Designation:F2844−11(Reapproved2015)AnAmericanNationalStandardStandardTestMethodforDisplacementCompressionofSoftballandBaseballBatBarrels1ThisstandardisissuedunderthefixeddesignationF2844;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribesacomparativemeasurementmethodfordeterminingthecompressionforceofsoftballandbaseballbatbarrelsasdefinedbyastaticcompressiondisplace-menttest.1.2Thisstandardisnotintendedtodefinetheperformanceofsoftballorbaseballbatsbuttodeterminetheintrinsicbarrelcompressionofaspecificbat.1.3Thisstandardcanbeusedtocomparetherelativebarrelcompressionforceofbatsusingarelativelyslow,non-impactloadingrate.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.Terminology2.1DefinitionsofTermsSpecifictoThisStandard:2.1.1barrelcompression,n—theforcereadingtodeflectthebatbarrelbythespecifieddistance.2.1.2barreldeflection,n—thedisplacementoftheloadheadduringthetest.2.1.3battaper,n—sectionofthebatwherethebarreldiameterbeginstodecreasetojointhehandleofamuchsmallerdiameter.2.1.4force,n—theamountofresistanceappliedperpendicu-lartothesurfaceofabatbarreltocausethebarreltodisplace.2.1.5non-solidbat,n—abatofhollowconstruction.2.1.5.1Discussion—Batmaybefilledwithinsertsorflex-iblematerialsandstillbeconsideredanon-solidbat.3.SignificanceandUse3.1Thistestmethodoffersameanstocomparethebarrelcompressionofsoftballandbaseballbats.Thistestisnotintendedforwoodorsol...
