標題: PRECRACK HYSTERESIS ENERGY OF ELASTOMER-MODIFIED POLYCARBONATES IN DETERMINING ITS DUCTILE BRITTLE TRANSITION
作者: CHANG, FC
HSU, HC
交大名義發表
應用化學系
National Chiao Tung University
Department of Applied Chemistry
公開日期: 20-三月-1993
摘要: For ductile fracture, the precrack plastic zone has to exceed a critical value, and precrack hysteresis energy has been employed to characterize the plastic zone. The presence of elastomer in polycarbonate is able to enhance precrack hysteresis and, therefore, toughens the polycarbonate matrix. Higher precrack hysteresis means that a greater fraction of the input energy converts into plasticity and leaves less storage energy available to strain the crack tip for crack initiation. If the precrack plastic zone is above the critical value before onset of initiation, the crack growth developed thereafter will be effectively contained within the domain of the plastic zone and results in mass shear, yielding ductile fracture. In this paper, the elastomer toughening is classified as promotion of ductile failure through mass shear yielding and the localized energy dissipation processes. The localized energy dissipations are further divided into the activities occurring on and underneath the fracture surface. A different approach in interpreting the elastomer-toughening mechanism is discussed in detail.
URI: http://dx.doi.org/10.1002/app.1993.070471214
http://hdl.handle.net/11536/3087
ISSN: 0021-8995
DOI: 10.1002/app.1993.070471214
期刊: JOURNAL OF APPLIED POLYMER SCIENCE
Volume: 47
Issue: 12
起始頁: 2195
結束頁: 2205
顯示於類別:期刊論文


文件中的檔案:

  1. A1993KP17600014.pdf