ピエゾフィルム応力ゲージのフィルム厚さの考慮による衝撃波面構造の高精度解析 How to Gain Higher Time Resolution in Shock Wavefront Structure by Considering Piezofilm Thickness

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A new method (Q<sub>t</sub> method) of gaining a higher time resolution of a shock wavefront structure is proposed for polycarbonate (PC) at particle velocities up to 1 km/s. The modified unsteady wave sensing system (M-UWSS), which we proposed before, using the Q<sub>1</sub> method instead of the conventional Q<sub>2</sub> method on the basis of plate impact experiment with three in-material PVDF gauges is applied to the construction of shock stress-strain curves up to the Hugoniot stress σ<sub>H</sub> and the Hugoniot strain ε<sub>H</sub>. However, piezofilm thickness has a considerable effect on wavefront structure. Thus, we derive from basic equations of piezoelectricity that the charge release per unit area is proportional to the ratio of the thickness of the shocked region to the total thickness of the piezofilm. It is demonstrated that the rise time of the shock charge density <i>q</i> in the piezofilm induced by such a shock in the Q<sub>2</sub>, Q<sub>1</sub> and Q<sub>t</sub> methods, in this order, is markedly decreasing. Among the three methods, the latest Q<sub>t</sub> method has the highest accuracy.

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  • 塑性と加工 = JOURNAL OF THE JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY  

    塑性と加工 = JOURNAL OF THE JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY 49(573), 1011-1014, 2008-10-25 

    The Japan Society for Technology of Plasticity

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各種コード

  • NII論文ID(NAID)
    10021854319
  • NII書誌ID(NCID)
    AN00135062
  • 本文言語コード
    JPN
  • 資料種別
    SHO
  • ISSN
    00381586
  • NDL 記事登録ID
    9693322
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-218
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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