延性高分子材料の切欠ぜい性

DOI Web Site

書誌事項

タイトル別名
  • Brittle Fracture of Notched Ductile Polymers
  • エンセイ コウブンシ ザイリョウ ノ キリカキ ゼイセイ

この論文をさがす

抄録

To study brittle fracture of ductile polymers, tensile tests were conducted on cylindrical bars of polycarbonate, poly (vinyl chloride) and polyethylene with a circular round notch. The notchless specimens of these polymers fractured in a ductile manner after necking, but when the plastic constraint due to local yielding at the notch root became above a critical value they showed brittle fracture. Morphological observations revealed that the fracture origins were a microvoid for polycarbonate and poly (vinyl chloride) and a number of microcracks for polyethylene. They were considered to be nucleated by a hydrostatic stress component caused by plastic constraint ahead of the fully developed plastic deformation zone at the notch section.

収録刊行物

  • 材料

    材料 28 (311), 759-764, 1979

    公益社団法人 日本材料学会

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