Weibull analysis of loading rate effect on the toughening mechanisms of ABS

  • Author / Creator
    Xu, Jie
  • Rubber-toughened polymers have extensive applications due to excellent mechanical performances. However, the toughening mechanisms are not completely understood, as current study approaches are too localized for quantitative analysis and deviation from mechanical testing has rarely been taken into consideration.
    In this study, Weibull statistics is applied to quantify the involvement of crazing and shear yielding mechanisms in poly(acrylonitrile butadiene styrene) (ABS) under tensile loading. Different loading rates were used to vary the involvement of each mechanism. In monotonic loading tests, the dominant deformation mechanism switches from crazing to shear yielding with the increase of crosshead speed. Crazing-dominant toughness values show narrow data scattering while those for shear yielding a broad distribution. The involvement of the deformation mechanisms can be varied through multi-stage loading at different crosshead speeds. Results from the study suggested that the Weibull analysis has the potential for quantifying the roles of various mechanisms in the deformation process.

  • Subjects / Keywords
  • Graduation date
    Fall 2009
  • Type of Item
  • Degree
    Master of Science
  • DOI
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
  • Language
  • Institution
    University of Alberta
  • Degree level
  • Department
  • Supervisor / co-supervisor and their department(s)
  • Examining committee members and their departments
    • Martin, Derek (Civil Engineering)
    • Ben Jar, P.-Y. (Mechanical Engineering)
    • Wang, Xiaodong (Mechanical Engineering)
    • Tang, Tian (Mechanical Engineering)