Ultrasonic Measurement of Three-Dimensional Structure of Electrical Trees using Characteristics of Tree Structure

• Yoshizawa Masasumi

  Tokyo Metropolitan University

• Watanabe Eiki

  Tokyo Metropolitan University

• Moriya Tadashi

  Tokyo Metropolitan University

Bibliographic Information

Other Title

• トリー構造の特徴を利用した超音波による電気トリーの三次元構造計測
• トリー構造の特徴を利用した超音波による電気トリーの3次元構造計測
• トリー コウゾウ ノ トクチョウ オ リヨウシタ チョウオンパ ニヨル デンキ

Abstract

In this paper we propose a method for discrimination of noise-covered ultrasonic signals by making use of the distinguishing features of signals reflected from electrical trees extending toward the direction of depth within the specimen. That is to say, it utilizes the characteristics of signals due to the spacial continuity of a tree branch and also the change of the delay time of the reflected signal from the electrical tree when the ultrasonic transducer is moved slightly around near the target point over the specimen.<br>As the results, it is shown that the three-dimensional structure of the bush-type tree in polyethylene can be visualized in non-destructive way. The resultant shapes of the trees are agreed well with those obtained by actual sectioning of the specimen using a microtome.

Journal

• IEEJ Transactions on Fundamentals and Materials

  IEEJ Transactions on Fundamentals and Materials 116 (9), 798-803, 1996

  The Institute of Electrical Engineers of Japan

Keywords

• 超音波計測
• 有機絶縁材料
• 電気トリー
• トリー構造特徴利用計測法
• 三次元構造
• 可視化

Details

• CRID: 1390001204599560704
• NII Article ID: 130006839313
• NII Article ID: 10002820250
• NII Book ID: AN10136312
• DOI: 10.1541/ieejfms1990.116.9_798
• ISSN: 13475533
• ISSN: 03854205
• ISSN: http://id.crossref.org/issn/03854205
• NDL BIB ID: 4020540
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4020540
• Web Site: https://www.jstage.jst.go.jp/article/ieejfms1990/116/9/116_9_798/_pdf
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed