Zobrazeno 1 - 10
of 230
pro vyhledávání: '"Yoji Okabe"'
Autor:
Shoichi Kato, Osami Misumi, Shinichiro Maruyama, Hisayoshi Nozaki, Yayoi Tsujimoto-Inui, Mari Takusagawa, Shigekatsu Suzuki, Keiko Kuwata, Saki Noda, Nanami Ito, Yoji Okabe, Takuya Sakamoto, Fumi Yagisawa, Tomoko M. Matsunaga, Yoshikatsu Matsubayashi, Haruyo Yamaguchi, Masanobu Kawachi, Haruko Kuroiwa, Tsuneyoshi Kuroiwa, Sachihiro Matsunaga
Publikováno v:
Communications Biology, Vol 6, Iss 1, Pp 1-13 (2023)
Multi-omic and evolutionary analyses of the ultrasmall green algae, Medakomo hakoo, suggest that it might belong to a new genus within the class Trebouxiophyceae and provide further insight into the essential genes for microalgae.
Externí odkaz:
https://doaj.org/article/39a473c255fd445f8631ac7f10aaa750
Publikováno v:
Results in Physics, Vol 31, Iss , Pp 104927- (2021)
Laser-ultrasonic waves are used in nondestructive inspections because they can be excited on arbitrarily shaped surfaces by irradiation of a pulsed laser from a distance. During the non-contact scanning of a laser, the waveform of excited ultrasonic
Externí odkaz:
https://doaj.org/article/2ed1f670a44d4071a76b11435e1d85cb
Publikováno v:
Sensors, Vol 22, Iss 3, p 789 (2022)
When impact damage occurs in carbon fiber-reinforced plastic (CFRP) structures, it is barely visible but may cause significant degradation in the mechanical properties of the structure. Hence, a structural health monitoring (SHM) system that can be i
Externí odkaz:
https://doaj.org/article/e04770ac79f94bf8af01c6618f9d1f42
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
Abstract To investigate the characteristics of compression, buffering and energy dissipation in beetle elytron plates (BEPs), compression experiments were performed on BEPs and honeycomb plates (HPs) with the same wall thickness in different core str
Externí odkaz:
https://doaj.org/article/8e6dd3e218f04f29adf3b3e611b84240
Autor:
Fengming YU, Yoji OKABE
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 84, Iss 857, Pp 17-00406-17-00406 (2017)
Because of the stable material property of optical fiber up to 1000℃, fiber-optic Bragg grating (FBG) sensor is considered as one of possible ultrasonic sensors used at ultrahigh temperature. However, disappearance of reflectivity of a normal FBG i
Externí odkaz:
https://doaj.org/article/333ef20b70b64b5ea7636c9daf3b484c
Autor:
Rencheng Zheng, Kimihiko Nakano, Rui Ohashi, Yoji Okabe, Mamoru Shimazaki, Hiroki Nakamura, Qi Wu
Publikováno v:
Sensors, Vol 15, Iss 7, Pp 16388-16411 (2015)
Ultrasonic wave-sensing technology has been applied for the health monitoring of composite structures, using normal fiber Bragg grating (FBG) sensors with a high-speed wavelength interrogation system of arrayed waveguide grating (AWG) filters; howeve
Externí odkaz:
https://doaj.org/article/ef53d480a7f84277a9b7e8e64ef04f09
Publikováno v:
Sensors, Vol 14, Iss 1, Pp 1094-1105 (2014)
In this research, the sensitivity distribution properties of a phase-shifted fiber Bragg grating (PS-FBG) to ultrasonic waves were investigated employing the surface attachment method. A careful consideration was taken and examined by experimental re
Externí odkaz:
https://doaj.org/article/78b2ef30fa2147f99fd28d05c27da852
Publikováno v:
Sensors, Vol 18, Iss 10, p 3395 (2018)
The fiber Bragg grating (FBG) sensor, which was developed over recent decades, has been widely used to measure manifold static measurands in a variety of industrial sectors. Multiple experiments have demonstrated its ability in ultrasonic detection a
Externí odkaz:
https://doaj.org/article/1d9864470cc94c11b0753d07260bd598
Autor:
Fengming Yu, Yoji Okabe
Publikováno v:
Sensors, Vol 17, Iss 12, p 2908 (2017)
Recently, the authors have proposed a remote acoustic emission (AE) measurement configuration using a sensitive fiber-optic Bragg grating (FBG) sensor. In the configuration, the FBG sensor was remotely bonded on a plate, and an optical fiber was used
Externí odkaz:
https://doaj.org/article/8b51efdf8f24474ba1f09f90c5da88ed
Publikováno v:
Journal of Sandwich Structures & Materials. 25:501-517
Detecting disbonds in honeycomb sandwich structures using ultrasonics is challenging due to the complex wave propagation. This paper investigates the method for disbond quantification in honeycomb sandwich structures using laser ultrasonics. In the e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::862cceadcfd602363835a159ee6f35c3
https://doi.org/10.1177/10996362231159185
https://doi.org/10.1177/10996362231159185