公开(公告)号：EP0308888B1

公开(公告)日：1995-06-21

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

公开(公告)号：EP0646790B1

公开(公告)日：2000-05-03

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

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.

公开(公告)号：EP0716300A1

公开(公告)日：1996-06-12

申请号：EP95118988.5

申请日：1995-12-01

申请人： HITACHI, LTD.

发明人： Takeda, Eriko ,  Nishino, Toshikazu ,  Otaka, Masahiro ,  Morinaka, Ren ,  Takahashi, Fuminobu

IPC分类号： G01N27/82

CPC分类号： G01N27/82 ,  Y10S505/846

摘要： A measurement system for material deterioration which can be used in the presence of a radiation source or radiation emitted therefrom at least comprises a detection circuit 1 containing a magnetic flux sensor using superconductor at least in some places, a signal processing circuit 2 at least including a semiconductor device to process the signal output from said detection circuit 1, and a signal transmitting means between said detection circuit 1 and said signal processing circuit 2, wherein said signal processing circuit 2 is installed at a place where the dose equivalent of radiation is equal to or smaller than that of said detection circuit 1.

摘要翻译： 用于材料劣化的测量系统，其可以在辐射源或从其发射的辐射的存在下使用至少包括至少在一些地方包含使用超导体的磁通量传感器的检测电路1，信号处理电路2至少包括 用于处理从所述检测电路1输出的信号的半导体器件，以及在所述检测电路1和所述信号处理电路2之间的信号发送装置，其中所述信号处理电路2安装在辐射剂量当量等于 或小于所述检测电路1的影像

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。

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。