Micromechanical Analysis of Crack Closure Mechanism for Intelligent Material Containing TiNi Fibers (2nd Report)Numerical Calculation of Stress Intensity Factor in the Process of Shape Memory Shrinkage of TiNi Fibers

DOI Web Site Web Site 被引用文献1件 参考文献6件
  • ARAKI Shigetoshi
    Department of Mechanical and System Engineering, Kyoto Institute of Technology
  • ONO Hiroyuki
    Department of Mechanical and System Engineering, Kyoto Institute of Technology
  • SAITO Kenji
    Emeritus Professor of Kyoto Institute of Technology

書誌事項

タイトル別名
  • Micromechanical Analysis of Crack Closure Mechanism for Intelligent Material Containing TiNi Fibers
  • (2nd Report, Numerical Calculation of Stress Intensity Factor in the Process of Shape Memory Shrinkage of TiNi Fibers)

この論文をさがす

抄録

In our previous study, the micromechanical modeling of an intelligent material containing TiNi fibers was performed and the stress intensity factor KI at the tip of the crack in the material was expressed in terms of the magnitude of the shape memory shrinkage of the fibers and the thermal expansion strain in the material. In this study, the value of KI at the tip of the crack in the TiNi/epoxy material is calculated numerically by using analytical expressions obtained in our first report. As a result, we find that the KI value decreases with increasing shrink strain of the fibers, and this tendency agrees with that of the experimental result obtained by Shimamoto etal.(Trans. Jpn. Soc. Mech. Eng., Vol. 65, No. 634 (1999), pp. 1282-1286). Moreover, there exists an optimal value of the shrink strain of the fibers to make the KI value zero. The change in KI with temperature during the heating process from the reference temperature to the inverse austenitic finishing temperature of TiNi fiber is also consistent with the experimental result. These results can be explained by the changes in the shrink strain, the thermal expansion strain, and the elastic moduli of TiNi fiber with temperature. These results may be useful in designing intelligent materials containing TiNi fibers from the viewpoint of crack closure.

収録刊行物

被引用文献 (1)*注記

もっと見る

参考文献 (6)*注記

もっと見る

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