Refine your search:     
Report No.
 - 
Search Results: Records 1-15 displayed on this page of 15
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

X-ray magnetic circular dichroism study of iron-intercalated transition-metal dichalcogenide Fe$$_x$$TaS$$_2$$ with perpendicular magnetic anisotropy; Comparison with Fe$$_x$$TiS$$_2$$

Shibata, Goro; Won, C.*; Kim, J.*; Nonaka, Yosuke*; Ikeda, Keisuke*; Wan, Y.*; Suzuki, Masahiro*; Koide, Tsuneharu*; Tanaka, Arata*; Cheong, S.-W.*; et al.

Photon Factory Activity Report 2022 (Internet), 2 Pages, 2023/00

no abstracts in English

Journal Articles

Sodium-cooled Fast Reactors

Ohshima, Hiroyuki; Morishita, Masaki*; Aizawa, Kosuke; Ando, Masanori; Ashida, Takashi; Chikazawa, Yoshitaka; Doda, Norihiro; Enuma, Yasuhiro; Ezure, Toshiki; Fukano, Yoshitaka; et al.

Sodium-cooled Fast Reactors; JSME Series in Thermal and Nuclear Power Generation, Vol.3, 631 Pages, 2022/07

This book is a collection of the past experience of design, construction, and operation of two reactors, the latest knowledge and technology for SFR designs, and the future prospects of SFR development in Japan. It is intended to provide the perspective and the relevant knowledge to enable readers to become more familiar with SFR technology.

Journal Articles

Effects of residual stress on hydrogen embrittlement of a stretch-formed tempered martensitic steel sheet

Nishimura, Hayato*; Hojo, Tomohiko*; Ajita, Saya*; Shibayama, Yuki*; Koyama, Motomichi*; Saito, Hiroyuki*; Shiro, Ayumi*; Yasuda, Ryo*; Shobu, Takahisa; Akiyama, Eiji*

Tetsu To Hagane, 107(9), p.760 - 768, 2021/09

 Times Cited Count:0 Percentile:0(Metallurgy & Metallurgical Engineering)

no abstracts in English

Journal Articles

Effects of stress and plastic strain on hydrogen embrittlement fracture of a U-bent martensitic steel sheet

Shibayama, Yuki; Hojo, Tomohiko*; Koyama, Motomichi*; Saito, Hiroyuki*; Shiro, Ayumi*; Yasuda, Ryo*; Shobu, Takahisa; Matsuno, Takashi*; Akiyama, Eiji*

ISIJ International, 61(4), p.1322 - 1329, 2021/04

 Times Cited Count:3 Percentile:28.17(Metallurgy & Metallurgical Engineering)

Journal Articles

Effects of residual stress on hydrogen embrittlement of a stretch-formed tempered martensitic steel sheet

Nishimura, Hayato*; Hojo, Tomohiko*; Ajita, Saya*; Shibayama, Yuki*; Koyama, Motomichi*; Saito, Hiroyuki*; Shiro, Ayumi*; Yasuda, Ryo*; Shobu, Takahisa; Akiyama, Eiji*

ISIJ International, 61(4), p.1170 - 1178, 2021/04

 Times Cited Count:3 Percentile:28.17(Metallurgy & Metallurgical Engineering)

Journal Articles

Effects of residual stress and plastic strain on hydrogen embrittlement of a stretch-formed TRIP-aided martensitic steel sheet

Hojo, Tomohiko*; Akiyama, Eiji*; Saito, Hiroyuki*; Shiro, Ayumi*; Yasuda, Ryo*; Shobu, Takahisa; Kinugasa, Junichiro*; Yuse, Fumio*

Corrosion Science, 177, p.108957_1 - 108957_9, 2020/12

 Times Cited Count:15 Percentile:76.55(Materials Science, Multidisciplinary)

Hydrogen assisted cracking on hemispherically-stretch-formed specimens of transformation induced plasticity-aided martensitic steel was investigated. Hydrogen charging induced cracking around the foot of the impression formed on the steel sheet, and the cracks propagated along the radial direction toward the hillside and the plains. Distributions of stress, plastic strain and volume fraction of retained austenite were analyzed employing the energy-dispersive X-ray diffraction method utilizing the synchrotron X-ray radiation at SPring-8. It was notable that the crack initiation took place in the region where the measured tensile stress was the highest. Influences of plastic strain and resulted martensitic transformation were also suggested.

Journal Articles

Hydrogen embrittlement resistance of pre-strained ultra-high-strength low alloy TRIP-aided steel

Hojo, Tomohiko*; Kumai, B.*; Koyama, Motomichi*; Akiyama, Eiji*; Waki, Hiroyuki*; Saito, Hiroyuki*; Shiro, Ayumi*; Yasuda, Ryo*; Shobu, Takahisa; Nagasawa, Akihiko*

International Journal of Fracture, 224(2), p.253 - 260, 2020/08

 Times Cited Count:13 Percentile:68.95(Materials Science, Multidisciplinary)

In the study, the pre-strain effect on hydrogen embrittlement property of the ultra-high-strength transformation-induced plasticity -aided bainitic ferrite steel was investigated towards application for automobile frame parts. 3-10% tensile pre-strain suppressed hydrogen-induced mechanical degradation relative to total elongation while 12-15% pre-strained specimen did not exhibit elongation after hydrogen charging. The advantageous effect of the 3-10% pre-strain was attributed to the suppression of crack initiation related to retained austenite. The TRIP by pre-straining decreased the volume fraction of retained austenite before hydrogen charging, thereby reducing existing probabilities of preferential crack initiation sites and propagation paths. Conversely, high pre-strain such as 12-15% does not effectively work due to work hardening resulting in increases in hydrogen embrittlement susceptibility and a significant increase in hydrogen content due to the multiplication of dislocations.

