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Journal Articles

Stress intensity factor interaction of subsurface flaws under notches

Hasegawa, Kunio; Dulieu, P.*; Lacroix, V.*

Proceedings of 2017 ASME Pressure Vessels and Piping Conference (PVP 2017) (CD-ROM), 5 Pages, 2017/07

The stress intensity factors of the subsurface flaws are affected by the stress concentrations caused by the notches. The interaction of stress intensity factor increases with increasing stress concentration factor and decreasing the ligament distance between the tips of the subsurface flaws and the notches for a given notch width. Such subsurface flaws shall be transformed to surface flaws at far distance of the notch tips for conservative evaluations. This paper shows the interactions of stress intensity factors of subsurface flaws under stress concentration fields. Based on the interaction, a flaw-to-surface proximity criterion for a circular flaw is proposed under the stress concentration field induced by a notch.

Journal Articles

Proximity factor on transformation from subsurface to surface flaw

Hasegawa, Kunio*; Li, Y.; Serizawa, Ryosuke*; Kikuchi, Masanori*; Lacroix, V.*

Procedia Materials Science, 12, p.36 - 41, 2016/00

 Times Cited Count:0 Percentile:100

If subsurface flaws are detected that are close to component free surfaces, flaw-to-surface proximity rule is used to determine whether the flaws should be treated as subsurface flaws as is, or transformed to surface flaws. However, specific factors for the proximity rules on transforming subsurface to surface flaws differ among fitness-for-service codes. The objective of the paper is to reveal the proximity factor from the stress intensity factor interaction between the subsurface flaw and the free surface.

Journal Articles

Characterization of preformed plasmas using a multi-dimensional hydrodynamic simulation code in the study of high-intensity laser-plasma interactions

Sagisaka, Akito; Utsumi, Takayuki*; Daido, Hiroyuki; Ogura, Koichi; Orimo, Satoshi; Takai, Mamiko; Hayashi, Yukio; Mori, Michiaki; Yogo, Akifumi; Kado, Masataka; et al.

Journal of Plasma Physics, 72(6), p.1281 - 1284, 2006/12

 Times Cited Count:0 Percentile:100(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Development of a highly coherent X-ray laser

Nishikino, Masaharu; Tanaka, Momoko; Kawazome, Hayato; Kawachi, Tetsuya; Sasaki, Akira; Hasegawa, Noboru; Ochi, Yoshihiro; Kishimoto, Maki; Nagashima, Keisuke; Onishi, Naofumi*

AIP Conference Proceedings 827, p.499 - 504, 2006/04

no abstracts in English

Journal Articles

Mach-Zehnder interference microscopy using a highly coherent X-ray laser

Nishikino, Masaharu; Kawazome, Hayato; Tanaka, Momoko; Kishimoto, Maki; Hasegawa, Noboru; Ochi, Yoshihiro; Kawachi, Tetsuya; Nagashima, Keisuke

IPAP Conference Series 7 (Proceedings of 8th International Conference on X-ray Microscopy (XRM 2005)), p.423 - 425, 2005/00

no abstracts in English

Journal Articles

Development of fast charge exchange recombination spectroscopy by using interference filter method in JT-60U

Kobayashi, Shinji*; Sakasai, Akira; Koide, Yoshihiko; Sakamoto, Yoshiteru; Kamada, Yutaka; Hatae, Takaki; Oyama, Naoyuki; Miura, Yukitoshi

Purazuma, Kaku Yugo Gakkai-Shi, 79(10), p.1043 - 1050, 2003/10

no abstracts in English

Journal Articles

Beam enchancement with a HOPG pre-crystal in the precise neutron optics

Tomimitsu, Hiroshi; Hasegawa, Yuji*; Aizawa, Kazuya

Physics Letters A, 309(3-4), p.183 - 188, 2003/03

 Times Cited Count:0 Percentile:100

no abstracts in English

Journal Articles

Application of CVD diamond window in infrared laser diagnostics for fusion plasmas

Kawano, Yasunori; Chiba, Shinichi; Inoue, Akira*

Proceedings of 30th EPS Conference on Controlled Fusion and Plasma Physics (CD-ROM), 4 Pages, 2003/00

It has been successful to apply CVD diamond plate as the vacuum window for infrared CO$$_{2}$$ laser interferometry and polarimetry for electron density measurement in the JT-60U tokamak. In comparison with using the conventional zinc-selenide windows, the Faraday rotation component at diamond windows was small as negligible. This resulted in the improvement of the Faraday rotation measurement for a tokamak plasma by polarimetry.

