Title:
ROPE INSPECTION DEVICE AND ROPE INSPECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/176096
Kind Code:
A1
Abstract:
In a rope inspection device for inspecting a belt-like rope (100) that includes a belt-like CFRP and a covering that covers the CFRP: an AC magnetic field is applied to the CFRP and an eddy current generated by the AC magnetic field is detected (200); a fiber image that depicts a detection signal (B), which represents the intensity of the eddy current, and a distribution of the intensity of the eddy current, is generated on the basis of detection results in a plurality of respective unit areas having one end in a plurality of mutually different positions in the CFRP length direction; and the presence of a defect in the unit areas is determined on the basis of the result of a comparison between the detection signal (B) and a threshold and the result of image recognition of the fiber image (C). Various defects can be detected including longitudinal cracks in the carbon fibers.
Inventors:
HOTTA AKIRA (JP)
WATANABE YOSHIMASA (JP)
HAYASHI MASATERU (JP)
INOUE JIN (JP)
WATANABE YOSHIMASA (JP)
HAYASHI MASATERU (JP)
INOUE JIN (JP)
Application Number:
PCT/JP2021/006088
Publication Date:
August 25, 2022
Filing Date:
February 18, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01N27/90
Foreign References:
| JP2020046215A | 2020-03-26 | |||
| JP2020034294A | 2020-03-05 | |||
| US20190202666A1 | 2019-07-04 | |||
| US20200088685A1 | 2020-03-19 | |||
| JP2012112868A | 2012-06-14 | |||
| JP2006030004A | 2006-02-02 | |||
| JPH08211024A | 1996-08-20 | |||
| JP2013011588A | 2013-01-17 |
Other References:
MACHADO MIGUEL A.; ANTIN KIM-NIKLAS; ROSADO LUíS S.; VILAçA PEDRO; SANTOS TELMO G.: "Contactless high-speed eddy current inspection of unidirectional carbon fiber reinforced polymer", COMPOSITES PART B, ELSEVIER, AMSTERDAM, NL, vol. 168, 1 January 1900 (1900-01-01), AMSTERDAM, NL, pages 226 - 235, XP085661594, ISSN: 1359-8368, DOI: 10.1016/j.compositesb.2018.12.021
ANTIN KIM-NIKLAS; MACHADO MIGUEL A.; SANTOS TELMO G.; VILAçA PEDRO: "Evaluation of Different Non-destructive Testing Methods to Detect Imperfections in Unidirectional Carbon Fiber Composite Ropes", JOURNAL OF NONDESTRUCTIVE EVALUATION., PLENUM PUBLISHING CORPORATIONT. NEW YORK., US, vol. 38, no. 1, 13 February 2019 (2019-02-13), US , pages 1 - 12, XP036754739, ISSN: 0195-9298, DOI: 10.1007/s10921-019-0564-y
ZHANG NA; YE CHAOFENG; PENG LEI; TAO YU: "Novel Array Eddy Current Sensor With Three-Phase Excitation", IEEE SENSORS JOURNAL, IEEE, USA, vol. 19, no. 18, 15 September 2019 (2019-09-15), USA, pages 7896 - 7905, XP011740215, ISSN: 1530-437X, DOI: 10.1109/JSEN.2019.2919661
ANTIN KIM-NIKLAS; MACHADO MIGUEL A.; SANTOS TELMO G.; VILAçA PEDRO: "Evaluation of Different Non-destructive Testing Methods to Detect Imperfections in Unidirectional Carbon Fiber Composite Ropes", JOURNAL OF NONDESTRUCTIVE EVALUATION., PLENUM PUBLISHING CORPORATIONT. NEW YORK., US, vol. 38, no. 1, 13 February 2019 (2019-02-13), US , pages 1 - 12, XP036754739, ISSN: 0195-9298, DOI: 10.1007/s10921-019-0564-y
ZHANG NA; YE CHAOFENG; PENG LEI; TAO YU: "Novel Array Eddy Current Sensor With Three-Phase Excitation", IEEE SENSORS JOURNAL, IEEE, USA, vol. 19, no. 18, 15 September 2019 (2019-09-15), USA, pages 7896 - 7905, XP011740215, ISSN: 1530-437X, DOI: 10.1109/JSEN.2019.2919661
Attorney, Agent or Firm:
YAMAGATA Yoichi et al. (JP)
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