ASTM D 3333-1990 试验用人造短纤维、次等化学纤维或亚麻短纤维的取样

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【英文标准名称】:SelectionofAsbestos-CementPressurePipe,4-inthrough16-in(100-mmthrough400-mm)forWaterDistributionSystems
【原文标准名称】:给水系统用4到16英寸(100mm到400mm)的石棉水泥压力管的选择
【标准号】:ANSI/AWWAC401-1993
【标准状态】:作废
【国别】:美国
【发布日期】:1993
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:压力管;给水
【英文主题词】:watersupply;pressurepipes
【摘要】:
【中国标准分类号】:Q14
【国际标准分类号】:23_040_50;13_060_01
【页数】:
【正文语种】:英语


Product Code:SAE J2488
Title:SAE No.2 Friction Test Machine 6000 r/min Stepped Power Test
Issuing Committee:Automatic Transmission Friction Standards Committee
Scope:This SAE Recommended Practice is intended as the definition of a standard test, but may be subject to frequent change to keep pace with experience and technical advances. This should be kept in mind when considering its use.The SAE No. 2 Friction Test Machine is used to evaluate the friction characteristics of automatic transmission plate clutches with automotive transmission fluids. It can also be used to conduct durability tests on wet friction systems.The specific purpose of this document is to define a 6000 r/min Stepped Power Test for the evaluation of wet friction system performance variation as a function of power level. This procedure uses an initial engagement speed of 6000 r/min and is intended as a standard procedure for common use by both suppliers and end users.The only variables selected by the supplier or user of the friction system are:a. Friction Materialb. Fluidc. Reaction PlatesThese three variables must be clearly identified when reporting the results of using this test. If any of the test parameters or system hardware as described in this document are changed, other than the friction material, test fluid, or reaction plates, the data may not be reported as having been obtained using this document.This procedure is not intended to evaluate the initial coefficient or break-in characteristics. For this information, refer to SAE J2490 SAE No. 2 Friction Test Machine 碌PVT Test.