English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 63184/95884 (66%)
造访人次 : 4547915      在线人数 : 264
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻

    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/45746

    题名: Non-contact optical fibre phased array generation of ultrasound for non-destructive evaluation of materials and processes
    作者: 楊智旭;Yang, J.;DeRidder, N.;Ume, C.;Jarzynski, J.
    贡献者: 淡江大學機械與機電工程學系
    日期: 1993-11-01
    上传时间: 2010-03-26 19:51:22 (UTC+8)
    出版者: Elsevier
    摘要: The use of non-contact laser techniques for the generation of ultrasound has extended the limits of the application of traditional ultrasonic techniques. This paper focusses on the use of one such non-contact laser technique, known as ‘optical fibre array’, to generate shear and surface waves. The shear wave experimental directivity pattern results are presented and compared with the theoretical results of a single source and an array source. The experimental directivity results for the surface wave are also presented, and compared with the theoretical results. The data show that the array enhances signal generation in the forward direction for both shear and surface waves. The array gain is also discussed. The receiver for the directivity measurements was a contact piezoelectric transducer.
    關聯: Ultrasonics 31(6), pp.387-394
    DOI: 10.1016/0041-624X(93)90046-3
    显示于类别:[機械與機電工程學系暨研究所] 期刊論文


    档案 大小格式浏览次数



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