ISO INTERNATIONAL STANDARD 22007-3 First edition 2008-12-15 Plastics Determination of thermal conductivity and thermal diffusivity Part 3: Temperature wave analysis method Plastiques-Détermination de la conductivite thermique et de la diffusivite thermique- Partie 3: Methode par analyse de I'oscillation de la temperature Reference number ISO 22007-3:2008(E) @ ISO 2008 IHS unde Not for Resale ISO 22007-3:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTEDDOCUMENT @ ISO2008 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 memberbody in the country of the requester. ISO copyright office Case postale 56. CH-1211Geneva 20 Tel. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISo 2008 - All rights reserved I without license from IHS Not for Resale ISO 22007-3:2008(E) Contents Page Foreword. Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols and units 2 5 Principle 6 Apparatus. 6.1 General.. 6.2 Constant-temperature enclosure 6.3 Heaterandsensorelements. 6.4 Heating circuit... 6.5 Measurement circuit... 6.6 Phase-shift measurement device... 6.7 Devices for measuring the specimen temperature. 7 Test specimen.. 7.1 Dimensions... 7.2 Thickness 7.3 Specimen-backing plates.... 8 Procedure 9 Analysis of results 10 Calibration and verification of apparatus and method. .8 10.1 Calibration .... 10.2 Verification .. 11 Precision and bias 11.1 Uncertainty 11.2 Repeatability.. 9 12 Test report Annex A (informative) Mathematical background to temperature wave analysis.... 10 Annex B (informative) Typical thermal-diffusivity data for a typical polyimide.. Annex C (informative) Example of frequency-thickness relationships required for acceptable measurements.... ..12 Annex D (informative) Numerical simulations of the phase shift, A, as a function of kd and .. Annex E (informative) Examples of uncertainties in thermal-diffusivity measurements .. Bibliography 16 ili from IHS Not for Resa