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请各位大哥帮我理解一下,以下是BellcoreGR-1221_CORE中的第6.2.1冲击实验部分
Themechanicalshock(orimpact)testisbasedonMIL-STD-883,Method2002,withthefollowingconditions:
NumberofShocks:5timesperdirectionfor6directions(on3axes)
ShockLevel:500G
Duration:1ms
OR
theproceduresstatedinEIA/TIA-455-2Aforlightserviceapplications,withthe
followingconditions:
DropHeight:1.8meters(6feet)
Numberofdropsperthreemutuallyperpendicularaxes:8
Numberofrepetitionsofimpacttestcycle:5
R6-8[138]Thecomponentshallbemountedrigidlysothattheshockistransmittedtotheinternalcomponentsandnotabsorbedorcushionedbythefiberpigtailsorleads.
AsuggestedmethodofperformingthistesttoEIA/TIA-455-2Aproceduresistomountthefiberopticcomponentinsideacontainerfilledwitharigidpackingmedium(suchassandorsmallglassbeads)sothatthepackagedoesnotshiftorbouncearoundwhenthecontainerisdropped.Inthisway,theimpactshockisnotabsorbedbyanelasticpackingmaterialorbythecomponentfiberpigtailsorleads,butisfullytransmittedtotheinternalcomponents.
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我的理解是这么做的,不知道有没有错误:
1)先设计包装,使包装内的产品的脆值(G)至少满足500G的要求.
2)然后通过跌落实验,就象要求中所要求的从1.8m的地方自由落下等等.
3)实验结素观察包装内结果是不是出现损坏的迹象? |
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