BS 5242-1-1987 液压动力流体气缸筒用管材.第1部分:特别精加工表面的钢管规范
作者:标准资料网 时间:2024-05-10 16:00:41 浏览:8836
来源:标准资料网
【英文标准名称】:Tubesforfluidpowercylinderbarrels-Specificationforsteeltubeswithspeciallyfinishedsurfaces
【原文标准名称】:液压动力流体气缸筒用管材.第1部分:特别精加工表面的钢管规范
【标准号】:BS5242-1-1987
【标准状态】:作废
【国别】:英国
【发布日期】:1987-12-31
【实施或试行日期】:1987-12-31
【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】:厚度;抗拉强度;热处理;采掘设备;流体设备元件;表面纹理;套筒缸;流体设备;名称与符号;直径;冲击强度;等级(质量);试验压力;流体动力缸;优先尺寸;表面缺陷;屈服强度;断裂伸长;直线度测量;钢;尺寸公差;管;精整;硬度
【英文主题词】:Designations;Diameter;Dimensionaltolerances;Elongationatfracture;Finishes;Fluidequipment;Fluidequipmentcomponents;Fluidpowercylinders;Grades(quality);Hardness;Heattreatment;Impactstrength;Miningequipment;Pipes;Preferredsizes;Steels;Straightnessmeasurement;Surfacedefects;Surfacetexture;Telescopiccylinders;Tensilestrength;Testpressure;Thickness;Yieldstrength
【摘要】:Includesdetailsofchemicalcomposition,mechanicalproperties,dimensionaltolerancesandsurfacetextureofspeciallyfinishedsurfaces.
【中国标准分类号】:H48
【国际标准分类号】:23_100_40
【页数】:16P;A4
【正文语种】:英语
基本信息
| 标准名称： | 针叶树锯材 树种公差 |
| 中标分类： |
农业、林业 >>
林业 >>
木材加工材 |
| 替代情况： | 被GB/T 153-1995代替 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1985-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 2页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 农业 林业 林业 木材加工材
【英文标准名称】:StandardTestMethodforSmallPunchTestingofUltra-HighMolecularWeightPolyethyleneUsedinSurgicalImplants
【原文标准名称】:外科植入物用超高分子重量聚乙烯的小型打孔器检测的标准试验方法
【标准号】:ASTMF2183-2002(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:F04.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:mechanicalbehavior;miniaturespecimens;smallpunchtest;UHMWPE;ultra-highmolecularweightpolyethylene;Mechanicalanalysis/testing;Miniaturespecimentesting;Small-scaletesting;Surgicalimplants;Ultra-highmolecular-weightpolyethylene(UH
【摘要】:MiniaturespecimentestingtechniquesareusedtocharacterizethemechanicalbehaviorofUHMWPEstockmaterialsandsurgicalimplantsaftermanufacture,sterilization,shelfaging,radiationcrosslinking,thermaltreatment,andimplantation(1).Furthermore,experimentalUHMWPEmaterialscanbeevaluatedafteracceleratedagingandhiporkneewearsimulation.Consequently,thesmallpunchtestmakesitpossibletoexaminerelationshipsbetweenwearperformanceandmechanicalbehaviorofUHMWPE.ThistestmethodcanalsobeusedtorankthemechanicalbehaviorofUHMWPErelativetoareferencecontrolmaterial(suchastheNISTUltra-HighMolecularWeightPolyethyleneReferenceMaterial8456).Smallpunchtestingresultsmayvarywithspecimenpreparationandwiththespeedandenvironmentoftesting.Consequently,whereprecisecomparativeresultsaredesired,thesefactorsmustbecarefullycontrolled.1.1Thistestmethodcoversthedeterminationofmechanicalbehaviorofultra-highmolecularweightpolyethylene(UHMWPE)bysmallpunchtestingofminiaturediskspecimens(0.5mminthicknessand6.4mmindiameter).ThetestmethodhasbeenestablishedforcharacterizingUHMWPEsurgicalmaterialsafterramextrusionorcompressionmolding(1,2);forevaluatingas-manufacturedimplantsafterradiationcrosslinkingandsterilization(3,4);aswellasfortestingofimplantsthathavebeenretrieved(explanted)fromthehumanbody(5,6).1.2Theparametersofthesmallpunchtest,namelythepeakload,ultimatedisplacement,ultimateload,andworktofailure,providemetricsoftheyielding,ultimatestrength,ductility,andtoughnessofUHMWPEundermultiaxialloadingconditions.BecausethemechanicalbehaviorofUHMWPEisdifferentwhenloadedunderuniaxialandmultiaxialloadingconditions(3),thesmallpunchtestprovidesacomplementarymechanicaltestingtechniquetotheuniaxialtensiletestingspecifiedformedicalgradeUHMWPEbySpecificationF648.1.3Inadditiontoitsuseasaresearchtoolinimplantretrievalanalysis,thesmallpunchtestcanbeusedasalaboratoryscreeningtesttoevaluatenewUHMWPEmaterials,suchasthosecreatedbygammaorelectronbeamirradiation(1).ThetestmethodisalsowellsuitedforcharacterizationofUHMWPEbeforeandafteracceleratedaging(forexample,GuideF2003),andinthatregarditcanproviderankingofthemechanicaldegradationofdifferentUHMWPEsamplesafteroxidativedegradation(4,7).1.4Thesmallpunchtesthasbeenappliedtootherpolymers,includingpolymethylmethacrylate(PMMA)bonecement,polyacetal,andhighdensitypolyethylene(HDPE)(8,9).However,thesmallpunchtestingofpolymersotherthanUHMWPEisbeyondthescopeofthisstandard.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Theunitsinparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C45
【国际标准分类号】:11_040_40
【页数】:5P.;A4
【正文语种】:英语