Journal Articles

Electric readout of magnetic stripes in insulators

Chen, Y.*; Shiomi, Yuki*; Qiu, Z.*; Niizeki, Tomohiko*; Umeda, Maki*; Saito, Eiji

Scientific Reports (Internet), 9, p.19052_1 - 19052_8, 2019/12

 Times Cited Count:0 Percentile:0(Multidisciplinary Sciences)

Journal Articles

Antiferromagnetic NiO thickness dependent sign of the spin Hall magnetoresistance in $$gamma$$-Fe$$_2$$O$$_3$$/NiO/Pt epitaxial stacks

Dong, B.-W.*; Baldrati, L.*; Schneider, C.*; Niizeki, Tomohiko*; Ramos, R.*; Ross, A.*; Cramer, J.*; Saito, Eiji; Kl$"a$ui, M.*

Applied Physics Letters, 114(10), p.102405_1 - 102405_5, 2019/03

 Times Cited Count:8 Percentile:43.24(Physics, Applied)

Journal Articles

Observation of longitudinal spin-Seebeck effect in cobalt-ferrite epitaxial thin films

Niizeki, Tomohiko*; Kikkawa, Takashi*; Uchida, Kenichi*; Oka, Mineto*; Suzuki, Kazuya*; Yanagihara, Hideo*; Kita, Eiji*; Saito, Eiji

AIP Advances (Internet), 5(5), p.053603_1 - 053603_6, 2015/05

 Times Cited Count:38 Percentile:81.89(Nanoscience & Nanotechnology)

Journal Articles

Rapid and simple measurement of H$$_{2}$$ emission from active faults using compact sampling equipments

Shimada, Koji; Tanaka, Hidemi*; Saito, Tomohiko*

Resource Geology, 58(2), p.196 - 202, 2008/06

 Times Cited Count:2 Percentile:15.99(Geology)

To shorten the duration of higher concentration of hydrogen immediately after a fault-gas-monitoring installation (install effect), a downsized equipment using commercial sensor was arranged. The install effect, which obstacle to genuine gas emission from faults, is finished within 35 minutes after excavation of monitoring holes along the active Atotsugawa fault, central Japan. It shows that types of hydrogen emission can be captured within about 1 hour procedure. Shortening the detection time should enable a quick evaluation of temporal and spatial heterogeneity of hydrogen emission along Quaternary fault implying fault activity.

Journal Articles

Resonant O K$$alpha$$ emission spectroscopy of layered manganate La$$_{1.2}$$Sr$$_{1.8}$$Mn$$_{2}$$O$$_{7}$$

Agui, Akane; K$"a$$"a$mbre, T.*; S${aa}$the, C.*; Nordgren, J.*; Usuda, Manabu; Saito, Tomohiko*; Moritomo, Yutaka*

Journal of Electron Spectroscopy and Related Phenomena, 144-147, p.589 - 592, 2005/06

 Times Cited Count:1 Percentile:5.7(Spectroscopy)

Current research in the perovskite and layered perovskite-type manganese oxides has expanded to include the study of electronic and magnetic properties such as the colossal magnetoresistance (CMR), orbital ordering and charge ordering. The O K$$alpha$$ soft X-ray emission and absorption spectra (XES and XAS) of La$$_{1.2}$$Sr$$_{1.8}$$Mn$$_{2}$$O$$_{7}$$ were measured at selected excitation energies in order to investigate the electronic structure. The measurements were carried out by using a soft X-ray emission spectrometer at beamline BW3 at HASYLAB, Germany. The dependence of O K$$alpha$$ XES on excitation-energy was observed. It is attributed the different site of oxygen ions.

Journal Articles

Resonant Mn $$L$$ Emission spectra of layered manganite La$$_{1.2}$$Sr$$_{1.8}$$Mn$$_{2}$$O$$_{7}$$

Agui, Akane; Butorin, S. M.*; K$"a$$"a$mbre, T.*; S${aa}$the, C.*; Saito, Tomohiko*; Moritomo, Yutaka*; Nordgren, J.*

Journal of the Physical Society of Japan, 74(6), p.1772 - 1776, 2005/06

 Times Cited Count:8 Percentile:48.38(Physics, Multidisciplinary)

no abstracts in English

Oral presentation

The GROund Water Data Analyzing System (GROWDAS) of wide applicability utilizing quadrapole mass spectrometer for monitoring the dissolved gas

Shimada, Koji; Tanaka, Hidemi*; Hirokawa, Tomotaka*; Saito, Tomohiko*; Tsunomori, Fumiaki*

no journal, , 

no abstracts in English

Oral presentation

Development of information systems for understanding environmental monitoring data on the Fukushima Daiichi Nuclear Power Plant accident

Seki, Akiyuki; Suzuki, Kenta*; Akazaki, Tomohiko*; Tamori, Kiyomi; Kitamura, Tomoko; Sugiyama, Noriko; Saito, Kimiaki; Takemiya, Hiroshi

no journal, , 

There has been a growing demand for knowing time series changes in air dose rate and concentration of radioactive materials. Also, from the beginning of the accident, there were a lot of requests for local monitoring information specialized in the area where individuals live or want to know. To respond to those requests, we had improved and developed the information systems using software platform for environmental monitoring data which developed already. Several visualization information that made time series changes easier to understand were added to the Environmental Monitoring Database. Also, we had developed the Environmental Monitoring Infographics which statistically analyzes a large amount of environmental monitoring data and visualizes the change of air dose rate and concentration of radioactive materials. Moreover, we developed the Mapping Tool that can map and graph local environmental monitoring information.

15 (Records 1-15 displayed on this page)
  • 1