EN ISO 16827:2014

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Zerstörungsfreie Prüfung - Ultraschallprüfung - Beschreibung und Größenbestimmung von Inhomogenitäten (ISO 16827:2012)Essais non destructifs - Contrôle par ultrasons - Caractérisation et dimensionnement des discontinuités (ISO 16827:2012)Non-destructive testing - Ultrasonic testing - Characterization and sizing of discontinuities (ISO 16827:2012)19.100Neporušitveno preskušanjeNon-destructive testingICS:Ta slovenski standard je istoveten z:EN ISO 16827:2014SIST EN ISO 16827:2014en01-julij-2014SIST EN ISO 16827:2014SLOVENSKI
STANDARDSIST EN 583-5:2001/A1:2004SIST EN 583-5:20011DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN ISO 16827
March 2014 ICS 19.100 Supersedes EN 583-5:2000English Version
Non-destructive testing - Ultrasonic testing - Characterization and sizing of discontinuities (ISO 16827:2012)
Essais non destructifs - Contrôle par ultrasons - Caractérisation et dimensionnement des discontinuités (ISO16827:2012)
Zerstörungsfreie Prüfung - Ultraschallprüfung - Beschreibung und Größenbestimmung von Inhomogenitäten (ISO 16827:2012) This European Standard was approved by CEN on 9 February 2014.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
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Foreword .3 SIST EN ISO 16827:2014

Reference numberISO 16827:2012(E)© ISO 2012
INTERNATIONAL STANDARD ISO16827First edition2012-04-01Non-destructive testing — Ultrasonic testing — Characterization and sizing of discontinuities Essais non destructifs — Contrôle par ultrasons — Caractérisation et dimensionnement des discontinuités
ISO 16827:2012(E)
©
ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56  CH-1211 Geneva 20 Tel.
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ii
ISO 16827:2012(E) © ISO 2012 – All rights reserved iii Contents Page Foreword.v 1 Scope.1 2 Normative references.1 3 Principles of characterization of discontinuities.1 3.1 General.1 3.2 Requirements for surface condition.2 4 Pulse echo techniques.2 4.1 General.2 4.2 Location of discontinuity.2 4.3 Orientation of discontinuity.2 4.4 Assessment of multiple indications.3 4.5 Shape of discontinuity.3 4.5.1 Simple classification.3 4.5.2 Detailed classification of shape.4 4.6 Maximum echo height of indication.4 4.7 Size of discontinuity.4 4.7.1 General.4 4.7.2 Maximum echo height techniques.4 4.7.3 Probe movement sizing techniques.5 4.7.4 Selection of sizing techniques.5 4.7.5 Sizing techniques with focussing ultrasonic probes.6 4.7.6 Use of mathematical algorithms for sizing.6 4.7.7 Special sizing techniques.6 5 Transmission technique.7 5.1 General.7 5.2 Location of discontinuity.7 5.3 Evaluation of multiple discontinuities.7 5.4 Reduction of
signal amplitude.8 5.5 Sizing of discontinuity.8 Annex A (normative)
Analysis of multiple indications.12 A.1 Lateral characterisation.12 A.2 Transverse (Through-thickness) characterisation.12 A.3 Shadow technique.12 Annex B (normative)
Techniques for the classification of discontinuity shape.14 B.1 Simple classification.14 B.1.1 General.14 B.1.2 Reconstruction technique.14 B.1.3 Echo envelope technique.14 B.2 Detailed classification.14 B.2.1 General.14 B.2.2 Echodynamic pattern technique.15 B.2.3 Directional reflectivity.17 B.3 Combination of data.17 Annex C (informative)
Maximum echo height sizing technique.25 C.1 Distance-gain-size (DGS) technique.25 C.1.1 Principle.25 C.1.2 Applications and limitations.25 C.2 Distance-amplitude-correction (DAC) curve technique.25 C.2.1 Principle.25 Introduction.vi SIST EN ISO 16827:2014

ISO 16827:2012(E) iv © ISO 2012 – All rights reserved
C.2.2 Applications and limitations.26 Annex D (normative)
Probe movement sizing techniques.27 D.1 Fixed amplitude level techniques.27 D.1.1 Principle.27 D.1.2 Application and limitations.27 D.2 6 dB drop from maximum technique.27 D.2.1 Principle.27 D.2.2 Application and limitations.27 D.3 12 dB or 20 dB drop from maximum technique.28 D.3.1 Principle.28 D.3.2 Application and limitations.28 D.4 Drop to noise level technique.28 D.4.1 Principle.28 D.4.2 Application and limitations.28 D.5 6 dB drop tip location technique.
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