Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Namkyoung Choi"'
Publikováno v:
Applied Sciences, Vol 12, Iss 13, p 6502 (2022)
Liquefied hydrogen storage vessels (LHSVs) are vulnerable to surface-crack initiation, propagation, and fracture on their surfaces because they are under high-pressure, low-temperature conditions. Defects can also occur in the coatings of the storage
Externí odkaz:
https://doaj.org/article/5fb271bbd124431e846cb854d8dec82f
Publikováno v:
Sensors, Vol 19, Iss 12, p 2662 (2019)
In this study, a high-sensitivity Pb( Mg 1 / 3 Nb 2 / 3 ) O 3 - PbTiO 3 (PMN-PT)-based ultrasonic transducer was developed for detecting defective pressurized water reactor (PWR) fuel rods. To apply the PMN-PT substance to nuclear power plant facilit
Externí odkaz:
https://doaj.org/article/adef04f214194fc78da88b83f9edff51
Autor:
Namkyoung Choi, Young-In Hwang, Hyosung Lee, Mu-Kyung Seo, Yong-Il Kim, Geonwoo Kim, Ki-Bok Kim
Publikováno v:
Sensors and Actuators A: Physical. 347:113936
Publikováno v:
International Journal of Precision Engineering and Manufacturing. 20:1007-1015
Glass fiber reinforced plastics (GFRP) have been widely used for wind turbine blades because of the relative ease of manufacturing them into complex shapes, and their excellent fatigue and corrosion resistance. Acoustic emission (AE) testing has beco
Publikováno v:
International Journal of Precision Engineering and Manufacturing. 20:383-393
KLM model has been widely used for designing PZT based ultrasonic transducers by using an ultrasonic pulse-echo method in the field of non-destructive testing. In this study, to apply the KLM model for an ultrasonic through-transmission method, trans
Publikováno v:
JOURNAL OF THE KOREAN SOCIETY FOR NONDESTRUCTIVE TESTING. 37:411-417
Publikováno v:
JOURNAL OF THE KOREAN SOCIETY FOR NONDESTRUCTIVE TESTING. 37:418-425
Characterization of RF sputtered zinc oxide thin films on silicon using scanning acoustic microscopy
Publikováno v:
Journal of Electroceramics. 40:79-87
Zinc oxide (ZnO) thin films were grown on silicon (100) substrate using radio frequency (RF) sputtering under various processing parameters including deposition time and annealing temperature. A series of characterization techniques including X-ray d
Publikováno v:
Sensors, Vol 19, Iss 12, p 2662 (2019)
Sensors (Basel, Switzerland)
Sensors (Basel, Switzerland)
In this study, a high-sensitivity Pb( Mg 1 / 3 Nb 2 / 3 ) O 3 - PbTiO 3 (PMN-PT)-based ultrasonic transducer was developed for detecting defective pressurized water reactor (PWR) fuel rods. To apply the PMN-PT substance to nuclear power plant facilit
Publikováno v:
Journal of Nanoscience and Nanotechnology. 15:8414-8417
The effect of neutron irradiation on the electrical and piezoelectric properties of a PMN-PT [(Pb(Mg(1/3)Nb(2/3))O3-PbTiO3)] single crystal such as permittivity, electrical impedance and piezoelectric constant d33 has been investigated at 1 kHz. The