ISO 16831:2012
(Main)Non-destructive testing — Ultrasonic testing — Characterization and verification of ultrasonic thickness measuring equipment
Non-destructive testing — Ultrasonic testing — Characterization and verification of ultrasonic thickness measuring equipment
ISO 16831:2012 specifies methods and acceptance criteria for assessing the performance of instruments for measuring thickness using pulse-echo ultrasound. ISO 16831:2012 covers both direct (digital) reading and waveform display types using single or dual element probes. ISO 16831:2012 can be used for verifying equipment covered by EN 12668 when used for thickness measurement.
Essais non destructifs — Contrôle par ultrasons — Caractérisation et vérification des appareils de mesure de l'épaisseur par ultrasons
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INTERNATIONAL ISO
STANDARD 16831
First edition
2012-04-01
Non-destructive testing — Ultrasonic
testing — Characterization and
verification of ultrasonic thickness
measuring equipment
Essais non destructifs — Contrôle par ultrasons — Caractérisation et
vérification des appareils de mesure de l'épaisseur par ultrasons
Reference number
©
ISO 2012
© ISO 2012
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ii © ISO 2012 – All rights reserved
Contents Page
Foreword .v
Introduction .vi
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 General requirements for compliance.1
5 Manufacturer's technical specification for ultrasonic thickness measuring equipment.2
5.1 General .2
5.2 General attributes.2
5.3 Display.2
5.4 Transmitter.3
5.5 Receiver.3
5.6 Other information .3
6 Calibration blocks .3
6.1 General .3
6.2 Material .3
6.3 Shape and size.4
7 Performance requirements for ultrasonic thickness measuring equipment .5
8 Probes.6
9 Group 1 tests .7
9.1 General .7
9.2 Equipment required for Group 1 tests .7
9.3 Stability against temperature .7
9.4 Low battery warning.7
9.5 Battery operational time .8
9.6 Operational voltage range .8
9.7 Operational current range .8
9.8 Operational temperature range.9
9.9 Pulse repetition frequency, PRF .9
9.10 Transmitter pulse shape, rise-time and peak voltage .9
9.11 Receiver frequency range of operation.11
9.12 Minimum and maximum measurable thicknesses.11
9.13 Accuracy and resolution.11
9.14 Range of velocity setting (calibration) .11
9.15 Calibration mechanisms.11
9.16 Calibration setting storage.12
9.17 Data storage.12
9.18 Printing .12
9.19 Display and recall .13
9.20 Display response time .13
10 Group 2 tests .13
10.1 General .13
10.2 Equipment required for Group 2 tests .13
10.3 General characteristics.14
10.4 General mechanical state and external aspects .14
11 Group 3 tests .14
11.1 General .14
11.2 General mechanical state and external aspects .14
11.3 Calibration mechanisms.14
11.4 Calibration setting storage .14
11.5 Data storage .15
Bibliography .16
iv © ISO 2012 – All rights reserved
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 16831 was prepared by Technical Committee ISO/TC 135, Non-destructive testing, Subcommittee SC 3,
Ultrasonic testing.
Introduction
This International Standard is based on EN 15317:2007, Non-destructive testing — Ultrasonic testing —
Characterization and verification of ultrasonic thickness measuring equipment.
The following International Standards are linked.
ISO 16810, Non-destructive testing — Ultrasonic testing — General principles
ISO 16811, Non-destructive testing — Ultrasonic testing — Sensitivity and range setting
ISO 16823, Non-destructive testing — Ultrasonic testing — Transmission technique
ISO 16826, Non-destructive testing — Ultrasonic testing — Examination for discontinuities perpendicular to
the surface
ISO 16827, Non-destructive testing — Ultrasonic testing — Characterization and sizing of discontinuities
ISO 16828, Non-destructive testing — Ultrasonic testing — Time-of-flight diffraction technique as a method for
detection and sizing of discontinuities
viii © ISO 2012 – All rights reserved
INTERNATIONAL STANDARD ISO 16831:2012(E)
Non-destructive testing — Ultrasonic testing —
Characterization and verification of ultrasonic thickness
measuring equipment
1 Scope
This International Standard specifies methods and acceptance criteria for assessing the performance of
instruments formeasuring thickness using pulse-echo ultrasound.
This International Standard covers both direct (digital) reading and waveform display types using single or
dual element probes.
This International Standard can be used for verifying equipment covered by EN 12668 when used for
thickness measurement.
2 Normative references
The following referenced documents are indispensable for the application 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 inspection — Vocabulary
EN 1330-4, Non destructive testing — Terminology — Part 4 : Terms used in ultrasonic testing
EN 10025-2, Hot rolled products of structural steels — Part 2 : Technical delivery conditions for non-alloy
structural steels
EN 12668-2, Non-destructive testing — Characterization and verification of ultrasonic examination
equipment — Part 2: Probes
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5577 and EN 1330-4 apply.
4 General requirements for compliance
Ultrasonic thickness measuring equipment complies with this standard if it satisfies all the following conditions:
a) ultrasonic instrument and probe comply with the technical requirements of this standard;
b) either a declaration of conformity, issued by an organization certified in accordance with ISO 9001; or
a certificate issued by an organization accredited according to ISO/IEC 17050-1 and ISO/IEC 17050-2, or
a test report issued by an organization performing in-house calibration;
c) ultrasonic instrument and probe are clearly marked to identify the manufacturer, type and series, and
carr\ a unique serial number;
d) user instruction manual for the particular type and series of the ultrasonic equipment is available;
e) manufacturer's technical specification for the appropriate type and series of ultrasonic equipment which
defines the performance criteria in accordance with this standard is available.
NOTE The manufacturer's technical specification does not in itself constitute the certificate of measured values
required in b).
5 Manufacturer's technical specification for ultrasonic thickness measuring
equipment
5.1 General
The manufacturer's technical specification for a particular model of ultrasonic thickness measuring equipment
shall contain, as a minimum, the information listed in 5.2 to 5.5. Values obtained from the tests described in
Clause 7 shall be quoted as nominal values with tolerances given as indicated.
5.2 General attributes
The following shall be detailed:
a) size;
b) mass (at an operational stage);
c) type(s) of power supply;
d) type(s) of probe sockets;
e) battery operational time (as new, at maximum power consumption with a specified duty cycle);
f) temperature and
...
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