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BS EN 1007-4-2005 高级工业陶瓷.陶瓷复合材料.纤维增强的试验方法.环境温度下长纤维的抗拉性能测定

作者:标准资料网 时间:2024-05-19 11:13:19  浏览:8662   来源:标准资料网
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【英文标准名称】:Advancedtechnicalceramics-Ceramiccomposites-Methodsoftestforreinforcements-Determinationoftensilepropertiesoffilamentsatambienttemperature
【原文标准名称】:高级工业陶瓷.陶瓷复合材料.纤维增强的试验方法.环境温度下长纤维的抗拉性能测定
【标准号】:BSEN1007-4-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2005-09-06
【实施或试行日期】:2005-09-06
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:数学计算;特性;试验;纤维增强的;定义;环境温度;机械性能;陶瓷纤维;抗拉强度;纤维;陶瓷;断裂伸长;复合材料;高级工业陶瓷
【英文主题词】:Advancedtechnicalceramics;Ambienttemperatures;Ceramicfibres;Ceramics;Compositematerials;Definition;Definitions;Elongationatfracture;Fibrereinforced;Fibres;Mathematicalcalculations;Mechanicalproperties;Properties;Tensilestrength;Testing
【摘要】:
【中国标准分类号】:Q32
【国际标准分类号】:81_060_30
【页数】:16P;A4
【正文语种】:英语


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【英文标准名称】:StandardTestMethodforDynamicYoung'sModulus,ShearModulus,andPoisson'sRatioforAdvancedCeramicsbySonicResonance
【原文标准名称】:用声谐振测定高级陶瓷的动态扬氏模量、剪切模量和泊松比的标准试验方法
【标准号】:ASTMC1198-2008
【标准状态】:现行
【国别】:
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C28.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:声学测量;陶瓷;测试
【英文主题词】:advancedceramics;bar;beam;cylindricalrod;dynamic;elasticmodulus;flexure;elasticproperties;Poisson'sratio;resonance;resonantbeam;shearmodulus;torsion;Young'smodulus;Advancedceramics;Audiooscillator;Dynamicelasticproperties;Elasticproperties;Modulusofelasticity;Nondestructiveevaluation(NDE)--nonmetallicmaterials;Poisson'sratio;Resonances;Resonantbeam;Shearmodulus;Sheartesting--ceramics;Sinusoidalvoltage;Sonicresonance;Stress--ceramics;Variable-frequencyaudiooscillator;Young'smodulus
【摘要】:p>Thistestmethodmaybeusedformaterialdevelopment,characterization,designdatageneration,andqualitycontrolpurposes.Itisspecificallyappropriatefordeterminingthemodulusofadvancedceramicsthatareelastic,homogeneous,andisotropic.Thistestmethodisnondestructiveinnature.Onlyminutestressesareappliedtothespecimen,thusminimizingthepossibilityoffracture.Theperiodoftimeduringwhichmeasurementstressisappliedandremovedisoftheorderofhundredsofmicroseconds.Withthistestmethoditisfeasibletoperformmeasurementsathightemperatures,wheredelayedelasticandcreepeffectswouldinvalidatemodulusmeasurementscalculatedfromstaticloading.Thistestmethodhasadvantagesincertainrespectsovertheuseofstaticloadingsystemsformeasuringmoduliinadvancedceramics.Itisnondestructiveinnatureandcanbeusedforspecimenspreparedforothertests.Specimensaresubjectedtominutestrains;hence,themoduliaremeasuredatorneartheoriginofthestress-straincurvewiththeminimumpossibilityoffracture.Theperiodoftimeduringwhichmeasurementstressisappliedandremovedisoftheorderofhundredsofmicroseconds.Withthistestmethoditisfeasibletoperformmeasurementsathightemperatures,1.1Thistestmethodcoversthedeterminationofthedynamicelasticpropertiesofadvancedceramics.Specimensofthesematerialspossessspecificmechanicalresonantfrequenciesthataredeterminedbytheelasticmodulus,mass,andgeometryofthetestspecimen.Therefore,thedynamicelasticpropertiesofamaterialcanbecomputedifthegeometry,mass,andmechanicalresonantfrequenciesofasuitabletestspecimenofthatmaterialcanbemeasured.DynamicYoung'smodulusisdeterminedusingtheresonantfrequencyintheflexuralmodeofvibration.Thedynamicshearmodulus,ormodulusofrigidity,isfoundusingtorsionalresonantvibrations.DynamicYoung'smodulusanddynamicshearmodulusareusedtocomputePoisson'sratio.1.2Thistestmethodmeasurestheresonantfrequenciesoftestspecimensofsuitablegeometrybymechanicallyexcitingthematcontinuouslyvariablefrequencies.Mechanicalexcitationofthebarsisprovidedthroughtheuseofatransducerthattransformsacyclicelectricalsignalintoacyclicmechanicalforceonthespecimen.Asecondtransducersensestheresultingmechanicalvibrationsofthespecimenandtransformsthemintoanelectricalsignal.Theamplitudeandfrequencyofthesignalaremeasuredbyanoscilloscopeorother
【中国标准分类号】:
【国际标准分类号】:
【页数】:11P.;A4
【正文语种】:


MIL-C-13777-6B, MILITARY SPECIFICATION SHEET CABLE, SPECIAL PURPOSE,ELECTRICAL 60, 65 AND 78 CONDUCTORS (1 SEPT 1966)., The complete requirements for procuring the cable described herein shall consist of this document and the latest issue of Specification MIL-C-13777.

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