le bon fonctionnement du système avant les essais, et également de caractériser les faisceaux acoustiques ou de vérifier l'absence de dégradation du système.
Les méthodes ne sont pas destinées à démontrer l'adéquation du système avec des applications particulières mais à confirmer l'aptitude du système complet à générer des faisceaux acoustiques en fonction des réglages utilisés.
L'étalonnage du système pour une application spécifique ne fait pas partie du domaine d'application de la présente partie de l'ISO 18563 et est censé être couvert par le mode opératoire d'essai.
ISO 18563-3:2015 ne concerne pas les cas suivants :
- réseaux encerclants ;
- séries d'ouvertures ayant différents nombres d'éléments ;
- différents réglages pour l'émission et la réception (par exemple, ouverture active, nombre d'éléments actifs, retards) ;
- techniques utilisant le post-traitement des signaux d'éléments individuels de manière plus complexe qu'une simple loi de retards (par exemple, acquisition de la matrice intégrale).

Neporušitveno preskušanje - Ugotavljanje značilnosti in preverjanje ultrazvočne opreme faznih sistemov - 3. del: Kombinirani sistemi (ISO/DIS 18563-3:2023)

General Information

• Status: Not Published
• Public Enquiry End Date: 29-Jun-2023
• ICS: 19.100 - Non-destructive testing
• Technical Committee: PKG - Testing of metallic materials
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 19-Apr-2023
• Due Date: 06-Sep-2023
• Completion Date: 03-Aug-2023
• Ref Project: prEN ISO 18563-3 - Non-destructive testing - Characterization and verification of ultrasonic phased array equipment - Part 3: Complete systems (ISO/DIS 18563‑3:2023)

Relations

• Revised: SIST EN ISO 18563-3:2016 - Non-destructive testing - Characterization and verification of ultrasonic phased array equipment - Part 3: Combined systems (ISO 18563-3:2015)
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN ISO 18563-3:2023
01-junij-2023
Neporušitveno preskušanje - Ugotavljanje značilnosti in preverjanje ultrazvočne
opreme faznih sistemov - 3. del: Kombinirani sistemi (ISO/DIS 18563-3:2023)
Non-destructive testing - Characterization and verification of ultrasonic phased array
equipment - Part 3: Complete systems (ISO/DIS 18563-3:2023)
Zerstörungsfreie Prüfung - Charakterisierung und Verifizierung der Ultraschall-
Prüfausrüstung mit phasengesteuerten Arrays - Teil 3: Vollständige Prüfsysteme
(ISO/DIS 18563-3:2023)
Essais non destructifs - Caractérisation et vérification de l’appareillage ultrasonore
multiélément - Partie 3: Système complet (ISO/DIS 18563-3:2023)
Ta slovenski standard je istoveten z: prEN ISO 18563-3
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
oSIST prEN ISO 18563-3:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 18563-3:2023

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oSIST prEN ISO 18563-3:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 18563-3
ISO/TC 135/SC 3 Secretariat: DIN
Voting begins on: Voting terminates on:
2023-04-12 2023-07-05
Non-destructive testing — Characterization and
verification of ultrasonic phased array equipment —
Part 3:
Complete systems
ICS: 19.100
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
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NATIONAL REGULATIONS.
ISO/DIS 18563-3:2023(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
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NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023

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oSIST prEN ISO 18563-3:2023
ISO/DIS 18563-3:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 18563-3
ISO/TC 135/SC 3 Secretariat: DIN
Voting begins on: Voting terminates on:

Non-destructive testing — Characterization and
verification of ultrasonic phased array equipment —
Part 3:
Complete systems
ICS: 19.100
This document is circulated as received from the committee secretariat.
COPYRIGHT PROTECTED DOCUMENT
THIS DOCUMENT IS A DRAFT CIRCULATED
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© ISO 2023
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NOT BE REFERRED TO AS AN INTERNATIONAL
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IN ADDITION TO THEIR EVALUATION AS
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CH-1214 Vernier, Geneva
POTENTIAL TO BECOME STANDARDS TO
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NATIONAL REGULATIONS.
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ii
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PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023

