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SAE J1927 Cumulative Damage Analysis for Hydraulic Hose Assemblies

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Product Code:SAE J1927
Title:Cumulative Damage Analysis for Hydraulic Hose Assemblies
Issuing Committee:Hydraulic Hose And Hose Fittings Committee
Scope:This SAE Information Report is intended to provide the hydraulic system analyst with a procedure which will assist in the selection and use of high-pressure wire reinforced hydraulic hose assemblies. Many construction, agricultural, industrial, or commercial equipment systems utilize hydraulic hose assemblies that are subjected to irregular cyclic pressure variations (cannot be approximated by a constant amplitude pressure cycle). This document relates damage done by pressure cycles with the pressure-life performance curve for the hose assembly being evaluated, using a linear damage rule to predict fatigue life similar to that used for predicting metal fatigue life. More detailed information on the subject may be found in SAE Paper No. 880713. The accuracy of cumulative damage calculations is directly related to proper measurement of the service pressure history and pressure-life performance for the hose assembly being evaluated. Final selection of a hose assembly must also consider installation and maintenance as noted in SAE J1273.
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【英文标准名称】:StandardSpecificationforLiquidAppliedMoistureCuredPolyurethaneCoatingUsedinSprayPolyurethaneFoamRoofingSystem
【原文标准名称】:喷涂聚氨酯泡沫屋顶系统用液体水分固化聚氨酯涂层的标准规范
【标准号】:ASTMD6947-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D08.06
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:涂层;泡沫;液体;水分;聚氨酯;屋顶材料;喷涂
【英文主题词】:elastomericcoating;moisturecured;polyurethanecoating;roof;spraypolyurethanefoam
【摘要】:1.1Thisspecificationcoversasinglecomponent,moisturecured,elastomericurethanepolymercoatingusedasaprotectivecoatingforspraypolyurethanefoamroofingsystems.1.2Thisspecificationdoesnotprovideguidanceforapplication.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thefollowingprecautionarycaveatpertainsonlytothetestmethodportions,Sections5and6.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatoryrequirementspriortouse.
【中国标准分类号】:Q25
【国际标准分类号】:91_100_60
【页数】:3P.;A4
【正文语种】: