Designation:D5734–95(Reapproved2001)StandardTestMethodforTearingStrengthofNonwovenFabricsbyFalling-Pendulum(Elmendorf)Apparatus1ThisstandardisissuedunderthefixeddesignationD5734;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthemeasurementoftheaverageforcerequiredtopropagateasingle-riptearstartingfromacutinanonwovenfabricusingafalling-pendulum(Elmendorf)apparatus.1.2ThisstandardElmendorfteartesterwithinterchange-ablependulumshasbecomethepreferredtestapparatusfordeterminingtearingstrengthupto6400grams-force.Itisrecognizedthatsomeoldertestinstrumentswithaugmentingweightscontinuetobeused.Asaconsequence,theseoldertestinstrumentsmaybeusedwhenagreeduponbetweenthepurchaserandthesupplier.Theconditionsfortheolderunitsasusedwiththistestmethodareincludedintheappendix.Fortearingstrengthabove6400grams-force,ahigh-capacitytestinstrumentisavailableequippedwithaugmentingweightstoincreasethecapacity.1.3Thistestmethodisapplicabletomostnonwovenfabricsthataretreatedoruntreated,includingheavilysized,coated,orresin-treated,providedthefabricdoesnottearinthedirectioncrosswisetothedirectionoftheforceappliedduringthetest.Iftheteardoesnotoccurinthedirectionofthetest,thefabricisconsidereduntearableinthatdirectionbythistestmethod.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesmaybeapproximate.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:D123TerminologyRelatingtoTextiles2D689TestMethodforInternalTearingResistanceofPa-per3D1776PracticeforConditioningTextilesforTesting2D4848Terminolog...
