Journal of High Pressure Institute of Japan
Online ISSN : 1347-9598
Print ISSN : 0387-0154
ISSN-L : 0387-0154
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Volume 33, Issue 1
Displaying 1-6 of 6 articles from this issue
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
    1995 Volume 33 Issue 1 Pages 4-15
    Published: January 25, 1995
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.33.4
    JOURNAL FREE ACCESS
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  • A Unified Model for Scatter of Fracture Toughness in Cleavage of Steels
    Hiroshi MIMURA, Jian MEI
    1995 Volume 33 Issue 1 Pages 16-24
    Published: January 25, 1995
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.33.16
    JOURNAL FREE ACCESS
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    A unified model is proposed to explain the feature of scatter of fracture toughness in cleavage of steels, by taking account of such factors as decrease in the ratio of K1c/K1a with temperature, increase in micro-crack density with plastic strain and possible change of the stress and strain condition around crack tip by initiation of the preceding ductile crack.
    This model gives the prediction as stated in the following items which are consistent with the facts in the literature.
    (1) In the lower shelf region, fracture toughness has the property of the averaged quantity rather than the extreme value.
    (2) In the transition region, the cleavage initiation sites should be found even in the region quite close to crack tip such as the area between the crack tip and the stress maximum site.
    (3) The weibull slope decreases abruptly from 4 to 2 when the preceding ductile crack starts to grow, and increases to high value when (K1c/σy)2/2π becomes far larger than notch ligament.
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  • Long-term Metallurgical Stability and Materials Integrity of High Temperature Plants
    Yusaku WADA
    1995 Volume 33 Issue 1 Pages 25-33
    Published: January 25, 1995
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.33.25
    JOURNAL FREE ACCESS
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  • Design of Quick Closure Device for Pressure Vessels (Part 4) (Introduction of JIS B 8284)
    Shozo YANAGIDA, Akira SUZUKI, Makoto AKATSU
    1995 Volume 33 Issue 1 Pages 34-39
    Published: January 25, 1995
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.33.34
    JOURNAL FREE ACCESS
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    In JIS B 8284, Quick Closure Device for Pressure Vessels, quick closure devices are grouped to several types depending on their configurative construction, out of which the integral type, devided clamp type and integral with ratch type were already explained for strength calculation, respectively, in Part 1, Part 2 and Part 3 of this series of articles.
    The present article (Part 4) is published to give guidance on the basis idea for the strength calculation of closures of the sectional ring type.
    Sectional ring type has been used since long ago and one of the types specified by JIS B 8275, Cover Plate for Pressure Vessels. Sectional ring type is used mainly for vessels used under higher pressures but smaller in vessel size.
    However, no standardized procedures for strength calculation of this type had been available, so far.
    This article will be useful for design calculation of quick closure devices of the sectional ring type, and other equipment of similar construction.
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  • Overview of 1994 ASME PRESSURE VESSEL & PIPING CONFERENCE
    Takayasu TAHARA
    1995 Volume 33 Issue 1 Pages 40-44
    Published: January 25, 1995
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.33.40
    JOURNAL FREE ACCESS
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    1994 ASME PRESSURE VESSELS & PIPING CONFERENCE was held on 19-23, June at Hyatt Regency Hotel, Minneapolis, Minesota, USA. Title of the conference was “Quality Engineering-Application & Experience in PVP Industry”.
    Several interesting sessions and sessions presented papers from my company are briefly reported for information.
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  • [title in Japanese]
    [in Japanese]
    1995 Volume 33 Issue 1 Pages 45
    Published: January 25, 1995
    Released on J-STAGE: August 05, 2010
    DOIhttps://doi.org/10.11181/hpi1972.33.45
    JOURNAL FREE ACCESS
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