銅膜材の屈折疲労き裂伝ぱ挙動に及ぼす圧延方向の影響 : 混合モード膜疲労試験とき裂に沿う不連続変位分布計測に基づいて  [in Japanese] Effect of Rolling Direction on Bent Fatigue Crack Propagation Behavior in Copper Film : Based on Discontinuous Displacement along a Crack Obtained by Using Film Fatigue Testing under Mixed-Mode Condition  [in Japanese]

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Author(s)

Abstract

Since film materials used in electronic devise are often loaded from various directions, the crack initiated in such devises seems to propagate to various directions with bending. Therefore, it is important to consider about the fatigue crack propagation behavior under mixed-mode conditions with the crack opening and the crack sliding displacement. It this study, by using a new fatigue testing method in which the film was bonded to the cyclic loaded base plate with the inclined ellipsoidal through hole from the loading axis, the fatigue crack propagation behavior was discussed under mixed-mode conditions for a thin copper film. From the FEM analysis, stress on the film was uniform and principal stress direction was inclined from the loading axis of the base plate. Mode I and mode II stress intensity factors at the bent fatigue crack tip were calculated by using a displacement extrapolation method. As a result, the bent fatigue crack was initiated from the precrack and the crack propagation direction was almost perpendicular to the principal axis for an annealed copper film. On the other hand, the bent crack inclined to the rolling direction for cold rolled copper film with crystal grains extended to the rolling direction.

Journal

  • TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 76(768), 1068-1075, 2010

    The Japan Society of Mechanical Engineers

References:  17

Codes

  • NII Article ID (NAID)
    110007682105
  • NII NACSIS-CAT ID (NCID)
    AN0018742X
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    0387-5008
  • NDL Article ID
    10815671
  • NDL Source Classification
    ZM16(科学技術--科学技術一般--工業材料・材料試験)
  • NDL Call No.
    Z14-737
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE 
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