漏えい表面波速度測定によるセラミックス表層部の非破壊特性評価

• 岡出 元宏

• 池田 泰

• 佐藤 剛志

• 川嶋 紘一郎

書誌事項

タイトル別名

• Nondestructive Characterization of Ceramics Surface with Leaky Surface Wave Velocity.
• ロウエイ ヒョウメンハ ソクド ソクテイ ニヨル セラミックス ヒョウソウブ

抄録

Sintered ceramics often have different properties at the near surface from in the middle. With surface waves of different frequency or wavelength, we can estimate the depth-dependent subsurface properties, because the surface wave propagates in surface layer of about one wavelength. In this paper, the leaky surface wave velocities of Si₃N₄ ceramics with various porosity have been measured by a scanning acoustic microscope at 195 and 440 MHz and by time-of-flight measurement with a PVDF line focused sensor at 36 MHz. The velocities measured at 440 MHz are much higher than those at 36MHz, while the latter are very close to the Rayleigh wave velocities calculated with bulk velocities measured at 5 MHz. This shows elastic constant near surface is higher than that in the middle.

収録刊行物

• 日本機械学会論文集Ａ編

  日本機械学会論文集Ａ編 63 (615), 2437-2443, 1997

  一般社団法人 日本機械学会

キーワード

• Material Testing
• Ultrasonic Inspection
• Nondestructive Inspection
• Ceramics
• Porosity

詳細情報

• CRID: 1390282679423557120
• NII論文ID: 110002374336
• NII書誌ID: AN0018742X
• DOI: 10.1299/kikaia.63.2437
• ISSN: 18848338
• ISSN: 03875008
• NDL書誌ID: 4342677
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4342677
• Web Site: http://www.jstage.jst.go.jp/article/kikaia1979/63/615/63_615_2437/_pdf
• 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