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pro vyhledávání: '"Chia-Fu Wang"'
Publikováno v:
Sensors, Vol 22, Iss 21, p 8426 (2022)
This paper demonstrates that a graded-index (GRIN) phononic lens, combined with a channel waveguide, can focus anti-symmetric Lamb waves for extraction by a detector with strong directional sensitivity. Guided ultrasonic wave inspection is commonly a
Externí odkaz:
https://doaj.org/article/9a1314a5f708487e92a0a14e80976ee2
Autor:
Chia-Fu Wang, 王家福
99
The real estate industry can be described as the railway engine of all market industries. From the demand for raw materials, to the relevant coordinating industries up and down the supply chain, coupled with the derivative financial products,
The real estate industry can be described as the railway engine of all market industries. From the demand for raw materials, to the relevant coordinating industries up and down the supply chain, coupled with the derivative financial products,
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/27048801013505528041
Publikováno v:
Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems. 5
Fiber Bragg grating (FBG) sensors are often applied as Lamb wave detectors for structural health monitoring (SHM) systems. Analyzing the measured signal for the identification of structural damage requires a high signal-to-noise ratio (SNR) because o
Publikováno v:
Optical Fiber Sensors Conference 2020 Special Edition.
We amplify the signal coupled from ultrasonic Lamb waves into an optical fiber, for structural damage detection applications, using two devices: an ultrasonic horn and a phononic crystal GRIN lens.
Publikováno v:
Volume 13: Vibration, Acoustics and Wave Propagation.
The present study proposes a wideband two-dimensional Luneburg lens using graded phononic crystals (GPCs). We present a method to broaden the range of operation frequency of the Luneburg lens based on GPCs. The GPCs is composed of circular cylindrica