Laser phased array generated ultrasound for nondestructive evaluation of ceramic materials

doi:10.1007/BF03325380

淡江大學機構典藏 > 工學院 > 機械與機電工程學系暨研究所 > 期刊論文 > Item 987654321/45739

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.html	0Kb	HTML	72	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

資料載入中.....