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JAEA Reports

None

Yamanaka, Shinsuke*; Uno, Masayoshi*; Kurosaki, Ken*; ; Namekawa, Takashi

JNC-TY9400 2000-011, 41 Pages, 2000/03

JNC-TY9400-2000-011.pdf:1.28MB

no abstracts in English

JAEA Reports

None

Yamanaka, Shinsuke*; Abe, Kazuyuki

JNC-TY9400 2000-004, 78 Pages, 2000/03

JNC-TY9400-2000-004.pdf:2.39MB

no abstracts in English

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

None

*

JNC-TJ7400 2000-013, 26 Pages, 2000/02

JNC-TJ7400-2000-013.pdf:1.25MB

no abstracts in English

JAEA Reports

Static mechanical properties of buffer material

; Suzuki, Hideaki*

JNC-TN8400 99-041, 76 Pages, 1999/11

JNC-TN8400-99-041.pdf:4.49MB

The buffer material is expected to maintain its low water permeability, self-sealing properties, radionuclides adsorption and retardation properties, thermal conductivity, chemical buffering properties, overpack supporting properties, stress buffering properties, etc. over a long period of time. Natural clay is mentioned as a material that can relatively satisfy above. Among the kinds of natural clay, bentonite when compacted is superior because (1)it has exceptionally low water permeability and properties to control the movement of water in buffer, (2)it fills void spaces in the buffer and fractures in the host rock as it swells upon water uptake, (3)it has the ability to exchange cations and to adsorb cationic radioelements. In order to confirm these functions for the purpose of safety assessment, it is necessary to evaluate buffer properties through laboratory tests and engineering-scale tests, and to make assessments based on the ranges in the data obtained. This report describes the procedures, test conditions, results and examinations on the buffer material of unconfined compression tests, one-dimensional consolidation tests, consolidated-undrained triaxial compression tests and consolidated-undrained triaxial creep tests that aim at getting hold of static mechanical properties. We can get hold of the relationship between the dry density and tensile stress etc. by Brazillian tests, between the dry density and unconfined compressive strength etc. by unconfined compression tests, between the consolidation stress and void ratio etc. by one-dimensional consolidation tests, the stress pass of each effective confining pressure etc. by consolidated-undrained triaxial compression tests and the axial strain rate with time of each axial stress etc. by consolidated-undrained triaxial creep tests.

JAEA Reports

The material properties of a rolled steel for welded structure (SM400B)

Aoto, Kazumi; ;

PNC-TN9410 97-037, 51 Pages, 1996/11

PNC-TN9410-97-037.pdf:0.77MB

The basic material properties of a rolled steel for welded structure (present standard name is SM400B, old standard name SM41B) which is used as the liner plate in SHTS cells of "Monju plant". Based on the material testing data for evaluation of structural integity of the liner during sodium leakage are tentatively proposed. Main basic material properties are shown as follows. (1)The 0.2% offset yield stress (lower yield point). (2)The ultimate tensile strength. (3)The modulus of the longitudinal elasticity. (4)Static stress-strain relation. (Physical property in Ludwik equation). (5)The creep strain. (6)The linear thermal expansion coefficient. (7)The density. (8)A specific heat. (9)The thermal conductivity.

Journal Articles

Study on environmental and mechanical properties of irradiated concrete

*; ; Sukegawa, Takenori; Akutsu, Yoichi; *; *

Nippon Kenchiku Gakkai Kozokei Rombunshu, 0(488), p.1 - 10, 1996/10

no abstracts in English

JAEA Reports

None

PNC-TJ1380 96-004, 348 Pages, 1996/01

PNC-TJ1380-96-004.pdf:12.9MB

None

Journal Articles

Improved graphite damage model for predicting property changes of HTGR graphites under isothermal and nonisothermal irradiations

; H.Cords*; H.Nickel*

Journal of Nuclear Science and Technology, 29(9), p.851 - 858, 1992/09

no abstracts in English

Journal Articles

Bending deformation and fracture behavior of unirradiated and irradiated fine-grained isotropic graphite specimens

; ;

Int. Symp. on Carbon New Prossing and New Applications; Extended Abstracts,Vol. l, p.538 - 541, 1990/11

no abstracts in English

Journal Articles

Neutron and $$gamma$$-ray irradiation effects in composite organic insulators

; M.A.Kirk*; R.C.Birtcher*; Hagiwara, Miyuki

Journal of Nuclear Materials, 133-134, p.795 - 799, 1985/00

 Times Cited Count:5 Percentile:39.1(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Thermodynamic functions in dilute Pd-H solid solutions

R.B.McLellan*;

Scr.Metall., 19, p.485 - 488, 1985/00

no abstracts in English

Journal Articles

Neutron irradiation effects on the mechanical properties of organic composite materials

; M.A.Kirk*; R.C.Birtcher*

Journal of Nuclear Materials, 126, p.152 - 159, 1984/00

 Times Cited Count:14 Percentile:19.86(Materials Science, Multidisciplinary)

no abstracts in English

JAEA Reports

Effect of $$gamma$$-ray Irradiation on The Properties of Concrete

; *; ; ; ; ; ; ; *; *; et al.

JAERI-M 83-004, 38 Pages, 1983/02

JAERI-M-83-004.pdf:1.76MB

no abstracts in English

JAEA Reports

None

PNC-TN241 81-25VOL2, 113 Pages, 1981/11

PNC-TN241-81-25VOL2.pdf:8.02MB

JAEA Reports

Thermal Stress Analysis on the Grid - Exit Grid - for JT-60 NBI

; ; Ohara, Yoshihiro;

JAERI-M 9539, 22 Pages, 1981/06

JAERI-M-9539.pdf:0.71MB

no abstracts in English

JAEA Reports

Estimation of Effective Elastic Constants for Grid Plate

; ;

JAERI-M 8923, 8 Pages, 1980/07

JAERI-M-8923.pdf:0.28MB

no abstracts in English

Journal Articles

Ultrasonic measurements of elastic modulus of various structural materials of high temperatures

;

Nippon Kikai Gakkai-Shi, 69(572), p.1146 - 1154, 1966/00

no abstracts in English

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