Patent ID: 11946906
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 13:
14. A damaged region determination method, comprising:
locating positions of sources of a plurality of elastic waves based on the plurality of elastic waves detected by each of a plurality of sensors that detects elastic waves generated in a target object related to a railway which is a determination target of a damaged region; and
determining the damaged region in the target object based on the located positions of the sources of the plurality of elastic waves, wherein
the target object is a rail, the method further comprising:
applying a current to the rail;
locating the position of the source of the elastic wave emitted when the current flowing through the rail leaks and electrolytic corrosion occurs;
deriving a source distribution representing the located positions of the sources of the plurality of elastic waves; and
determining the damaged region in the rail using the source distribution.