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ASTM_D_5942_-_96.pdf

1、Designation:D594296StandardTestMethodforDeterminingCharpyImpactStrengthofPlastics1Thisst a ndar disissuedundert hefixeddesignationD5942;t henum berim m ediat elyfollowingt hedesignat ionindicat est heyearoforiginaladopt ionor,int heca seofrevision,t heyearoflastr evision.Anum berinpar enthesesindica

2、t est heyea roflastreapproval.Asuperscriptepsilon(e)indica t esanedit or ialchangesincet helastrevisionorreapproval.1.Scope1.1Thist estm et hodcoversaprocedurefordet erm iningt heCha rpyim pa ctst rengt hofpla st icsunderdefinedcondit ions.Anum berofdifferentt ypesofspecim ena ndt estconfigura t ion

3、sa redefined.Differentt estpa ra m etersa respecifieda ccordingt ot het ypeofm a t eria l,t ypeoft estspecim en,a ndt ypeofnot ch.1.2Thist estm et hodisusedforinvest iga t ingt hebeha viorofspecifiedtypesofspecim enundertheim pa ctcondit ionsdefineda ndforest im a t ingt hebrit t lenessort oughnesso

4、fspecim enswithint helim it a t ionsinherentint het estcondit ions.1.3Thist estm et hodha sagrea t erra ngeofa pplica bilit yt ha nt ha tgiveninTestMet hodD5941a ndism oresuit a blefort het est ingofm a t eria lsshowingint erla m ina rshea rfra ct ureorofm a t eria lsexhibit ingsurfa ceeffect sduet

5、oenvironm ent a lfa ct ors.1.4Thist estm et hodissuit a bleforusewit ht hefollowingra ngeofm a t eria ls:1.4.1R igidt herm opla st icsm oldinga ndext rusionm a t eria ls,includingfilleda ndreinforcedcom poundsina ddit iont ounfilledt ypes;rigidt herm opla st icsheet s;1.4.2Rigidther moset tingmoldin

6、gmater ials,includingfilleda ndreinforcedcompounds;rigidt herm oset t ingsheet s,includingla m ina t es;1.4.3Fiber-reinforcedt herm oseta ndt herm opla st iccom pos-it esincorpora t ingunidirect iona lornonunidirect iona lrein-forcementssucha sm a t,wovenfa brics,wovenr ovings,choppedst ra nds,combi

7、na tiona ndhybridreinforcem ent s,rov-ings,a ndm illedfibers;sheet sm a defrompre-im pregna t edm a t eria ls(prepregs);a nd1.4.4Therm ot ropicliquid-cryst a lpolym ers.1.5Thist estm et hodisnotnorm a llysuit a bleforusewit hrigidcellula rm a t eria lsa ndsa ndwichst ruct uresconta iningcellula rm a

8、 t eria l.Also,not chedspecim ensa renotnorm a llyusedforlong-fiber-reinforcedcom posit esorfort herm ot ropicliquid-cryst a lpolym ers.1.6Thist estm et hodisa da ptedt ot heuseofspecim enst ha tm a ybeeit herm oldedt ot hechosendim ensions,m a chinedfromt hecent ra lport ionofasta nda rdm ult ipurp

9、oset estspecim en(seeISO3167(Specifica t ionD5936),orm a chinedfromfinisheda ndsem ifinishedproduct ssucha sm oldings,la m ina t es,a ndext rudedorca stsheet.1.7Thist estm et hodspecifiespreferreddim ensionsfort het estspecim en.Test st ha ta reconduct edonspecim ensofdifferentdim ensionsa ndnot che

10、s,oronspecim enst ha ta reprepa redunderdifferentcondit ions,m a yproduceresult st ha ta renotcompa ra ble.Ot herfa ct ors,sucha st heenergyca pa cit yoft hependulum,it sim pa ctvelocit y,a ndt hecondit ioningoft hespecim ens,ca na lsoinfluencet heresult s.Consequent ly,whencom pa ra t iveda t aa re

11、required,t hesefa ct orsm ustbecont rolleda ndrecordedca refully.1.8Thist estm ethodshouldnotbeuseda sasourceofda t afordesignca lcula tionsofcom ponent s.Inform a t ionont het ypica lbeha viorofam a t eria lca nbeobt a ined,however,byt est inga tdifferentt empera t ures,byva ryingt henot chra diuso

12、rt het hick ness,orbot h,a ndbyt est ingspecim ensprepa redunderdifferentcondit ions.1.9Thist estm et hodisident ica lt oISO179.Thist estm et hodiscom pa ra blet oTestMet hodD256,butneit hert estm et hodshouldbesubst it ut edfort heot her.Thetwot estm et hodsm a ydifferwit hrespectt ot estspecim end

13、im ensions,t estspecim encondit ioning,t estequipment,t est ingcondit ions,et c.Thet wot estm et hodsm a ynotgivet hesa m eresult s.1.10Theva luesst a t edinSIunit sa ret oberega rdeda st hest a nda rd.Theva luesgiveninpa renthesesa reforinform a t iononly.1.11Thi sstan darddoesn otpurporttoaddressa

14、llofth esafetyc on c ern s,i fan y,assoc i atedw i thi tsuse.Iti sth erespon si bi li tyoftheuserofthi sstan dardtoestabli shappro-pri atesafetyan dhealthprac ti c esan ddetermi n etheapplica-bi li tyofregulatoryli mi tati on spri ortouse.2.Refer encedDocument s2.1ASTMStan dards:D256TestMet hodforDe

15、t erm iningt hePendulumIm pa ctR esist a nceofNot chedSpecim ensofPla st ics2D5936SpecificationforMult ipur poseTestSpecimensUsedforTest ingPla st ics3D5939Pra ct iceforPr epa ringMult ipurposeTestSpecim ensa ndBa rsofTherm opla st icsbyInject ionMoulding3D5940Pra ct iceforPrepa ringSm a llPla t eTe

16、stSpecim ensofTherm opla st icsbyInject ionMoulding3D5941TestMet hodforDet erm iningt heIzodImpa ctSt rengt hofPla stics31Thistestm et hodisundert hejurisdict ionofASTMCom m it t eeD-20onPlast icsandist hedirectr esponsibilit yofSubcom m it t eeD20.61onUSATechnicalAdvisoryGrou pforISO/TC61onPlast ics.Curr entedit iona ppr ovedJune10,1996.PublishedAugust1996.2An n ualBookofASTMStan dards,Vol08.01.3An n ualBookofASTMStan dards,Vol08.03.1AMERICANSOCIETYFORTESTINGA NDMATERIALS100BarrHarborDr.,WestCo

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