CB 896-79 浮标索卷车
作者:标准资料网 时间:2024-05-07 11:56:35 浏览:9850
来源:标准资料网
基本信息
| 标准名称： | 浮标索卷车 |
| 中标分类： |
船舶 >>
舾装设备 >>
救生设备 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1900-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
适用范围
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前言
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目录
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引用标准
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所属分类： 船舶 舾装设备 救生设备
【英文标准名称】:StandardSpecificationforDeformedandPlain,Low-carbon,Chromium,SteelBarsforConcreteReinforcement
【原文标准名称】:混凝土加筋用异型和光面低碳铬钢筋的标准规范
【标准号】:ASTMA1035/A1035M-2006
【标准状态】:作废
【国别】:美国
【发布日期】:2006
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:棒材;碳素钢;铬钢;低碳;加筋混凝土;增强的材料;棒钢
【英文主题词】:Bars(materials);Carbonsteels;Chromiumsteels;Lowcarbon;Reinforcedconcrete;Reinforcedmaterials;Steelbars
【摘要】:
【中国标准分类号】:Q13
【国际标准分类号】:77_140_15
【页数】:5P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforComputedTomographic(CT)ExaminationofCastings
【原文标准名称】:涂层的计算机层析摄影(CT)检查的标准实施规范
【标准号】:ASTME1814-1996(2007)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:E07.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:castings;computedtomography;CT;examination;NDE;nondestructiveevaluation;nondestructiveexamination
【摘要】:CTmaybeperformedonanobjectwhenitisintheas-cast,intermediate,orfinalmachinedcondition.ACTexaminationcanbeusedasadesigntooltoimprovewaxformsandmoldings,establishprocessparameters,randomlycheckprocesscontrol,performfinalqualitycontrol(QC)examinationfortheacceptanceorrejectionofparts,andanalyzefailuresandextendcomponentlifetimes.ThemostcommonapplicationsofCTforcastingsareforthefollowing:locatingandcharacterizingdiscontinuities,suchasporosity,inclusions,cracks,andshrink;measuringas-castpartdimensionsforcomparisonwithdesigndimensions;andextractingdimensionalmeasurementsforreverseengineering.TheextenttowhichaCTimagereproducesanobjectorafeaturewithinanobjectisdictatedlargelybythecompetinginfluencesofspatialresolution,contrastdiscrimination,andartifactsoftheimagingsystem.Operatingparametersstrikeanoverallbalancebetweenimagequality,examinationtime,andcost.ArtifactsareoftenthelimitingfactorinCTimagequality.(SeePracticeE1570foranin-depthdiscussionofartifacts.)Artifactsarereproduciblefeaturesinanimagethatarenotrelatedtoactualfeaturesintheobject.Artifactscanbeconsideredcorrelatednoisebecausetheyformrepeatablefixedpatternsundergivenconditionsyetcarrynoobjectinformation.Forcastings,itisimperativetorecognizewhatisandisnotanartifactsinceanartifactcanobscureormasqueradeasadiscontinuity.Artifactsaremostprevalentincastingswithlongstraightedgesorcomplexgeometries,orboth.1.1Thispracticecoversauniformprocedurefortheexaminationofcastingsbythecomputedtomography(CT)technique.TherequirementsexpressedinthispracticeareintendedtocontrolthequalityofthenondestructiveexaminationbyCTandarenotintendedforcontrollingtheacceptabilityorqualityofthecastings.Thispracticeimplicitlysuggeststheuseofpenetratingradiation,specificallyXraysandgammarays.1.2ThispracticeprovidesauniformprocedureforaCTexaminationofcastingsforoneormoreofthefollowingpurposes:1.2.1Examiningfordiscontinuities,suchasporosity,inclusions,cracks,andshrink;1.2.2Performingmetrologicalmeasurementsanddeterminingdimensionalconformance;and1.2.3Determiningreverseengineeringdata,thatis,creatingcomputer-aideddesign(CAD)datafiles.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificsafetystatements,seeSection7,NBSHandbook114,and21CFR1020.40and29CFR1910.96.
【中国标准分类号】:G50
【国际标准分类号】:77_040_20
【页数】:4P.;A4
【正文语种】:
