BS 373-1957 无节疤小木材样品的试验方法
时间:2024-05-22 19:34:30 来源: 标准资料网 作者：标准资料网 阅读：9474
【英文标准名称】:Methodsoftestingsmallclearspecimensoftimber
【原文标准名称】:无节疤小木材样品的试验方法
【标准号】:BS373-1957
【标准状态】:现行
【国别】:英国
【发布日期】:1957-02-21
【实施或试行日期】:1957-02-21
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:剪切试验;试样制备;物理性能测量;形状;劈裂;密度测量;冲击试验;弯曲试验;收缩性试验;机械试验;公式;压缩试验;渗透性试验;潮气测量;木材;抗拉试验;静荷载;试样;材料强度
【英文主题词】:Bendtesting;Cleavage;Compressiontesting;Densitymeasurement;Formulae(mathematics);Impacttesting;Mechanicaltesting;Moisturemeasurement;Penetrationtests;Physicalpropertymeasurement;Shape;Sheartesting;Shrinkagetests;Specimenpreparation;Staticloading;Strengthofmaterials;Tensiletesting;Testspecimens;Wood
【摘要】:Measurementofstrengthpropertiesforwoodenstructures.Both2inand2cmstandardtests.Tableoftestsforsuitabilityoftimberforspecificuses.
【中国标准分类号】:P23
【国际标准分类号】:79_040
【页数】:32P.;A4
【正文语种】:英语
【英文标准名称】:Determinationoftheultimateaerobicbiodegradabilityofplasticmaterialsinanaqueousmedium-Methodbyanalysisofevolvedcarbondioxide
【原文标准名称】:水介质中塑料材料富氧菌生物降解性的测定二氧化碳增量分析法
【标准号】:ISO14852-1999
【标准状态】:现行
【国别】:国际
【发布日期】:1999-05
【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】:好气菌;有机化合物;生物降解能力;试验;塑料;塑料制品
【英文主题词】:Aerobicbacteria;Biodegradability;Carbondioxide;Definitions;Measurement;Methods;Organiccompounds;Plastics;Plasticsproducts;Pollutioncontrol;Testing
【摘要】:ThisInternationalStandardspecifiesamethod,bymeasuringtheamountofcarbondioxideevolved,forthedeterminationofthedegreeofaerobicbiodegradabilityofplasticmaterials,includingthosecontainingformulationadditives.Thetestmaterialisexposedinasyntheticmediumunderlaboratoryconditionstoaninoculumfromactivatedsludge,compostorsoil.Ifanunadaptedactivatedsludgeisusedastheinoculum,thetestsimulatesthebiodegradationprocesseswhichoccurinanaturalaqueousenvironment;ifamixedorpre-exposedinoculumisused,themethodcanbeusedtoinvestigatethepotentialbiodegradabilityofatestmaterial.TheconditionsusedinthisInternationalStandarddonotnecessarilycorrespondtotheoptimumconditionsallowingmaximumbiodegradationtooccur,butthestandardisdesignedtodeterminethepotentialbiodegradabilityofplasticmaterialsorgiveanindicationoftheirbiodegradabilityinnaturalenvironments.Themethodenablestheassessmentofthebiodegradabilitytobeimprovedbycalculatingacarbonbalance(optional,seeannexC).Themethodappliestothefollowingmaterials:—Naturaland/orsyntheticpolymers,copolymersormixturesthereof.—Plasticmaterialswhichcontainadditivessuchasplasticizers,colorantsorothercompounds.—Water-solublepolymers.—Materialswhich,underthetestconditions,donotinhibitthemicroorganismspresentintheinoculum.Inhibitoryeffectscanbedeterminedusinganinhibitioncontrolorbyanotherappropriatemethod(seee.g.ISO8192).Ifthetestmaterialisinhibitorytotheinoculum,alowertestconcentration,anotherinoculumorapre-exposedinoculumcanbeused.
【中国标准分类号】:Z04
【国际标准分类号】:83_080_01
【页数】:18P;A4
【正文语种】:英语
Product Code:SAE AMS5042
Title:Steel, Sheet and Strip, 0.15 Carbon, Maximum Forming Grade (NONCURRENT Aug 2009)
Issuing Committee:Ams E Carbon And Low Alloy Steels Committee
Scope:This specification has been declared “NONCURRENT” by the Aerospace Materials Division, SAE, as of August 2009. It is recommended, therefore, that this specification not be specified for new designs.“NONCURRENT” refers to those specifications which have previously been widely used and which may be required for production or processing of existing designs in the future. The Aerospace Materials Division, however, does not recommend these specifications for future use in new designs. “NONCURRENT” specifications are available from SAE upon request.