1、Designation:D229016Standard Test Method forApparent Hoop Tensile Strength of Plastic or ReinforcedPlastic Pipe1This standard is issued under the fixed designation D2290;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、 revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers the determination
3、 of the com-parative apparent tensile strength of most plastic productsutilizing a split disk or ring segment test fixture,when testedunder defined conditions of pretreatment,temperature,humidity,and test machine speed.This test method is appli-cable to reinforced-thermosetting resin pipe regardless
4、 offabrication method.This test method also is applicable toextruded and molded thermoplastic pipe.Procedure A is used for reinforced-thermosetting resin pipe;Procedure B is used for thermoplastic pipe of any size;Procedure C is used for thermoplastic pipe with nominaldiameter of 412in.(110 mm)and g
5、reater.Procedure D is usedfor polyethylene pipe with a nominal diameter of 14 in.(350mm)and greater and preferably having wall thickness 1 in.(25mm)and greater.Procedure E is used for polyvinyl chloride(PVC)pipe with a nominal diameter of 14 in.(350 mm)andgreater and having wall thickness 1 in.(25 m
6、m)and greater.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns,
7、if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for Test
8、ingD1599 Test Method for Resistance to Short-Time HydraulicPressure of Plastic Pipe,Tubing,and FittingsE4 Practices for Force Verification of Testing Machines3.Summary of Test Method3.1 For Procedures A,B,and C,the test specimen is loadedthrough the suggested self-aligning split disk test fixture(Fi
9、g.1)which applies tensile stress to the test ring.An apparenttensile strength rather than a true tensile strength is obtained inthis test because of a bending moment imposed during test atthe split between the split disk test fixture.This moment isinduced by the change in contour of the ring between
10、 the twodisk sections as they separate.The test fixture is designed tominimize the effect of this bending moment.3.2 For Procedure D,ring segment test specimen pairs areloaded into the suggested self-aligning test fixtures(Fig.2)thatare designed to apply direct tensile stress to the reduced areasof
11、the ring segment test specimens(Fig.3)with minimalbending moment.3.3 For Procedure E,a single ring segment test specimen isloaded into the suggested self-aligning test fixture(Fig.4)thatis designed to apply direct tensile stress to the reduced areas ofthe ring segment test specimen(Fig.5)with minima
12、l bendingmoment.4.Significance and Use4.1 Split disk and ring segment tensile tests,properlyinterpreted,provide reasonably accurate information with re-gard to the apparent tensile strength of plastic pipe whenemployed under conditions approximating those under whichthe tests are made.4.2 Ring tensi
13、le tests may provide data for research anddevelopment,engineering design,quality control,acceptanceor rejection under specifications,and for special purposes.Thetest cannot be considered significant for applications differingwidely from the load-time scale of the standard test.NOTE1Procedure C has b
14、een used on polyethylene and polybutylenepipe to produce results equivalent to Quick Burst results(Test MethodD1599)for 4 in.to 8 in.pipes.1This test method is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.40 on TestMethods
15、.Current edition approved Aug.1,2016.Published November 2016.Originallyapproved in 1964.Last previous edition approved in 2012 as D2290 12.DOI:10.1520/D2290-16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of AST
16、MStandards 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 Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Apparatus5.1 MicrometersSuitable ball anvil-type micrometers,reading to at least 0.001 in.,for measuring the width andthickness of the test specimens.5.2 Testing MachineA universal testing machine of theconstant-rate-of-cross-hea
