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    Method and apparatus for detecting embrittlement of a measuring object
    3.
    发明公开
    Method and apparatus for detecting embrittlement of a measuring object 失效
    用于检测金属材料降解的方法和装置

    公开(公告)号：EP0308888A3

    公开(公告)日：1989-12-20

    申请号：EP88115467.8

    申请日：1988-09-21

    申请人： HITACHI, LTD.

    发明人： Otaka, Masahiro ,  Enomoto, Kunio Midorigaoka Danchi D-6 ,  Hasegawa, Kunio ,  Hayashi, Makoto ,  Shimizu, Tasuku ,  Takaku, Kazuo

    IPC分类号： G01N27/82

    CPC分类号： G01N27/72 ,  G01N17/00 ,  Y10S505/846

    摘要： On the basis of a finding that a magnetic hysteresis of a metal material, among magnetization characteristics changing with secular degradation of the metal material, shows a clear correspondence with the degree of degradation of the metal material, a change in such a magnetization characteristic is measured to estimate the degree of secular degradation of the metal material. In a typical embodiment, a superconducting quantum interference device (33; 340) is used to detect the magnetization characteristic of a measuring object (1; 11). According to the present invention, the degree of embrittlement of a metal material used in an environment of high tempera­tures can be quickly detected in a non-destructive fashion so that the danger of brittle fracture of the metal material can be reliably prevented.

    Method and apparatus for detecting embrittlement of metal material
    4.
    发明公开
    Method and apparatus for detecting embrittlement of metal material 失效
    Verfahren undGerätzur Detektion derVersprödungvon Metallen。

    公开(公告)号：EP0646790A1

    公开(公告)日：1995-04-05

    申请号：EP94119232.0

    申请日：1988-09-21

    申请人： HITACHI, LTD.

    发明人： Otaka, Masahiro ,  Enomoto, Kunio ,  Hasegawa, Kunio ,  Hayashi, Makoto ,  Shimizu, Tasuku ,  Takaku, Kazuo

    IPC分类号： G01N27/72

    CPC分类号： G01N27/72 ,  G01N17/00 ,  Y10S505/846

    摘要： On the basis of a finding that a magnetic hysteresis of a metal material, among magnetization characteristics changing with secular embrittlement of the metal material, shows a clear correspondence with the degree of embrittlement of the metal material, a change in such a magnetization characteristic is measured to estimate the degree of secular embrittlement of the metal material. In a typical embodiment, a superconducting quantum interference device (340) is used to detect the magnetization characteristic of a measuring object (11). According to the present invention, the degree of embrittlement of a metal material used in an environment of high temperatures can be quickly detected in a non-destructive fashion so that the danger of brittle fracture of the metal material can be reliably prevented.

    摘要翻译： 基于金属材料的磁滞特性随着金属材料的长期脆化变化的磁化特性显示与金属材料的脆化程度明显对应的结果，测量这种磁化特性的变化 以估计金属材料的长期脆化程度。 在典型的实施例中，超导量子干涉装置（340）用于检测测量对象（11）的磁化特性。 根据本发明，可以以非破坏性的方式快速地检测在高温环境中使用的金属材料的脆化程度，从而可以可靠地防止金属材料脆性断裂的危险。

    Method and apparatus for detecting embrittlement of a measuring object
    5.
    发明公开
    Method and apparatus for detecting embrittlement of a measuring object 失效
    Apparat und Verfahren zur Detektion derSchäden一个metallischem Stoff。

    公开(公告)号：EP0308888A2

    公开(公告)日：1989-03-29

    申请号：EP88115467.8

    申请日：1988-09-21

    申请人： HITACHI, LTD.

    发明人： Otaka, Masahiro ,  Enomoto, Kunio Midorigaoka Danchi D-6 ,  Hasegawa, Kunio ,  Hayashi, Makoto ,  Shimizu, Tasuku ,  Takaku, Kazuo

    IPC分类号： G01N27/82

    CPC分类号： G01N27/72 ,  G01N17/00 ,  Y10S505/846

    摘要： On the basis of a finding that a magnetic hysteresis of a metal material, among magnetization characteristics changing with secular degradation of the metal material, shows a clear correspondence with the degree of degradation of the metal material, a change in such a magnetization characteristic is measured to estimate the degree of secular degradation of the metal material. In a typical embodiment, a superconducting quantum interference device (33; 340) is used to detect the magnetization characteristic of a measuring object (1; 11). According to the present invention, the degree of embrittlement of a metal material used in an environment of high tempera­tures can be quickly detected in a non-destructive fashion so that the danger of brittle fracture of the metal material can be reliably prevented.

    摘要翻译： 基于金属材料的磁滞特性在金属材料的长期劣化变化的磁化特性中显示与金属材料的劣化程度明显对应的结果的基础上，测量这种磁化特性的变化 以估计金属材料的长期衰退的程度。 在典型的实施例中，使用超导量子干涉装置（33; 340）来检测测量对象（1; 11）的磁化特性。 根据本发明，可以以非破坏性的方式快速地检测在高温环境中使用的金属材料的脆化程度，从而可以可靠地防止金属材料脆性断裂的危险。