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IMPACT TESTINGIMPACT TESTING

Charpy & Izod MethodsCharpy & Izod Methods

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PATAH GETAS & PATAH ULETPATAH GETAS & PATAH ULET

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IZOD

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CHARPY

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UKURANUKURAN

Ductile to brittle transition tem erature DBTTDuctile to brittle transition tem erature DBTT

FENOMENAFENOMENA

Material ulet mengalamiMaterial ulet mengalami patah getaspatah getas

Laju pembebanan/peregangan tinggiLaju pembebanan/peregangan tinggi Temperatur rendahTemperatur rendah

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PersentasePersentase enisenis ermukaanermukaan atahatah:: MengukurMengukur dandan menghitungmenghitung luasluas permukaanpermukaan patahpatah getasgetas

MembandingkanMembandingkan dengandengan standarstandar permukaanpermukaan patahanpatahan

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Lateral ex ansionLateral ex ansion

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Shear fracture fibrous areaShear fracture fibrous area

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TEMPERATUR TRANSISI:TEMPERATUR TRANSISI: Temperatur pada Energi Impak tertentu (mis. 20 J)Temperatur pada Energi Impak tertentu (mis. 20 J)

Temperatur pada penampakan permukaan patahan tertentu (mis. 50 % ulet)Temperatur pada penampakan permukaan patahan tertentu (mis. 50 % ulet)

Tem eratur ada kondisi dimulai ter adi 100% atah ulet konservatif Tem eratur ada kondisi dimulai ter adi 100% atah ulet konservatif

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VISUAL &VISUAL & SEMSEM EXAMINATIONEXAMINATION

CHARPY IMPACT TEST : DUCTILE TO BRITTLE TRANSITIONCHARPY IMPACT TEST : DUCTILE TO BRITTLE TRANSITION

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VISUAL &VISUAL & SEMSEM EXAMINATIONEXAMINATION

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