ASTM_D_2343_-_09.pdf

Designation:D234309Standard Test Method forTensile Properties of Glass Fiber Strands,Yarns,andRovings Used in Reinforced Plastics1This standard is issued under the fixed designation D2343;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last 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 of the com-parative tensile properties of glass fiber strands,yarns,androvings in the form of impregnated rod test specimens whentested under defined conditions of pretreatment,temperature,humidity,and tension testing machine speed.This test methodis applicable to continuous filament,glass fiber materials thathave been coated with a resin compatible sizing.This methodis intended for use in quality control and R&D,and should notbe used to develop composites design data.NOTE1This method is technically equivalent to the short methoddescribed in ISO 9163.NOTE2Prime consideration should be given to the use of a polymericbinder that produces specimens that yield the highest consistent values forthe glass fiber material under test.Tensile properties may vary withspecimen preparation,resin impregnation system,and speed and environ-ment of testing.Consequently,where precise comparative results aredesired,these factors must be carefully controlled.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.NOTE3Prime consideration should be given to the use of a polymericbinder that produces specimens that yield the highest consistent values forthe glass fiber material under test.Tensile properties may vary withspecimen preparation,resin impregnation system,and speed and environ-ment of testing.Consequently,where precise comparative results aredesired,these factors must be carefully controlled.1.3 This standard does not purport to address all of thesafety concerns,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 TestingD883 Terminology Relating to PlasticsD3039/D3039M Test Method for Tensile Properties of Poly-mer Matrix Composite MaterialsD5083 Test Method for Tensile Properties of ReinforcedThermosetting Plastics Using Straight-Sided SpecimensE4 Practices for Force Verification of Testing MachinesE6 Terminology Relating to Methods of Mechanical Testing2.2 ISO Standard:ISO 9163 Textile GlassRovingsManufacture of TestSpecimens and Determination of Tensile Strength ofImpregnated Rovings3.Terminology3.1 Definitions:3.1.1 Definitions of terms and symbols relating to this testmethod appear in Terminologies E6 and D883.4.Summary of Test Method4.1 This test method consists of impregnating glass fiberstrands,yarns,or rovings with a suitable polymeric bindermaterial and loading the resulting test specimens to failure in atension testing machine having a constant-rate-of crossheadmovement.The cross sectional area is determined from skeinsof glass fiber taken before and after each set of test specimens.After impregnation and curing,the specimens shall either betabbed using glass fiber mat or cardboard and tested withstandard grips;or the ends shall be sanded with 240 gritsandpaper or fine emery cloth and tested using rubber facedgrips.1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.18 on Reinforced Thermoset-ting Plastics.Current edition approved Sept.1,2009.Published September 2009.Originallyapproved in 1965.Last previous edition approved in 2008 as D2343-08.DOI:10.1520/D2343-09.2For referenced ASTM standards,visit the 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 Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Significance and Use5.1 Tensile properties determined by this test method are ofvalue for identifying and characterizing materials for controland specification purposes as well as for providing data forresearch and development studies.5.2 This test method is intended for use in testing resin-compatible sized glass fiber materials that have been designedspecifically for use with certain generic types of plastics.Theuse of a resin impregnant that is compatible with the reinforce-ment material under test produces results that are most repre-sentative of the