Zobrazeno 1 - 10
of 983
pro vyhledávání: '"laser ultrasound"'
Publikováno v:
Photoacoustics, Vol 40, Iss , Pp 100654- (2024)
Many production processes involve curved sample surfaces, such as welding or additive manufacturing. These pose new challenges to characterization methods for quality inspection, which are usually optimized for flat extended sample geometries. In thi
Externí odkaz:
https://doaj.org/article/51ea436c07fa451fa05395bd4d7aa5b0
Publikováno v:
Photonics, Vol 11, Iss 10, p 920 (2024)
Rail surface cracks are widespread damage that can lead to uneven surfaces of railheads and affect traveling safety. Non-destructive testing is needed to inspect rails regularly to ensure the normal operation of railroads. This paper proposes a laser
Externí odkaz:
https://doaj.org/article/2fee19ef9c1840e98e0ad38475dafb1d
Autor:
Daniil Nozdriukhin, Sandeep Kumar Kalva, Cagla Özsoy, Michael Reiss, Weiye Li, Daniel Razansky, Xosé Luís Deán‐Ben
Publikováno v:
Advanced Science, Vol 11, Iss 9, Pp n/a-n/a (2024)
Abstract Major biological discoveries are made by interrogating living organisms with light. However, the limited penetration of un‐scattered photons within biological tissues limits the depth range covered by optical methods. Deep‐tissue imaging
Externí odkaz:
https://doaj.org/article/a337d59acc01447db371336a591ea7df
Autor:
Lee Shi Yn, Fairuz Izzuddin Romli, Norkhairunnisa Mazlan, Jung-Ryul Lee, Mohammad Yazdi Harmin, Chia Chen Ciang
Publikováno v:
Aerospace, Vol 11, Iss 7, p 524 (2024)
Guided ultrasonic wavefield propagation imaging (GUPI) is useful for visualizing hidden flaws in aerospace thin-walled structures, but the need for subjective signal processing involving three-dimensional Fourier transformation to increase the visibi
Externí odkaz:
https://doaj.org/article/5c704f4b803049baa285c498fe5f5590
Autor:
Jinfeng Wu, Shuxian Yuan, Xiaogang Wang, Huaidong Chen, Fei Huang, Chang Yu, Yeqing He, Anmin Yin
Publikováno v:
Crystals, Vol 14, Iss 7, p 607 (2024)
The traditional microstructure detecting methods such as metallography and electron backscatter diffraction are destructive to the sample and time-consuming and they cannot meet the needs of rapid online inspection. In this paper, a random forest reg
Externí odkaz:
https://doaj.org/article/717260e8ccb74170b850f62d0c82c667
Autor:
Felix Brand, Klaus Stefan Drese
Publikováno v:
Sensors, Vol 24, Iss 5, p 1630 (2024)
Optoacoustics is a metrology widely used for material characterisation. In this study, a measurement setup for the selective determination of the frequency-resolved phase velocities and attenuations of longitudinal waves over a wide frequency range (
Externí odkaz:
https://doaj.org/article/88c07f5bf2114feab9ff4e0608a9fc77
Publikováno v:
Photoacoustics, Vol 31, Iss , Pp 100490- (2023)
Based on a synthesized laser ultrasonic array, full matrix capture can be used to acquire data, which can then be post-processed using the total focusing method. However, this noncontact ultrasonic imaging technique has not been widely used because o
Externí odkaz:
https://doaj.org/article/e3a88c197f924512a0637c467ce8a4d1
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