Non-magnetic Coatings On Magnetic Substrates — Measurement .

Transcription

ISOINTERNATIONALThis is a preview of "ISO 2178:2016". Click here to purchase the full version from the ANSI store.STANDARD2178Third edition2016-03-15Non-magnetic coatings on magneticsubstrates — Measurement of coatingthickness — Magnetic methodRevêtement métalliques non magnétiques sur métal de basemagnétique — Mesurage de l’epaisseur du revêtement — MéthodemaguétiqueReference numberISO 2178:2016(E) ISO 2016

ISO 2178:2016(E) This is a preview of "ISO 2178:2016". Click here to purchase the full version from the ANSI store.COPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any formor by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without priorwritten permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country ofthe requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. 41 22 749 01 11Fax 41 22 749 09 47copyright@iso.orgwww.iso.orgii ISO 2016 – All rights reserved

ISO 2178:2016(E) This is a preview of "ISO 2178:2016". Click here to purchase the full version from the ANSI store.Contents PageForeword.v12345678910Scope. 1Normative references. 1Terms and definitions. 1Principle of measurement. 24.1Basic principle of all magnetic measurement methods. 24.2Magnetic pull-off method. 24.3Magnetic inductive principle. 3Magnetic flux gauge. 54.4Factors affecting measurement accuracy. 65.1Basic influence of the coating thickness. 65.2Magnetic properties of the base metal. 6Electrical properties of the coating materials. 75.35.4Geometry: base metal thickness. 75.5Edge effect. 7Geometry: surface curvature. 75.6Surface roughness. 85.75.8Cleanliness: lift-off effect. 8Probe pressure. 85.95.10 Probe tilt. 85.11 Temperature effects. 95.12 External electromagnetic fields. 9Calibration and adjustment of the instrument. 96.1General. 9Thickness reference standards. 96.26.3Methods of adjustment. 10Measurement procedure and evaluation.10General. 107.17.2Number of measurements and evaluation. 11Uncertainty of the results.118.1General remarks. 11Uncertainty of the calibration of the instrument. 128.28.3Stochastic errors. 138.4Uncertainties caused by factors summarized in Clause 5 . 138.5Combined uncertainty, expanded uncertainty and final result. 14Precision. 149.1General. 149.2Repeatability (r). 149.3Reproducibility limit (R). 15Test report. 15Annex A (informative) Basic principle of all measurement methods.17Annex B (informative) Basic performance requirements for coating thickness gauges whichare based on the magnetic method described in this International Standard.19Annex C (informative) Examples of experimental estimation of factors affecting themeasurement .21Annex D (informative) Example of uncertainty estimation (see Clause 8).26Annex E (informative) Basics of the determination of the uncertainty of a measurement ofthe used measurement method corresponding to ISO/IEC Guide 98-3.29 ISO 2016 – All rights reserved iii

ISO 2178:2016(E) This is a preview of "ISO 2178:2016". Click here to purchase the full version from the ANSI store.Annex F (informative) Table of the student factor.31Annex G (informative) Details on precision.32Bibliography. 37iv ISO 2016 – All rights reserved

ISO 2178:2016(E) This is a preview of "ISO 2178:2016". Click here to purchase the full version from the ANSI store.ForewordISO (the International Organization for Standardization) is a worldwide federation of national standardsbodies (ISO member bodies). The work of preparing International Standards is normally carried outthrough ISO technical committees. Each member body interested in a subject for which a technicalcommittee has been established has the right to be represented on that committee. Internationalorganizations, 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 ofelectrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance aredescribed in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for thedifferent types of ISO documents should be noted. This document was drafted in accordance with theeditorial 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 ofpatent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details ofany patent rights identified during the development of the document will be in the Introduction and/oron 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 notconstitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformityassessment, as well as information about ISO’s adherence to the WTO principles in the TechnicalBarriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 107, Metallic and other inorganic coatings.This third edition cancels and replaces the second edition (ISO 2178:1982), which has been technicallyrevised. ISO 2016 – All rights reserved v

Non-magnetic coatings on magnetic substrates — Measurement of coating thickness — Magnetic method Revêtement métalliques non magnétiques sur métal de base magnétique — Mesurage de l’epaisseur du revêtement — Méthode maguétique INTERNATIONAL STANDARD ISO 2178 Third edition 2016-03-15 Reference number ISO 2178:2016(E) This is a preview of "ISO 2178:2016". Click here to