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reliab lv4lv4 09年7月20日 StandardTestMethodsfor Vibration(VerticalLinearMotion)TestofProducts1 1.Scope 1.1Thesetestmethodscoverthedeterminationofresonances ofunpackagedproductsandcomponentsofunpackaged productsbymeansofverticallinearmotionatthesurfaceon whichtheproductismountedfortest.Twoalternatetest methodsarepresented: TestMethodA—ResonanceSearchUsingSinusoidalVibration,and TestMethodB—ResonanceSearchUsingRandomVibration. NOTE1—Thetwotestmethodsarenotnecessarilyequivalentandmay notproducethesameresults.Itispossiblethattestsusingrandom vibrationmaybemorerepresentativeofthetransportenvironmentand maybeconductedmorequicklythansinetests. 1.2Thisinformationmaybeusedtoexaminetheresponse ofproductstovibrationforproductdesignpurposes,orforthe designofacontainerorinteriorpackagethatwillminimize transportationvibrationinputsatthesecriticalfrequencies, whentheseproductsresonancesarewithintheexpected transportationenvironmentfrequencyrange.Sincevibration damageismostlikelytooccuratproductresonantfrequencies, theseresonancesmaybethoughtofaspotentialproduct fragilitypoints. 1.3Informationobtainedfromtheoptionaldwelltestmethods maybeusedtoassessthefatiguecharacteristicsofthe resonatingcomponentsandforproductmodification.Thismay becomenecessaryiftheresponseofaproductwouldrequire designofanimpracticalorexcessivelycostlyshippingcontainer. 1.4Thesetestmethodsdonotnecessarilysimulatethe vibrationeffectsthattheproductwillencounterinitsoperational orin-useenvironment.Other,moresuitabletestprocedures shouldbeusedforthispurpose. 1.5Testlevelsgiveninthesetestmethodsrepresentthe correlationofthebestinformationcurrentlyavailablefrom researchinvestigationandfromexperienceintheuseofthese testmethods.Ifmoreapplicableoraccuratedataareavailable, theyshouldbesubstituted. 1.6Thisstandarddoesnotpurporttoaddressallofthe safetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriate safetyandhealthpracticesanddeterminetheapplicability ofregulatorylimitationspriortouse.SeeSection6for specificprecautionarystatements.
StandardTestMethodsfor
Vibration(VerticalLinearMotion)TestofProducts1
1.Scope
1.1Thesetestmethodscoverthedeterminationofresonances
ofunpackagedproductsandcomponentsofunpackaged
productsbymeansofverticallinearmotionatthesurfaceon
whichtheproductismountedfortest.Twoalternatetest
methodsarepresented:
TestMethodA—ResonanceSearchUsingSinusoidalVibration,and
TestMethodB—ResonanceSearchUsingRandomVibration.
NOTE1—Thetwotestmethodsarenotnecessarilyequivalentandmay
notproducethesameresults.Itispossiblethattestsusingrandom
vibrationmaybemorerepresentativeofthetransportenvironmentand
maybeconductedmorequicklythansinetests.
1.2Thisinformationmaybeusedtoexaminetheresponse
ofproductstovibrationforproductdesignpurposes,orforthe
designofacontainerorinteriorpackagethatwillminimize
transportationvibrationinputsatthesecriticalfrequencies,
whentheseproductsresonancesarewithintheexpected
transportationenvironmentfrequencyrange.Sincevibration
damageismostlikelytooccuratproductresonantfrequencies,
theseresonancesmaybethoughtofaspotentialproduct
fragilitypoints.
1.3Informationobtainedfromtheoptionaldwelltestmethods
maybeusedtoassessthefatiguecharacteristicsofthe
resonatingcomponentsandforproductmodification.Thismay
becomenecessaryiftheresponseofaproductwouldrequire
designofanimpracticalorexcessivelycostlyshippingcontainer.
1.4Thesetestmethodsdonotnecessarilysimulatethe
vibrationeffectsthattheproductwillencounterinitsoperational
orin-useenvironment.Other,moresuitabletestprocedures
shouldbeusedforthispurpose.
1.5Testlevelsgiveninthesetestmethodsrepresentthe
correlationofthebestinformationcurrentlyavailablefrom
researchinvestigationandfromexperienceintheuseofthese
testmethods.Ifmoreapplicableoraccuratedataareavailable,
theyshouldbesubstituted.
1.6Thisstandarddoesnotpurporttoaddressallofthe
safetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriate
safetyandhealthpracticesanddeterminetheapplicability
ofregulatorylimitationspriortouse.SeeSection6for
specificprecautionarystatements.
ASTMD3580-95(R2004)