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US 12,007,363 B2Granted
Measuring method and measuring device
AssigneeKabushiki Kaisha Toshiba
InventorsTakashi Usui, Kazuo Watabe
Life of this patent
Estimating the term…
Abstract
A measuring method in an embodiment includes detecting elastic waves generated in a structural object formed of a solid material in a non-contact manner and estimating a position of an occurrence source of the elastic waves on the basis of information regarding an intensity of a signal of the detected elastic waves.
Claims14
A measuring method, comprising:
- detecting sound waves radiated from point sound sources on a surface of a structural object formed of a solid material due to generation of elastic waves at an occurrence source inside the structural object and propagation of the elastic waves from the occurrence source to the surface at a plurality of positions based on a reference position in a non-contact manner;
- and
- estimating a position of the occurrence source of the elastic waves by calculating a distance from the reference position to the occurrence source in a plan view on the basis of a relationship estimated by calculations in advance between variable distances and amplitude values of sound waves depending on azimuth angles of axes connecting each of the plurality of positions and the reference position with respect to a direction from the occurrence source toward the reference position, and on the basis of amplitude values of the detected sound waves depending on the azimuth angles.
A measuring device, comprising:
- a sensor part having at least one sensor configured to detect sound waves radiated from point sound sources on a surface of a structural object formed of a solid material due to generation of elastic waves at an occurrence source inside the structural object and propagation of the elastic waves from the occurrence source to the surface at a plurality of positions based on a reference position in a non-contact manner;
- and
- a position estimation mechanism configured to estimate a position of the occurrence source of the elastic waves by calculating a distance from the reference position to the occurrence source in a plan view on the basis of a relationship estimated by calculations in advance between variable distances and amplitude values of sound waves depending on azimuth angles of axes connecting each of the plurality of positions and the reference position with respect to direction from the occurrence source toward the reference position, and on the basis of amplitude values of the sound waves detected by the sensor depending on the azimuth angles.
Dependencies are inferred from the claim text.