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oSIST prEN ISO 18563-3:2023
ISO/DIS 18563-3:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols . 2
5 General requirements for conformity . 3
5.1 General . 3
5.2 Reference system . 3
5.3 Identical system . 3
5.4 Periodic check . 3
6 Qualification of test personnel .4
7 Modes of operation for phased array techniques . 4
8 Equipment required for tests .6
9 Tests to be performed .6
9.1 General . 6
9.2 Visual inspection of the equipment . 8
9.2.1 General . 8
9.2.2 Procedure . 8
9.2.3 Acceptance criteria . 8
9.2.4 Reporting . 8
9.3 Check of elements and channels . 8
9.3.1 General . 8
9.3.2 Channel assignment . 8
9.3.3 Relative sensitivity of elements, reference amplitude and dead elements . 10
9.4 Verification of correct operation .12
9.4.1 General .12
9.4.2 Amplification system .12
9.4.3 Verification of correct operation by using imaging .15
9.4.4 Verification of correct operation by measuring angle of refraction and
probe index point . 18
9.4.5 Skew angle . 22
9.5 Other verifications . 23
9.5.1 Squint angle .23
9.5.2 Grating lobes (recommended) . 23
10 System record sheet .24
Annex A (informative) Characterization of sound beams.25
Bibliography .34
iii
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oSIST prEN ISO 18563-3:2023
ISO/DIS 18563-3:2023(E)
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 of the voluntary nature of standards, 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
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 135 Non-destructive testing, Subcommittee
SC 3 Ultrasonic testing.
This second edition cancels and replaces the first edition (ISO 18563:2015), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— integration of matrix array probes;
— deletion of group 1 and 2 tests;
— addition of a chapter dealing with the use of imaging for complete system verification (9.4.3) as a
simplification for a more functional standard (characterisation of beams moved to Annex A);
— addition of signal processing techniques using arrays (e.g. TFM) in the scope.
A list of all parts in the ISO 18563 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
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oSIST prEN ISO 18563-3:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 18563-3:2023(E)
Non-destructive testing — Characterization and
verification of ultrasonic phased array equipment —
Part 3:
Complete systems
1 Scope
This document addresses ultrasonic test systems implementing array probes, for contact technique
(with or without wedge) or for immersion technique, with centre frequencies in the range of 0,5 MHz–
10 MHz.
It provides methods and acceptance criteria for determining the compliance of the combined equipment
(i.e. instrument, probe, wedge and cables connected). Its purpose is for the verification of the correct
operation of the system prior to testing or verification of the absence of degradation of the system.
The methods are not intended to prove the suitability of the system for particular applications but are
intended to prove the capability of the complete system (used for an application) to operate correctly
according to the settings used. Tests can be performed on individual ultrasonic beams (for phased array
technique, see 9.4.4) or on resulting images (for phased array technique and total focusing technique,
see 9.4.3).
The tests can be limited to the functions that are intended to be used for a certain application.
This document does not cover the calibration of the system for a specific application and the
characterization and verification of the mechanical scanning equipment. It is intended that these items
will be covered by the test operating procedure.
This document does not address the configurations of probes using the tandem technique.
The characterization of beams, as recommended for dead elements or for more in-depth knowledge of
the beams, is presented in Annex A. It is not applicable for signal processing technology using arrays.
NOTE Unless stated otherwise, in this document ‘TFM’ and ‘TFM technique’ refer to the total focusing
technique as defined in ISO 23243, and to related techniques, see for example ISO 23865 and ISO 23243.
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 9712, Non-destructive testing — Qualification and certification of NDT personnel
ISO 18563-1, Non-destructive testing — Characterization and verification of ultrasonic phased array
equipment — Part 1: Instruments
ISO 18563-2, Non-destructive testing — Characterization and verification of ultrasonic phased array
equipment — Part 2: Probes
ISO 19675, Non-destructive testing — Ultrasonic testing — Specification for a calibration block for phased
array testing (PAUT)
1
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oSIST prEN ISO 18563-3:2023
ISO/DIS 18563-3:2023(E)
ISO 22232-3, Non-destructive testing — Characterization and verification of ultrasonic test equipment —
Part 3: Combined equipment
ISO 23243, Non-destructive testing — Ultrasonic testing with arrays — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5577, ISO 23243 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
combined equipment
connected set including the instrument, the array probe (with wedge if applicable) and connecting
cables, including adapters
[SOURCE: ISO 23243:2020. Modified – array and wedge added]
3.2
complete system
combined equipment including the settings for a given mode of operation
Note 1 to entry: Settings are specific values or ranges of values, e.g. electronic scanning or steering range.
3.3
reference system
complete system including an instrument according to ISO 18563-1 and a probe initially according
to ISO 18563-2, on which all of the applicable tests defined in Clause 9 of this document have been
performed successfully
3.4
identical system
complete system in which instruments, probes, wedges, connecting cables and the settings for a given
mode of operation are identical to those of the reference system
Note 1 to entry: components are identical if from the same manufacturer and the same model
3.5
system record sheet
document for reporting the results for a complete system which enables a comparison with the values
obtained from the reference system
4 Symbols
For the purposes of this document, the symbols given in Table 1 apply.
Table 1 — Symbols
Symbol Unit Definitions
λ mm Wavelength
ΔS dB Relative sensitivity of an element
el
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oSIST prEN ISO 18563-3:2023
ISO/DIS 18563-3:2023(E)
TTaabblle 1 e 1 ((ccoonnttiinnueuedd))
Symbol Unit Definitions
Contact technique: reduced projected sound path length
a mm
i Immersion technique: distance between the orthogonal projection of the axis of the
side-drilled hole on the test surface and the centre of the probe surface
A V or % FSH Amplitude of one elementary signal
el
A V or % FSH Maximum value of the amplitudes of all elementary signals
max
A V or % FSH Median value of the amplitudes of all elementary signals
ref
Minimum value of the amplitudes of all elementary signals, excluding the dead ele-
A V or % FSH
min
ments
Distance between the centre of a side-drilled hole and the point of maximum ampli-
D mm
CM
tude of the indication of this hole
D mm Diagonal of the active aperture
(X ; Z ) mm; mm Coordinate of the position of maximum amplitude of an indication
M M
G dB Reference gain
ref
N mm Near-field length associated with the active aperture
Θ ° Angle of refraction
p mm Pitch
X mm Distance between the probe front surface and the probe index point
5 General requirements for conformity
5.1 General
