ピエゾフィルム応力ゲージのフィルム厚さの<br>考慮による衝撃波面構造の高精度解析

• 佐藤 裕久

  東北学院大学工学部

• 古川 猛夫

  東京理科大学理学部

• 神鷹 伸

  東北学院大学工学部

• 松澤 悟

  東北学院大学工学部

書誌事項

タイトル別名

• How to Gain Higher Time Resolution in Shock Wavefront Structure<br>by Considering Piezofilm Thickness
• ピエゾフィルム オウリョク ゲージ ノ フィルム アツサ ノ コウリョ ニ ヨル ショウゲキ ハメン コウゾウ ノ コウセイド カイセキ

抄録

A new method (Q_t 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 Q₁ method instead of the conventional Q₂ 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_H and the Hugoniot strain ε_H. 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 q in the piezofilm induced by such a shock in the Q₂, Q₁ and Q_t methods, in this order, is markedly decreasing. Among the three methods, the latest Q_t method has the highest accuracy.

収録刊行物

• 塑性と加工

  塑性と加工 49 (573), 1011-1014, 2008

  一般社団法人 日本塑性加工学会

キーワード

• high-energy-rate forming
• plate impact experiment
• shock stress measurement
• shock wavefront
• PVDF stress gauge
• modified UWSS
• PC (polycarbonate)

詳細情報

• CRID: 1390001206499776128
• NII論文ID: 10021854319
• NII書誌ID: AN00135062
• DOI: 10.9773/sosei.49.1011
• ISSN: 18820166
• ISSN: 00381586
• NDL書誌ID: 9693322
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9693322
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可