1、Designation:D214321Standard Test Method forCyclic Pressure Strength of Reinforced,ThermosettingPlastic Pipe1This standard is issued under the fixed designation D2143;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last re
2、vision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers the determination of the failurecharacteristics of reinforced plastic pipe when subjected tocyclic intern
3、al hydraulic pressure.It is limited to pipe in whichthe ratio of outside diameter to wall thickness is 10:1 or more.1.2 The values stated in inch-pound units are to be regardedas the standard.The values in parentheses are for informationonly.1.3 This standard does not purport to address all of thesa
4、fety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.NOTE1There is no known ISO equivalent to this standard.1.4 Thi
5、s international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(T
6、BT)Committee.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD2992 Practice for Obtaining Hydrostatic or Pressure De-sign Basis for“Fiberglass”(Glass-Fiber-ReinforcedThermosetting-Resin)Pipe and FittingsD3567 Practice for Determining Dimensions of“Fibergl
7、ass”(Glass-Fiber-Reinforced Thermosetting Resin)Pipe andFittings3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 failurethe transmission of the test fluid through thepipe wall in any manner,whether it be wall fracture,localizedleaking,or weeping at a distance greater than one di
8、ameterfrom the end closure(specimens failing within one diameter ofthe end closure shall be discarded).3.1.2 failure detectora devise that measures the electricalresistance between the test fluid and a conductive material,wrapped around the circumference of the test specimen,andwhich will indicate f
9、ailure when 1)the resistance is lowered toa range from 10 to 20 meg-ohm or 2)for the case of municipalwater,when the first drop of fluid has passed through the wallof the specimen.3.1.3 localized leakingfailure that occurs as small frac-tures(one or more in a test specimen)that permit the test fluid
10、to be transferred at a rate that is measured by the failuredetector.3.1.4 weepinga general transmission of the test fluidthrough the pipe,without visible fracture,at a sufficient rate tobe measured by the failure dectector,or in the case of largermagnitudes of fluid transmission appear to be moistur
11、e con-densation on the specimen.3.1.5 wall fracturefailure by a break in the pipe wallcausing immediate loss of test fluid and continued loss atessentially no pressure.4.Summary of Test Method4.1 This test method consists of exposing pipe specimens tocyclic internal pressures at several different pr
12、essure levels andmeasuring the cycles to failure at these different levels.Testtemperatures are obtained by circulating salt water or munici-pal water through the specimens.5.Significance and Use5.1 The values obtained by this test method are applicableonly to conditions that specifically duplicate
13、the proceduresused.5.2 After the regression characteristics of a pipe materialand manufacturing process have been determined by this testmethod,one pressure may be used for quality-control purposes.1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct respons
14、ibility of Subcommittee D20.23 on Reinforced Thermoset-ting Resin Piping Systems and Chemical Equipment.Current edition approved April 1,2021.Published April 2021.Originallyapproved in 1963.Last previous edition approved in 2015 as D2143 15.DOI:10.1520/D2143-21.2For referenced ASTM standards,visit t
15、he ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr H
16、arbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1This pressure shall be one of the points used in the originaldetermination and be agreed upon between the individual
