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Pendahuluan Fisika Material (9)

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  • 1. Sesion #09
    PendahuluanFisika Material
    Dr. ErfanHandoko
    JurusanFisika
    FakultasMatematikadanIlmuPengetahuanAlam
  • 2. Outline
    ANELASTICITY
    SIFAT-SIFAT ELASTIK MATERIAL
    PLASTIC DEFORMATION
    TENSILE PROPERTIES
    DUCTILITY
    RESILLIENCE
    1/18/2011
    © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
    2
  • 3. Bab 6
    sifat-sifatmekanikpadalogam
    1/18/2011
    © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
    3
  • 4. ANELASTICITY
    Deformasi elastic akanberlanjutsetelahpemberiantegangan, danketikabebandihilangkandibutuhkanbebebapawaktu agar dapatkembalisepertisemula.
    Anelasticitymerupakankebergantungantingkahlakuelastikterhadapwaktu
    Penyebab:
    • Proses microscopic dan atomistic yang menjagadeformasi
    1/18/2011
    © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
    4
  • 5. SIFAT-SIFAT ELASTIK MATERIAL
    Ketika tensile stress diberikanpadasebuahsampellogam, makadihasilkansebuahelastic elongationdanstrainpadaarahdiberikannyategangan.
    KeterkaitanantaraSheardanelastic modulliterhadaprasio Poisson
    1/18/2011
    © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
    5
  • 6. 1/18/2011
    © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
    6
  • 7. 1/18/2011
    © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
    7
  • 8. PLASTIC DEFORMATION
    Dalamperspektifatomik, deformasiplastisberkaitandenganrusaknyaikatandengan atom terdekankemudianmembentukikatanbarudengan atom terdekat yang lain karenaperpindahan atom danmolekuldalamjumlhabesarrelatifterhadapsatudengan yang lainnya.
    1/18/2011
    © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
    8
  • 9. TENSILE PROPERTIES
    1/18/2011
    © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
    9
  • 10. DUCTILITY
    1/18/2011
    © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
    10
  • 11. RESILLIENCE
    Resillienceadalahkemampuan material untukmenyerapenergiketika material tersebutterdeformasisecaraelastik.
    1/18/2011
    © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
    11
  • 12. Thank you….
    Material Science and Engineering An Introduction (William D. Callister)
    1/18/2011
    © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
    12
    Sumber :

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