Designation:F1683−09StandardPracticeforCreasingorBendingaMembraneSwitch,MembraneSwitchFlexTailAssemblyorMembraneSwitchComponent1ThisstandardisissuedunderthefixeddesignationF1683;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeestablishesamethodforthecreasingorbendingofanypartofamembraneswitch.1.2Thispracticecanbeusedwithothertestmethodstoachievespecifictestresults.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2F2749TestMethodforDeterminingtheEffectsofCreasingaMembraneSwitchorAssemblyF2750TestMethodforDeterminingtheEffectsofBendingaMembraneSwitchorAssembly3.Terminology3.1Definitions:3.1.1bend—toforcefromastraightformintoadifferentandespeciallyacurvedone.3.1.1.1Discussion—Inthiscaseno“hard”orangledcreaseorfoldistooccur.Thesubstratewillonlybeformedintoaradius.3.1.2bendcycle—afoldofasamplearoundaspecifiedmandrelwhichis“rolled”inonedirection,followedbyrollingintheoppositedirection,returningthesampletoitsoriginalposition(seeFig.1).3.1.3crease—aridgeorgroovemadebyfoldingandpress-ing.3.1.3.1Discussion—Inthiscaseafoldmarkinthesubstratewillbecausedbyaweightrolledoverafoldthatwilllikelyremaininthesubstrateaftertesting.3.1.4creasecycle—a180°creasefollowedbyaflatteningofthecrease(seeFig.2).3.1.5mandrel—acylindricallyshapedmetalrod,suchasbrazingordrillrod.3.1.6membraneswitch—amomentaryswitchingdeviceinwhichatleastonecontactison,ormadeof,aflexiblesubstrate.3.1.7membraneswitchtail—aflexibleportionofamem-b...
