SAE ARP2654 Ultrasonic Thickness Testing

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Product Code:SAE ARP2654
Title:Ultrasonic Thickness Testing
Issuing Committee:Ams K Non Destructive Methods And Processes Committee
Scope: To provide general instructions for accomplishing ultrasonic thickness measurements. Measurements can be made from one side of a material when access to the opposite side is restricted.This Recommended Practice is intended for, but not limited to use at maintenance and overhaul facilities to inspect aerospace structures and hardware for material loss or remaining thickness after rework or fabrication processes. Due to the number of variables which can affect the reliability of ultrasonic thickness measurements, it is only recommended for use when mechanical methods of measurement are not practical.
Rationale: To provide general instructions for accomplishing ultrasonic thickness measurements. Measurements can be made from one side of a material when access to the opposite side is restricted.This Recommended Practice is intended for, but not limited to use at maintenance and overhaul facilities to inspect aerospace structures and hardware for material loss or remaining thickness after rework or fabrication processes. Due to the number of variables which can affect the reliability of ultrasonic thickness measurements, it is only recommended for use when mechanical methods of measurement are not practical.
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【英文标准名称】:Specificationforsafetyofhouseholdandsimilarelectricalappliances.Particularrequirements.Dishwashers
【原文标准名称】:家用类似用途电器的安全规范.第202部分:特殊要求.第5节:洗碟机
【标准号】:BS3456Pt.202Sec.202.5-1990
【标准状态】:作废
【国别】:英国
【发布日期】:1990-10-31
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:Y62
【国际标准分类号】:97_040_40
【页数】:28P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforMeasuringFrictionandWearPropertiesofExtremePressure(EP)LubricatingOilsUsingSRVTestMachine
【原文标准名称】:用SRV试验机测量极压(EP)润滑油摩擦和磨损特性的标准试验方法
【标准号】:ASTMD6425-2005(2010)e1
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:D02.L0
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:coefficientoffriction;EPadditives;EPlubricants;lubricatingoil;oscillation;SRV;wear;EP(extreme-pressure)lubricants;Friction/frictionalproperties;Lubricatingoils;SRV(Schwingung/Reibung/Verschleiss)testmachine;Weartesting--petroleump
【摘要】:Thistestmethodcanbeusedtodetermineanti-wearpropertiesandcoefficientoffrictionofEPlubricatingoilsatselectedtemperaturesandloadsspecifiedforuseinapplicationsinwhichhigh-speedvibrationalorstart-stopmotionsarepresentforextendedperiodsoftimeunderinitialhighHertzianpointcontactpressures.Ithasfoundapplicationasascreeningtestforlubricantsusedingearorcam/followersystems.Usersofthistestmethodshoulddeterminewhetherresultscorrelatewithfieldperformanceorotherapplications.1.1Thistestmethodcoversanextremepressure(EP)lubricatingoil''scoefficientoffrictionanditsabilitytoprotectagainstwearwhensubjectedtohigh-frequency,linearoscillationmotion.TheprocedureisidenticaltothatdescribedinDIN51834.1.2Thistestmethodcanalsobeusedtodeterminetheabilityofanon-EPlubricatingoiltoprotectagainstwearanditscoefficientoffrictionundersimilartestconditions.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:7P.;A4
【正文语种】:英语