1、 IEC TR 60493-3 Edition 1.0 2017-05 TECHNICA L REPOR T Guidelines for the st atistical analysis of ageing test data Part 3:Minimum specimen numbers at different test conditions with giv en experimental data IEC TR 60493-3:2017-05(en)colourinside THIS PUBLICA TION IS COPYRIGHT PROTECTED Copyright 201
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11、 data Part 3:Minimum specimen numbers at different test conditions with giv en experimental data INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.035.01 ISBN 978-2-8322-4299-5 R egist er ed tr ademar k of t he Int er national Electr ot echnical Commission W arning!Make sure that y ou obtained this p
12、ublication from an authorized distributor.colourinside 2 IEC TR 60493-3:2017 IEC 2017 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references.6 3 Terms,definitions,symbols and conventions.6 3.1 Terms and definitions.6 3.2 Symbols.6 3.3 Conventions.7 4 Assumptions.7 5 General consideratio
13、ns.8 6 Probability calculation based on normal distributions.10 6.1 General.10 6.2 Calculations.10 6.3 Estimated life at 90 C(temperature difference is set to be 40 C).12 6.3.1 Ideal case with =0,05,0,1,0,2,0,3.12 6.3.2 Test sample numbers of 20,10,5,3 with =0,05.13 6.3.3 Test sample numbers of 20,1
14、0,5,3 with =0,3.14 6.4 Estimated life at 50 C(temperature difference is set to be 80 C).15 6.4.1 Ideal case with =0,05,0,1,0,2,0,3.15 6.4.2 Test sample numbers of 20,10,5,3 with =0,05.16 6.4.3 Test sample numbers of 20,10,5,3 with =0,3.17 Figure 1 Ageing time versus survival ratio.9 Figure 2 Arrheni
15、us plot of failure time or scatter.9 Figure 3 Temperature dependence of t.10 Figure 4 Estimated life at 90 C for the ideal case.13 Figure 5 Test sample numbers of 20,10,5,3 with =0,05.14 Figure 6 Test sample numbers of 20,10,5,3 with =0,3.15 Figure 7 Estimated life at 50 C for the ideal case.16 Figu
16、re 8 Test sample numbers of 20,10,5,3 with =0,05.17 Figure 9 Test sample numbers of 20,10,5,3 with =0,3.18 Table 1 Symbols.7 IEC TR 60493-3:2017 IEC 2017 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ GUIDELINES FOR THE STATISTICAL ANALYSIS OF AGEING TEST DATA Part 3:Minimum specimen numbers at different test conditions with given experimental data FOREWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprising all national electrotechnical