Title:
【発明の名称】劣化度予測装置および方法
Document Type and Number:
Japanese Patent JP2738732
Kind Code:
B2
Abstract:
Measurement of a physical property such as coercive force of a member to be inspected is performed at a plurality of locations in one region of the member. Similar measurement is performed in a plurality of different regions of the member and a maximum or minimum value (extreme value) is determined for each of the regions. On the basis of the extreme values thus determined, a recurrence period is determined in accordance with an extreme value statistic theory with the aid of a computer, whereon an estimated maximum value of the physical property of the member as a whole is determined from the recurrence period. On the basis of the estimated maximum value, the degree of deterioration of the member is predicted by the computer by consulting the data indicating the previously determined relation between the physical property and the degree of deterioration.
Inventors:
OOTAKA MASAHIRO
ISHIKAWA JUICHI
TAKAKU KAZUO
YOSHIMURA TOSHIHIKO
SHIMIZU TASUKU
ISHIKAWA JUICHI
TAKAKU KAZUO
YOSHIMURA TOSHIHIKO
SHIMIZU TASUKU
Application Number:
JP1394789A
Publication Date:
April 08, 1998
Filing Date:
January 25, 1989
Export Citation:
Assignee:
HITACHI SEISAKUSHO KK
International Classes:
B24B27/033; G01N1/04; G01N1/28; G01N27/00; G01N27/72; G07C3/00; G21C13/087; G21C17/00; G01Q20/00; (IPC1-7): G01N27/72; B24B27/033; G01N1/04; G01N1/28
Domestic Patent References:
| JP5890163A | ||||
| JP6079136U | ||||
| JP367084B1 | ||||
| JP7104229B2 |
Other References:
配管技術，２９，１０，ＰＰ．９１−９６ （１９８７）
配管技術，２９，１０，ＰＰ．９７−１０２ （１９８７）
配管技術，２９，１０，ＰＰ．９７−１０２ （１９８７）
Attorney, Agent or Firm:
Katsuo Ogawa (1 person outside)