EN ISO 19675:2024

SLOVENSKI STANDARD
01-junij-2024
Neporušitvene preiskave - Ultrazvočne preiskave - Specifikacije kalibracijskega
bloka za testiranje faznih nizov (PAU) (ISO 19675:2017)
Non-destructive testing - Ultrasonic testing - Specification for a calibration block for
phased array testing (PAUT) (ISO 19675:2017)
Zerstörungsfreie Prüfung - Ultraschallprüfung - Festlegungen für einen Kalibrierkörper
für die Phased-Array-Prüfung (PAUT) (ISO 19675:2017)
Essais non destructifs - Contrôle par ultrasons - Spécifications relatives au bloc
d'étalonnage pour la technique multiéléments (ISO 19675:2017)
Ta slovenski standard je istoveten z: prEN ISO 19675
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 19675
First edition
2017-01
Non-destructive testing — Ultrasonic
testing — Specification for a
calibration block for phased array
testing (PAUT)
Essais non destructifs — Contrôle par ultrasons — Spécifications
relatives au bloc d’étalonnage pour la technique multiéléments
Reference number
ISO 19675:2017(E)
©
ISO 2017
ISO 19675:2017(E)
© ISO 2017, Published in Switzerland
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ii © ISO 2017 – All rights reserved

ISO 19675:2017(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 1
5 Manufacture . 2
5.1 Steel . 2
5.2 Pre-machining and heat treatment . 2
5.2.1 Raw blocks . 2
5.2.2 Heat treatment. 2
5.2.3 Checking prior to final machining. 2
5.3 Final machining . 3
5.3.1 Dimensions and surface finish . 3
5.3.2 Reference marks . 3
5.3.3 Velocity checks . 3
6 Marking . 3
7 Declaration of conformity . 6
8 Possible modifications to phased array calibration block . 6
Annex A (normative) Determination of material anisotropy . 8
Annex B (informative) Description of possible uses of the PAUT calibration block .13
Bibliography .19
ISO 19675:2017(E)
Foreword
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This document was prepared by Technical Committee ISO/IIW, International Institute of Welding,
Commission V.
Requests for official interpretations of any aspect of this document should be directed to the ISO Central
Secretariat, who will forward them to the IIW Secretariat for an official response.
iv © ISO 2017 – All rights reserved

INTERNATIONAL STANDARD ISO 19675:2017(E)
Non-destructive testing — Ultrasonic testing —
Specification for a calibration block for phased array
testing (PAUT)
1 Scope
This document specifies requirements for the dimensions, material and manufacture of a steel block for
calibrating ultrasonic test equipment used in ultrasonic testing with the phased array technique.
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
EN 16018, Non-destructive testing — Terminology — Terms used in ultrasonic testing with phased arrays
EN 10025-2, Hot rolled products of structural steels — Part 2: Technical delivery conditions for non-alloy
structural steels
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5577 and EN 16018 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
4 Abbreviated terms
ACG angle-corrected gain
FSH full-screen height
RF radio frequency
SDH side-drilled hole
SNR signal- to-noise ratio
TCG time-corrected gain
ISO 19675:2017(E)
5 Manufacture
5.1 Steel
Blocks shall be manufactured from steel grade S355J0, in accordance with EN 10025-2, or equivalent.
5.2 Pre-machining and heat treatment
5.2.1 Raw blocks
Raw blocks shall be rough-machined to a dimension of 320 mm × 120 mm × 30 mm before heat
treatment.
5.2.2 Heat treatment
The heat treatment shall consist of:
1) austenitizing at 920 °C for 30 min;
2) rapid cooling (quenching) in water;
3) tempering by heating to 650 °C for 3 h;
4) cooling in still air.
5.2.3 Checking prior to final machining
It is recommended to pre-machine the block to the following dimensions: 305 mm × 101 mm × 26,5 mm.
All external surfaces shall be pre-machined to a roughness value not greater than 1,6 μm R .
a
The pre-machined block shall be in accordance with the following.
a) It shall be free from internal discontinuities. For this purpose, an ultrasonic test shall be carried
out after heat treatment, with a longitudinal wave straight-beam probe of at least 10 MHz nominal
centre frequency and having a transducer size of 10 mm to 15 mm. The block shall be checked on
all four long faces to cover the complete volume. With the probe positioned on the largest face of
the block, the instrument’s gain shall be set to achieve a grain scatter noise of 10 % of full screen
height. No echo shall have an amplitude greater than that of the grain scatter noise;
b) It shall be isotropic for transverse and longitudinal waves proved by velocity measurements in
accordance with Annex A (see A.3). Probes shall be located around the mid-position of each of the
three faces;
c) It shall present low sound attenuation.
NOTE Absolute measurements of attenuation may be difficult to obtain because echo amplitudes depend on
many factors. The significance of attenuation can be estimated by simple qualitative tests. Relative attenuation
measurements can be made by examining the exponential decay of multiple back wall reflections [a satisfactory
attenuation generally is proven by the observation of at least four echoes above of 25 % of FSH when a probe as
recommended in 5.2.3 a) is used]. See Figure 1.
2 © ISO 2017 – All rights reserved

ISO 19675:2017(E)
Key
I initial pulse
1, 2, 3, 4…. N multiple back wall echoes
Figure 1 — Acceptable sound attenuation
5.3 Final machining
5.3.1 Dimensions and surface finish
The dimensions and tolerances of the phased array calibration block shall be determined and recorded
in accordance with Annex A (see A.2) and shall be in accordance with Figure 2. All external surfaces
shall be machined to a roughness value not greater than 0,8 μm R .
a
5.3.2 Reference marks
Permanent reference marks shall be engraved on the block in accordance with Figure 3 and Table 1.
Reference marks shall be regular and not too deep (approx. 0,1 mm max.) and shall not be generated by
a metal deformation process. Stamping shall not be used. Etching or laser engraving are the preferred
marking processes.
5.3.3 Velocity checks
The velocities of longitudinal and transverse waves shall be determined and recorded in accordance
with Annex A (see A.3).
6 Marking
The block shall be permanently marked, in the area shown in Figure 2 c), with the following:
a) a reference to this document (i.e. ISO 19675:2016);
b) the manufacturer’s serial number and trade mark;
c) the steel grade used to make the block.
ISO 19675:2017(E)
a) Front view
b) Bottom view
a
c) Back view
Tolerances:
Reflector tolerance per chart, Overall block size tolerance ±0,1 mm.
Remove all burrs, break all edges, no sharp corners. Mill all surfaces, surface finish, all over R ≤ 0,8 μm.
a
Machining Tolerances for reflectors and marks
a)  hole diameters, ±0,2 mm c)  central position of reference reflectors, ±0,1 mm
b)  all pertinent angles, ±1 ° d)  angle identification and index mark lengths, ±0,4 mm
Figure 2 — Block dimensions with tolerances
4 © ISO 2017 – All rights reserved

ISO 19675:2017(E)
a) Side view
b) Detail A
c) Detail B
ISO 19675:2017(E)
d) Detail C
NOTE See Table 1 for dimensions.
Figure 3 — Reference marks — Dimensions and positions
7 Declaration of conformity
A declaration of con
...