Journal of High Pressure Institute of Japan
Online ISSN : 1347-9598
Print ISSN : 0387-0154
ISSN-L : 0387-0154
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Volume 30, Issue 6
Displaying 1-7 of 7 articles from this issue
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  • Unified Inelastic Constitutive Equation Considering Process of Mechanical Activation
    Toshiya NAKAMURA, Yasuhide ASADA
    1992 Volume 30 Issue 6 Pages 294-300
    Published: November 25, 1992
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.30.294
    JOURNAL FREE ACCESS
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    A unified inelastic constitutive equation is proposed to describe high temperature inelastic deformation. In the present model, the mechanical activation process is tried to be introduced which leads the time-independ contribution in the formulation of the inelastic strain rate. A mathematical model is developed for 2 1/4 Cr-1 Mo steel at 550°C based on experimental data analyses and it is shown that the present model reproduces the high temperature inelastic deformation of the material very precisely.
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  • Development of High Pressure Apparatus for Neutron Scattering
    Akifumi ONODERA
    1992 Volume 30 Issue 6 Pages 301-310
    Published: November 25, 1992
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.30.301
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    A high pressure cell has been developed that permits neutron scattering experiments at pressures to 3 GPa and at temperatures between 10 and 400 K. The design and construction of the cell along with pressure calibration are shown. Applications to both elastic and inelastic neutron scattering studies are described.
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  • Development of Integral Type Forgings for Steam Generator of Nuclear Power Plant
    Komei SUZUKI, Ikuo SATO, Etsuo MURAI
    1992 Volume 30 Issue 6 Pages 311-321
    Published: November 25, 1992
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.30.311
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    The use of integral type steel forgings for the construction of pressure vessel enhances the structural integrity of components and makes the fabrication of components and the execution of in-service inspection (ISI) easier than those fabrication from plate and casting materials. Such steel forgings have been realized for steam generator (SG) for nuclear power plant as follows: (1) Forged shell ring change from welding fabrication of formed plates to forging; (2) Forged conical shell ring: ditto; (3) Forged head integral with nozzles (s): (i) Primary head: change from casting to forging; (ii) Secondary head: change from welding fabrication of formed plates to forging. These steel forgings have been realized by recent development in manufacturing technologies, such as steel making, forging processes and heat treatment which are vital to the quality of steel forgings. Some examples of recent typical high quality steel forgings developed by the Japan Steel Works, Ltd. (JSW) are introduced, and the main points of the manufacturing technique and the quality attained are also described.
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  • Developments of the Device for the Generations of Ultra-High Pressures and Temperatures
    Motohiro TOGAYA
    1992 Volume 30 Issue 6 Pages 322-334
    Published: November 25, 1992
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.30.322
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    The generated pressure in a conventional high pressure apparatus have been limited by the yield or fracture strength of anvil materials, such as tungstencarbide (WC) and diamond. The limitation of static high presure generation was analysed and discussed on the basis of elasticity and plasticity. In order to exceed such a limit, an anvil device due to multi-body contact (MBC) method was developed and its availability was confirmed by experiments using 8 improved anvils of WC in a 6-8 anvil type high pressure apparatus.
    Ultar-high temperatures under static high pressures in a 6-8 anvil apparatus were generated by using flash heating by discharging of a bank of electrolytic capacitors.
    In order to monitor the temperature by two colour pyrometry, a high pressure cell with optical path and 8 anvil with a small hole through an optical fibre were used. The melting behaviors of graphite were investigated from the profiles of temperature and resistance changes of glaphite by flash-heating.
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  • Progress in the Very High Hydrogen Pressure Techniques
    S. M. FILIPEK, Akira B. SAWAOKA
    1992 Volume 30 Issue 6 Pages 335-341
    Published: November 25, 1992
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.30.335
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    The high pressure techniques for hydrogen compression and for chemical reactions carried out under the high-density H2-gas (or D2-gas) atmosphere are briefly described. Designs of typical apparatuses are schematically presented. Results of several experiments performed under high hydrogen pressure, mostly on metal hydrogen systems, are also given.
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  • [title in Japanese]
    [in Japanese]
    1992 Volume 30 Issue 6 Pages 342-344
    Published: November 25, 1992
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.30.342
    JOURNAL FREE ACCESS
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  • Variety and Activities of Research Committee of HPI in 1991
    [in Japanese]
    1992 Volume 30 Issue 6 Pages 345-356
    Published: November 25, 1992
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.30.345
    JOURNAL FREE ACCESS
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