rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Impact fracture behavior of model system modified polypropylene
  name:
    name part: Estrada, Albert Jesse.
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 2000
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    form: remote
    extent: x, 110 leaves : illustrations ; 28 cm.
  abstract: The morphology and impact properties of polypropylene copolymer blends modified with talc and/or ethylene-propylene (EPR) or ethylene-octene (EOR) rubber were studied. Izod impact, instrumented Charpy impact, and high speed single-edge-notched three-point-bend tests were performed to obtain the values of fracture toughness. A correlation exists between the Izod impact values and the size of the damage zone after fracture. Damage analysis using the double-notch four-point-bend Charpy impact test was performed and the specific damage mechanisms that occurred during fracture were identified. The impact strength is greatly increased with the addition of EPR and EOR rubber. The specific fracture mechanisms for the rubber toughened blends include rubber particle cavitation, crazing, and shear yielding. A further increase in impact strength, with an additional increase in stiffness upon addition of talc is also found. The additional filler particle-matrix debonding dilatational mechanism is believed to provide another means to relieve the triaxial stress state ahead of the crack tip and facilitate additional shear yielding. Attempts to determine morphology differences between the EOR and EPR blends through the use of transmission electron microscopy and scanning electron microscopy were made.
  note: by Albert Jesse Estrada.
  note: "Major subject: Mechanical Engineering".
  note: Vita.
  note: Also available online.
  note: Issued also on microfiche from Lange Micrographics.
  note: M.S. Texas A&M University 2000.
  note: Includes bibliographical references (leaves 105-109).
  subject:
    topic: Major mechanical engineering
  identifier: https://hdl.handle.net/1969.1/ETD-TAMU-2000-THESIS-E895
  related item:
    location:
      url: https://hdl.handle.net/1969.1/ETD-TAMU-2000-THESIS-E895
  record info:
    record content source: TXA
    record creation date: 010718
    record change date: 20220103114501.0
    record identifier: in00001619192