All following tests shall be performed with an instrument that complies with ISO 18563-1 and an array
that initially complied with ISO 18563-2.
The tests can be limited to the functions that are intended to be used for a certain application, e.g. used
channels of the instrument or used part of the array or specific settings for a given mode of operation.
When all required tests have been successfully conducted, the complete system is considered to
conform to this document and may be used as a reference system.
5.2 Reference system
a) The tests to be performed prior to the first use of a complete system are described in Table 4.
The results of the measurements made on the reference system are the base values.
b) A system record sheet of these base values shall be created.
5.3 Identical system
a) When an identical system is created, and/or when using other channels of the instrument and
duplicating the settings, or after a maintenance operation, the same tests shall be performed again.
b) The results of the measurements made on the identical system shall be recorded in the system
record sheet and compared against the base values.
5.4 Periodic check
a) For a periodic check of correct operation of the system, the same tests shall be performed.
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oSIST prEN ISO 18563-3:2023
ISO/DIS 18563-3:2023(E)
b) The frequency of checking of the complete system shall be specified in the procedure, e. g. before
starting and at the end of the non-destructive testing or daily.
c) The system record sheet shall be updated after each periodic check.
6 Qualification of test personnel
Personnel performing the verifications in accordance with this document shall be qualified to an
appropriate level in ultrasonic testing in accordance with ISO 9712 or equivalent.
In addition to general knowledge of ultrasonic testing, the operators shall be familiar with, and have
practical experience in, the use of ultrasonic phased arrays or TFM techniques.
7 Modes of operation for phased array techniques
This clause is not applicable for signal processing techniques using arrays, e.g. TFM.
This clause is applicable for phased array techniques based on beams by using a set of delay laws for
multiple array elements during transmission and/or reception.
Depending on the application, the following options of the phased array technique may be used:
— number of active apertures (one or multiple);
— number of shots or delay laws (one or multiple) per active aperture;
— type of delay law (beam steering, beam focusing or combined setting).
The six most common modes of operation for phased array techniques are defined in Table 2.
Examples of modes of operation for phased array techniques are illustrated in Table 3.
Table 2 — Definition of modes of operation for phased array techniques
Identical or
Number Number of delay
different set of Array orienta-
Modes of active laws per active Resulting beam(s)
delay laws for each tion
apertures aperture
aperture
Not applicable
Mode 1 One One Not relevant One beam
(only one aperture)
Not applicable Multiple beams from one
Mode 2 One Multiple Not relevant
(only one aperture) active aperture
One beam from each active
Array parallel to
Mode 3 Multiple One Identical aperture, all beams are iden-
the test surface
tical
Multiple beams from each ac-
Array parallel to
Mode 4 Multiple Multiple Identical tive aperture, beams are iden-
the test surface
tical for all active apertures
Array not par-
One beam from each active
Identical allel to the test
Mode 5 Multiple One aperture, beams are different
surface
for each active aperture
Different Not relevant
Array not par-
Multiple beams from each
Identical allel to the test
active aperture, beams are
Mode 6 Multiple Multiple
surface
different for each active
aperture
Different Not relevant
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oSIST prEN ISO 18563-3:2023
ISO/DIS 18563-3:2023(E)
Considering these different modes of operation and their resulting beams, the number of beams or
images to be tested is described in Table 4.
Table 3 — Examples of modes of operation for phased array techniques
Modes Examples
Mode 1
Mode 2
Mode 3
Mode 4
Mode 5
Mode 6
NOTE 1 For simplicity, only the beam centre lines are indicated. An arrow indicates the beam direction, dots indicate focal
points.
NOTE 2 The medium between the array and the test object may be a fluid (immersion) or a solid (e.g. wedge).
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oSIST prEN ISO 18563-3:2023
ISO/DIS 18563-3:2023(E)
8 Equipment required for tests
The equipment required for the tests of the complete system includes:
a) suitable reference block(s);
b) measurement devices for the length to ±0,5 mm and for the angle to ±1°.
9 Tests to be performed
9.1 General
a) Before performing the tests, the equipment settings shall be made according to the array and
wedge that are in use for the application.
b) For applications where only a part of the array is used, the tests can be limited to this part. In that
case the results of the tested parts of the array shall be recorded on the system record sheet.
Table 3 describes the various tests to be conducted on a complete system based on the different modes
of operation for phased array techniques.
The last column of Table 3 describes the various tests to be conducted on a complete system in case of
signal processing techniques using arrays. For conciseness it is named TFM mode.
For tests where Table 3 indicates that it is required to verify at least three beams, apertures or
presentations, this means at least the median and both extreme situations shall be verified.
For the phased array technique, tests can be performed either on individual ultrasonic beams or on
resulting images, if applicable.
For the total focusing technique, tests can only be performed on resulting images, because no individual
ultrasonic beams are available.
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oSIST prEN ISO 18563-3:2023
ISO/DIS 18563-3:2023(E)
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Table 4 — Tests to be performed
Mode 2 Mode 2
Items Test and clause Mode 1 Mode 3 Mode 4 Mode 5 Mode 6 TFM mode
Example a Example b
Visual inspection of the
Visual inspec-
equipment Required
tion
9.2
Channel assignment
Required for used channels
9.3.2
Relative sensitivity of
Elements and
elements, reference
channels
amplitude and dead Required for used channels
elements
9.3.3
Amplification system
Required for used channels
9.4.2
L-scan
a
Using imaging Not appli- S-scan pres- L-scan pres- At least one L-scan or S-scan At least three L-scan or
Not applicable or S-scan TFM image
b
9.4.3 cable entation entation presentation S-scan presentations
presentation
Angle of refraction and
At least the three following At least three
Correct opera- probe index point meas- — at least three apertures
c a beams: first shot of first aper- apertures: b
tion urements , and
At least three
b
Used beam At least 3 beams ture, last shot of last aperture extreme and Not applicable
9.4.4 b
apertures
— for each of these apertures,
and median shot of median median posi-
b
Skew angle three beams
aperture tions
9.4.5
Characterization of
sound beams Optional Not applicable
Annex A
Squint angle
Required
9.5.1
Other verifica-
tions
Grating lobes
Optional
9.5.2
a
Verification of correct operation is either done by using imaging (9.4.3) or by measuring angle of refraction and probe index point (9.4.4).
b
Verifications shall be done for extreme and median positions or apertures or beams.
c
For matrix array probes generating beams with skew angles, the verifications shall be performed in the extreme and median deflection planes