Journal Articles

Direct measurement of coherent ultrahigh wakefields excited by intense ultrashort laser pulses in a gas-jet plasma

Kotaki, Hideyuki; Kando, Masaki; Oketa, Takatsugu; Masuda, Shinichi; Koga, J. K.; Kondo, Shuji; Kanazawa, Shuhei; Yokoyama, Takashi*; Matoba, Toru; Nakajima, Kazuhisa

Physics of Plasmas, 9(4), p.1392 - 1400, 2002/04

 Times Cited Count:42 Percentile:18.36(Physics, Fluids & Plasmas)

no abstracts in English

JAEA Reports

Development of control and data processing system for CO$$_{2}$$ laser interferometer

Chiba, Shinichi; Kawano, Yasunori; Tsuchiya, Katsuhiko; Inoue, Akira*

JAERI-Research 2001-050, 59 Pages, 2001/11

JAERI-Research-2001-050.pdf:15.28MB

no abstracts in English

JAEA Reports

Annual report of STACY operation in FY. 2000; Experiments on neutron-interacting systems with two slab-shaped core tanks and 10% enriched uranyl nitrate solution, 2 (Contract research)

Onodera, Seiji; Hirose, Hideyuki; Izawa, Kazuhiko; Tanino, Shuichi; Kaminaga, Jota*; Sakuraba, Koichi; Miyauchi, Masakatsu; Tonoike, Kotaro; Miyoshi, Yoshinori; Yanagisawa, Hiroshi; et al.

JAERI-Tech 2001-057, 54 Pages, 2001/09

JAERI-Tech-2001-057.pdf:4.28MB

no abstracts in English

Journal Articles

Measurement of coherent neutron scattering length with LLL-type interferometry at PNO in JRR-3M

Tomimitsu, Hiroshi; Hasegawa, Yuji*; Aizawa, Kazuya

Journal of the Physical Society of Japan, Vol.70, Supplement A, p.462 - 464, 2001/05

no abstracts in English

Journal Articles

High energy electron acceleration by high peak power laser

Kotaki, Hideyuki; Kando, Masaki; Kondo, Shuji; Masuda, Shinichi; Kanazawa, Shuhei; Yokoyama, Takashi*; Matoba, Toru; Nakajima, Kazuhisa

Proceedings of 13th Symposium on Accelerator Science and Technology, 3 Pages, 2001/00

no abstracts in English

Journal Articles

Laser interaction with neutrons

Tajima, Toshiki; Soyama, Kazuhiko; Koga, J. K.; Takuma, Hiroshi

Journal of the Physical Society of Japan, 69(12), p.3840 - 3846, 2000/12

 Times Cited Count:2 Percentile:72.77(Physics, Multidisciplinary)

no abstracts in English

JAEA Reports

Annual report of STACY operation in FY.1999; Experiments on two unit neutron-interacting system with slab-shaped core tanks and 10% enriched uranyl nitrate solutions, 1 (Contract research)

Onodera, Seiji; Sono, Hiroki; Hirose, Hideyuki; Tanino, Shuichi; Kaminaga, Jota*; Myomae, Tomoki*; Murakami, Kiyonobu; Sakuraba, Koichi; Miyauchi, Masakatsu; Tonoike, Kotaro; et al.

JAERI-Tech 2000-059, 46 Pages, 2000/11

JAERI-Tech-2000-059.pdf:2.86MB

no abstracts in English

Journal Articles

Neutron interferometric measurement of the scattering lengths of W, $$^{63}$$Cu, $$^{65}$$Cu, Cu, $$^{202}$$Hg and Hg

Tomimitsu, Hiroshi; Hasegawa, Yuji*; Aizawa, Kazuya

Physics Letters A, 274(5-6), p.175 - 183, 2000/09

 Times Cited Count:5 Percentile:55.03

no abstracts in English

Journal Articles

Experimental verification of laser photocathode RF gun as an injector for a laser plasma accelerator

Uesaka, Mitsuru*; Kinoshita, Kenichi*; Watanabe, Takahiro*; Sugahara, Jun*; Ueda, Toru*; Yoshii, Koji*; Kobayashi, Tetsuya*; Halz, N.*; Nakajima, Kazuhisa; Sakai, Fumio*; et al.

IEEE Transactions on Plasma Science, 28(4), p.1133 - 1142, 2000/08

 Times Cited Count:10 Percentile:64.04(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Generation, diagnosis and application of femtosecond electron single bunch

Uesaka, Mitsuru*; Watanabe, Takahiro*; Kinoshita, Kenichi*; Sugahara, Jun*; Harano, Hideki*; Ueda, Toru*; Yoshii, Koji*; Nakajima, Kazuhisa; Sakai, Fumio*; Kotaki, Hideyuki; et al.

Nippon Genshiryoku Gakkai-Shi, 42(4), p.310 - 324, 2000/04

 Times Cited Count:0 Percentile:100(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

None

*; *; ; Aoto, Kazumi

JNC-TY9400 2000-010, 138 Pages, 2000/03

JNC-TY9400-2000-010.pdf:5.15MB

None

Journal Articles

Neutron irradiation test of optical components for fusion reactor

Ishitsuka, Etsuo; Sagawa, Hisashi; Nagashima, Akira; Sugie, Tatsuo; Nishitani, Takeo; Yamamoto, Shin; Kawamura, Hiroshi

Effects of Radiation on Materials (ASTM STP 1366), p.1176 - 1185, 2000/00

no abstracts in English

90 (Records 1-20 displayed on this page)