Title:
INSPECTION DEVICE AND INSPECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/163556
Kind Code:
A1
Abstract:
An inspection device (120) for inspecting a structure having a crack is provided with an acquiring unit (121) for acquiring a plurality of images of the structure captured at mutually different times when a load applied to the structure is changing, a crack detection unit (122) for detecting a crack on the surface of the structure in each of the plurality of images, a movement estimation unit (123) for deriving a plurality of movement vectors by estimating localized movement of the surface of the structure using a predetermined position of the detected crack as a reference in the plurality of images, and an inspection unit (124) for determining the safety of the structure on the basis of a difference in movement vectors between positions symmetrical about the crack.
Inventors:
IMAGAWA TARO
KUSAKA HIROYA
NODA AKIHIRO
KUSAKA HIROYA
NODA AKIHIRO
Application Number:
PCT/JP2019/004559
Publication Date:
August 29, 2019
Filing Date:
February 08, 2019
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G01N21/88; G01B11/30; G01M99/00; G06T7/223
Foreign References:
| JP2009217583A | 2009-09-24 | |||
| JP2010537434A | 2010-12-02 |
Other References:
ISHII, NORIMASA ET AL.: "Evaluation of behavior of CT type specimen during fatigue crack propagation by PIV method", LECTURE PROCEEDINGS OF THE KYUSHU BRANCH OF JAPAN WELDING SOCIETY, vol. 14, 2017, pages 35 - 38
OHTA, MASAHIKO ET AL.: "Crack depth estimation based on motion vector field analysis", PROCEEDINGS OF THE 2015 IEICE GENERAL CONFERENCE, 2015, pages D- 11 - 14
MORIYAMA, M. ET AL.: "Image Based Displacement Vector Estimation Method Around the Fatigue Crack Tip", KEY ENGINEERING MATERIALS, vol. 452, no. 453, 2011, pages 341 - 344
MATSUO, TAKESHI ET AL.: "About accuracy verification of bridge behavior understanding, which utilizes image processing technology etc.", LECTURE SUMMARIES OF THE 72ND ANNUAL ACADEMIC LECTURE CONFERENCE OF JAPAN SOCIETY OF CIVIL ENGINEERS, September 2017 (2017-09-01), pages 1935 - 1936
OHTA, MASAHIKO ET AL.: "Crack depth estimation based on motion vector field analysis", PROCEEDINGS OF THE 2015 IEICE GENERAL CONFERENCE, 2015, pages D- 11 - 14
MORIYAMA, M. ET AL.: "Image Based Displacement Vector Estimation Method Around the Fatigue Crack Tip", KEY ENGINEERING MATERIALS, vol. 452, no. 453, 2011, pages 341 - 344
MATSUO, TAKESHI ET AL.: "About accuracy verification of bridge behavior understanding, which utilizes image processing technology etc.", LECTURE SUMMARIES OF THE 72ND ANNUAL ACADEMIC LECTURE CONFERENCE OF JAPAN SOCIETY OF CIVIL ENGINEERS, September 2017 (2017-09-01), pages 1935 - 1936
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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