Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Po-Hsien Tung"'
Autor:
Po-Hsien Tung, 董博賢
97
Anti-symmetric flexural (ASF) modes are anti-symmetric type of guided waves propagating along the tip of wedge-shaped waveguides. This paper describes a combined finite element method (FEM) and laser ultrasound technique (LUT) on the dispersi
Anti-symmetric flexural (ASF) modes are anti-symmetric type of guided waves propagating along the tip of wedge-shaped waveguides. This paper describes a combined finite element method (FEM) and laser ultrasound technique (LUT) on the dispersi
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/22g24u
Autor:
Po-Hsien Tung, 董博賢
104
The study is aimd to develop a new pattern acoustic delay-line sensor based on 1D propagation, large motion amplitude at tip, non-dispersive behavior without truncation and low energy attenuation. The advantages of wedge delay-line sensor(WX
The study is aimd to develop a new pattern acoustic delay-line sensor based on 1D propagation, large motion amplitude at tip, non-dispersive behavior without truncation and low energy attenuation. The advantages of wedge delay-line sensor(WX
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/vcnx7z
Publikováno v:
Physics Procedia. 70:199-203
The acoustic delay line is usually used to supply protection from dangerous environment, to enhance signal intensity by fit geometry of analyte, or to achieve specific angle/focusing by Snell's law, but rarely to avoid noise from coupling agent and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::209a8a1faa72c42cd6d7047efdb221da
https://doi.org/10.1016/j.phpro.2015.08.122
https://doi.org/10.1016/j.phpro.2015.08.122
Autor:
Po-Hsien Tung, Che-Hua Yang
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 60:771-776
Antisymmetric flexural (ASF) modes are guided acoustic modes propagating along the apex line of a wedge with particle motion that is antisymmetric about the midplane bisecting the apex angle. This paper describes experimental observations in applying
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c833bf55e365cd143c930bdb33c68a81
https://doi.org/10.1109/tuffc.2013.2625
https://doi.org/10.1109/tuffc.2013.2625
Autor:
Po-Hsien Tung, Che-Hua Yang
Publikováno v:
2013 IEEE International Ultrasonics Symposium (IUS).
Wedge waves are guided acoustic waves propagating along the tip of a wedge. Wedge waves has large motion amplitude and low energy attenuation when tip with small truncation. The difficulty of traditional probe measurement is hard to avoid noise from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e25b23eef92241eb22bb82f99c5ede6
https://doi.org/10.1109/ultsym.2013.0418
https://doi.org/10.1109/ultsym.2013.0418
Autor:
Che-Hua Yang, Po-Hsien Tung
Publikováno v:
2011 IEEE International Ultrasonics Symposium.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17d453766439790e3d3cc9cb713dd3b1
https://doi.org/10.1109/ultsym.2011.0296
https://doi.org/10.1109/ultsym.2011.0296
Autor:
Che-Hua Yang, Po-Hsien Tung
Publikováno v:
SPIE Proceedings.
Anti-symmetric flexural (ASF) modes are anti-symmetric type of guided waves propagating along the tip of wedge-shaped waveguides. While the wedge tips are coated a thin layer of hydroscopic film, the velocity of ASF mode is sensitive the moisture thr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae9be417227c2d214ad0d1c4b2cf6971
https://doi.org/10.1117/12.881141
https://doi.org/10.1117/12.881141
Autor:
Po-Hsien Tung, Yang, Che-Hua
Publikováno v:
2011 IEEE International Ultrasonics Symposium; 1/ 1/2011, p1203-1205, 3p