English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 63190/95884 (66%)
造訪人次 : 4665753      線上人數 : 453
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/45739


    題名: Laser phased array generated ultrasound for nondestructive evaluation of ceramic materials
    作者: 楊智旭;Yang, Jr-Syu;Sanderson, T.;Ume, C.;Jarzynski, J.
    貢獻者: 淡江大學機械與機電工程學系
    關鍵詞: Laser ultrasonics;phased optical fiber array;beamsteering;directivity patterns
    日期: 1997-03
    上傳時間: 2010-03-26 19:50:52 (UTC+8)
    出版者: Springer
    摘要: This paper describes the experimental application of a phased optical fiber array to transmit pulsed laser light to the free surface of Carborundum CS-3 ceramic samples for ultrasonic nondestructive evaluation (NDE). The pulsed laser beams heat the surface of the ceramic rapidly, and can thermoelastically generate longitudinal, shear, and surface (Rayleigh) waves. Without the optical fiber array all three wave modes are generated simultaneously, and no control over directivity or beam-width is possible. The experimental results presented here indicate that the wave modes, beam-width, and directivity of the generated ultrasound can be controlled by using the phased optical fiber array. Experimental directivity patterns for the laser phased array are compared to a simple theoretical model based on Rose’s point source theory. The model predicts shear wave directivities better than either longitudinal or surface waves. This work demonstrates some of the capabilities and limitations of using laser-phased arrays on ceramics.
    關聯: Journal of nondestructive evaluation 16(1), pp.1-9
    DOI: 10.1007/BF03325380
    顯示於類別:[機械與機電工程學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    index.html0KbHTML18檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

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