Mechanical and thermal properties of (U,Pu)O

Hirooka, Shun; Kato, Masato

Proceedings of International Conference on Fast Reactors and Related Fuel Cycles; Next Generation Nuclear Systems for Sustainable Development (FR-17) (USB Flash Drive), 6 Pages, 2017/06

Young's modulus of MOX pellets was evaluated by measuring the sound velocities of longitudinal and transverse waves in the pellets as functions of porosity, oxygen-to-metal ratio (O/M) and plutonium content. The results showed that porosity was the most important factor that 20% of the porosity decreased Young's modulus by neatly 100 GPa while O/M and plutonium content could change the Young's modulus by ~20 GPa. From the measured sound velocities, temperature dependence on Young's modulus and specific heat capacity were calculated on the Debye model by leveraging the thermal expansion data. The temperature dependence that Young's modulus decreases with increasing temperature is in good agreement with literature data. The specific heat capacity also agrees with that of calculated value by Kopp's method, taken the Schottky term and the excited term into account.

Nondestructive evaluation method on mechanical property change of graphite components in the HTGR by ultrasonic wave propagation with grain/pore microstructure

Shibata, Taiju; Ishihara, Masahiro

Transactions of 17th International Conference on Structural Mechanics in Reactor Technology (SMiRT-17) (CD-ROM), 8 Pages, 2003/08

no abstracts in English

Effects of superplastic deformation on dynamic hardness and young's modulus of 3Y-TZP

Shibata, Taiju; Ishihara, Masahiro; Takahashi, Tsuneo*; Motohashi, Yoshinobu*

Proceedings of Asian Pacific Conference on Fracture and Strength '01(APCFS '01) and International Conference on Advanced Technology in Experimental Mechanics '01 (ATEM '01), p.894 - 898, 2001/00

no abstracts in English

Understanding of mechanical properties of graphite on the basis of mesoscopic microstructure (Review)

Ishihara, Masahiro; Shibata, Taiju; Takahashi, Tsuneo*; Baba, Shinichi; Hoshiya, Taiji

Proceedings of OECD/NEA 2nd Information Exchange Meeting on Basic Studies in the Field of High-temperature Engineering, p.225 - 241, 2001/00

no abstracts in English

Development of carbon/carbon composite control rod for HTTR, 2; Concept, specifications and mechanical test of materials

Eto, Motokuni; Ishiyama, Shintaro; Fukaya, Kiyoshi; Saito, Tamotsu; Ishihara, Masahiro; Hanawa, Satoshi

JAERI-Research 98-003, 34 Pages, 1998/01

JAERI-Research-98-003.pdf:1.26MB

no abstracts in English

Effect of oxidation in air on the fatigue strength of fine-grained isotropic graphite for HTGR

; ;

Nihon Genshiryoku Gakkai-Shi, 29(7), p.651 - 655, 1987/07

https://doi.org/10.3327/jaesj.29.651

no abstracts in English

The effect of pro-stressing and annealing on the Young's modulus of some nuclear graphites

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Journal of Nuclear Materials, 46(3), p.315 - 323, 1973/03

https://doi.org/10.1016/0022-3115(73)90047-0

no abstracts in English