MIL-DTL-85633C, DETAIL SPECIFICATION: COVERALLS, FLYERS', ANTI-EXPOSURE, CWU-62B/P, CWU-74/P, CWU-62C/P, CWU-86/P, and CWU-87/P (15 JAN 2005)., This specification covers five types of continuous wear anti-exposure flyers' coveralls designated as CWU-62B/P, CWU-74/P, CWU-62C/P, CWU-86/P and CWU-87/P.【英文标准名称】:Fibre-reinforcedplasticcomposites-Determinationofthein-planeshearmodulusbytheplatetwistmethod
【原文标准名称】:纤维增强塑料复合材料用板捻法测定内剪模量
【标准号】:ISO15310-1999
【标准状态】:现行
【国别】:国际
【发布日期】:1999-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:剪切强度;可旋转的;增强塑料;放大;剪切模量;剪切试验;剪切试验;板;测定;试验;定义;定义;纤维增强的;塑料
【英文主题词】:Amplification;Definitions;Determination;Fibrereinforced;Flexibility;Plastics;Plates;Reinforcedplastics;Reinforcement;Rotatable;Shearmodulus;Shearstrength;Sheartesting;Sheartests;Speedoftesting;Testequipment;Testspecimens;Testing
【摘要】:1ThisInternationalStandardspecifiesamethodfordeterminingthein-planeshearmodulus(G12)offibre-reinforcedplasticcompositesusingastandardplatespecimen.Whenappliedtoisotropicmaterials,theshearmodulusmeasuredisindependentofdirection.2Themethodisusedtodeterminetheshearmodulusofthetestspecimensbutnottodeterminetheshearstrength.Itappliestoaplatesupportedontwopointsononediagonalandloadedontheotherdiagonalbythesimultaneousmovementoftwoloadingpointsattachedtoacross-beam.3Themethodissuitableforusewithfibre-reinforcedplasticcompositeswithboththermosetandthermoplasticmatrices.Duetothesheardeformationbeingappliedunderflexuralconditions,forlaminatedmaterialswithdifferentfibreformatsand/ordifferentorientations,thelayersofmaterialmustbewelldistributedacrossthesectionsothatitisapproximately"homogeneous"inthethrough-thicknessdirection.Theprincipalmaterialaxes,ifpresent,mustbeorientatednormaltotheplateedges(see3.8).NOTEThismethodcanbeappliedtounreinforcedpolymersandothermaterials(e.g.metals,ceramicsandmetal-orceramic-matrixcomposites).Formaterialfabricatedusingunidirectionalplies,theshearmodulusobtainedusingamultidirectionalspecimen(i.e.0°/90°/±45°)isnotthesameasthatobtainedforunidirectionalorcross-ply(0°/90°)material.4Themethodisperformedusingspecimenswhichmaybemouldedtothechosendimensions,machinedfromtestplatesormachinedfromflatareasofproducts.5Themethodspecifiespreferreddimensionsforthespecimen.Testswhicharecarriedoutonspecimensofotherdimensions,oronspecimenswhicharepreparedunderdifferentconditions,mayproduceresultswhicharenotcomparable.Otherfactors,suchasthespeedoftestingandtheconditioningofthespecimens,caninfluencetheresults.Consequently,whencomparativedataarerequired,thesefactorsmustbecarefullycontrolledandrecorded.NOTEThestress-strainresponseinshearisverynon-linearathigherstrainlevels.Thistestmethoddeterminesthemoduluswithinalowstrainregionandisnotapplicabletohigherstrains.
【中国标准分类号】:G31
【国际标准分类号】:83_120
【页数】:11P;A4
【正文语种】:英语