IEC 60068-2-81

給各位參考

Environmentaltesting–Part2-81:
Tests–TestEi:Shock–Shockresponsespectrumsynthesis

FOREWORD.7
INTRODUCTION11
1Scope13
2Normativereferences..13
3Termsanddefinitions..13
4Requirementsfortestapparatus23
4.1Basicmotion.23
4.2Cross-motion23
4.3Signaltolerance.23
4.4Measuringsystem…23
5Requirementsfortesting..25
5.1Testcontrol…25
5.2TolerancesonSRS.25
5.3CalculationoftestSRS25
5.4AlgorithmsforcalculationofSRS27
5.5Testfrequencyrange…27
5.6Mounting..27
6Severities….29
6.1RequiredSRS….29
6.2Durationofthesynthesizedtime-history29
6.3Numberofrepetitions…31
6.4Testfrequencyrange…31
6.5Numberofhighpeaksinacalculatedresponsetime-historyofasingledegree-
of-freedomsystem31
7Preconditioning.31
8Initialmeasurements…33
9Testing…33
9.1General…33
9.2Vibrationresponseinvestigation..33
9.3Synthesisofthetesttime-history.35
9.4Testingwithsynthesizedtesttime-histories37
10Intermediatemeasurements..39
11Recovery39
12Finalmeasurements….39
13Informationtobegivenintherelevantspecification..39
14Informationtobegiveninthetestreport….41