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oSIST prEN ISO 18563-3:2023
ISO/DIS 18563-3:2023(E)
9.2 Visual inspection of the equipment
9.2.1 General
This general appearance inspection checks that there is no degradation.
This inspection shall be performed on a periodic basis.
9.2.2 Procedure
a) Visually inspect the ultrasonic instrument from outside, the probes, the cables and the connectors
in order to detect any sign of damage or wear that may affect both the current operation of the
system and its long-term reliability.
b) In particular, inspect the probe wedge and the active face of the probe.
If the probe is made out of various components, verify that they are correctly assembled.
c) Check the wedge dimensions by measuring with a ruler to detect any unacceptable wear.
9.2.3 Acceptance criteria
All the components of the system shall not show any visible sign of damage or wear that influences the
beam characteristics or imaging.
9.2.4 Reporting
The settings and results of the test shall be recorded or appended to the system record sheet.
9.3 Check of elements and channels
9.3.1 General
These tests are to ensure proper connection of the probe to the instrument and correct operation of the
probe once connected.
The tests address:
a) the verification of channel/element assignment for transmission and reception, and the capability
of the instrument to perform the electronic switching operations necessary to activate individual
elements successively;
b) the measurement of the relative sensitivity of the probe elements, and the reference amplitude;
c) the identification of any failing component (e.g. dead elements).
9.3.2 Channel assignment
9.3.2.1 Proc
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