JOPSS - Search Results

Journal Articles

Experimental studies on wave propagation behavior of lattice structures

Miyazaki, Akemi; Kawaguchi, Kenichi*

Nihon Kenchiku Gakkai Kozokei Rombunshu, 597, p.69 - 76, 2005/11

http://ci.nii.ac.jp/naid/110004839833

The objective of our research is to examine the wave propagation properties of framed structures. Those structures tend to become larger and higher recently. On the case of those structures it may be possible that the structure is locally damaged before it becomes vibration state by an external force. It is seemed that for such structures then the investigation and estimation of dynamic structural behaviour from the view point of wave propagation become important. For these purposes, we planned and carried out impact hammer experiments on some lattice-type plates. In this paper the experiment results performed on three lattice-type plates and one continuum plate are shown. The results show that wave propagation properties of lattice-type plates depend on wave propagation properties of the members consist of those lattice-type plates. Preliminary experiments for evaluating the effect of the boundary conditions performed in advance of the experiments for lattice-type plate models are also shown.

Journal Articles

Structural integrity of cross-flow type mercury target

Kogawa, Hiroyuki; Ishikura, Shuichi*; Haga, Katsuhiro; Kinoshita, Hidetaka; Kaminaga, Masanori; Hino, Ryutaro

Proceedings of ICANS-XVI, Volume 3, p.1295 - 1304, 2003/07

no abstracts in English

Journal Articles

Criticality safety benchmark experiment on 10% enriched uranyl nitrate solution using a 28-cm-thickness slab core

Yamamoto, Toshihiro; Miyoshi, Yoshinori; Kikuchi, Tsukasa*; Watanabe, Shoichi

Journal of Nuclear Science and Technology, 39(7), p.789 - 799, 2002/07

https://doi.org/10.3327/jnst.39.789

Times Cited Count：5 Percentile：34.51(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Measurement of absorbed dose distributions in a plastic phantom irradiated by 40- and 65-MeV quasi-monoenergetic neutrons

Nakane, Yoshihiro; Sakamoto, Yukio

Nuclear Instruments and Methods in Physics Research A, 459(3), p.552 - 564, 2001/03

https://doi.org/10.1016/S0168-9002(00)01022-6

Times Cited Count：11 Percentile：61.93(Instruments & Instrumentation)

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

Mesurement of absorbed dose distributions in a plastic phantom irradiated by 40- and 65-MeV quasi-monoenergetic neutrons

Nakane, Yoshihiro; Sakamoto, Yukio; Harada, Yasunori

JAERI-Review 2000-024, TIARA Annual Report 1999, p.262 - 264, 2000/10

https://jopss.jaea.go.jp/pdfdata/JAERI-Review-2000-024.pdf

no abstracts in English

JAEA Reports

Applications of ultrasound technique to flow velocity measurement in water experiment of inter-wrapper flow; Comparison with particle image velocimetry

Kimura, Nobuyuki; ; ; ; Kamide, Hideki; Tokuhiro, Akira; Hishida, Koichi

JNC TN9400 2000-057, 60 Pages, 2000/05

JNC-TN9400-2000-057.pdf:2.11MB

ln experimental study for the thermohydraulics of fast reactor, a simple experiment with fine measurement has been desired for understanding of phenomena and for verification of computer code rather than mockup experiments of large scale. For such purposes quality of experimental data must be improved. ln the velocity measurement, instantaneous velocity profile will have great advances for the understanding of phenomena and for the verification of computer code. ln this report two methods of the velocity profile measurement are discussed; one is ultrasound Doppler velocimetry (UDV) and the other is particle image velocimetry (PIV). These methods were applied to water experiments. The UDV was applied to pipe flow, planer jet, and the inter-wrapper flow which is seen in the gap region between subassemblies of fast reactor core. Cross check with laser Doppler velocimetly showed proper measurement of the UDV. Problems including the application to sodium experiments are also discussed. The PIV was also applied to the inter-wrapper flow. For the application to complex flow geometry, noise reduction method was developed to improve the measurement accuracy.

JAEA Reports

Analysis of weld residual stresses by FINAS (1)

JNC TN9400 2000-047, 114 Pages, 2000/03

JNC-TN9400-2000-047.pdf:8.25MB

Prediction of weld residual stresses by a general finite element code is beneficial to the improvement of the accuracy of integrity assessment and residual life assessment of FBR plants. This reports develops an evaluation method of weld residual stresses using FINAS. Firstly, we suggested a basic procedure derived from parametric analyses with a simple weld joint model. The procedure can be summarized as follows: (1)For heat conduction analysis, prepare different models corresponding to the number of layers to be modeled. Hand over the analytical results to the following model. (2)Use multi-linear stress-strain curves for modeling the stress-strain response of base metal and weld metal. Use the isotropic hardening rule. (3)When metals are melt, use a user-subroutine to keep stresses from arising. (4)Put the thermal expansion coefficient as zero when heat is being input. Then, using the above procedure and TIG welding, we predicted the weld residual stresses of plate and tube. The results agreed well with the other reports, showing the suggested procedure was reasonable.

JAEA Reports

Study on dose distributions in a slab phantom irradiated by several tens MeV neutrons

Nakane, Yoshihiro

JAERI-Research 2000-003, p.110 - 0, 2000/02

JAERI-Research-2000-003.pdf:5.55MB

no abstracts in English

JAEA Reports

Annual report of STACY operation in F.Y. 1998, 1; 280mm thickness slab core10% enriched uranyl nitrate solution (Contract research)

Onodera, Seiji; Sono, Hiroki; Hirose, Hideyuki; Tanino, Shuichi; Nagasawa, Makoto*; Murakami, Kiyonobu; Sakuraba, Koichi; Miyauchi, Masakatsu; Kikuchi, Tsukasa; Ono, Akio

JAERI-Tech 99-084, p.54 - 0, 1999/12

JAERI-Tech-99-084.pdf:2.7MB

no abstracts in English

JAEA Reports