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US 10,241,061 B2Granted
Non-destructive inspection device and method
AssigneeRiken
InventorsYoshie Otake, Yoshimasa Ikeda
Life of this patent
Estimating the term…
Abstract
A non-destructive inspection device 10 using backscattering of neutrons includes a neutron source 3 that radiates a pulse neutron beam to a surface 1a of an inspection target 1, a neutron detection device 5 that detects scattered neutrons scattered in the inspection target 1 and returned, and a measurement device 7 that measures the detection number of scattered and returned neutrons detected by the neutron detection device 5 and generates detection number data expressing the detection number with respect to time.
Claims20
A non-destructive inspection method comprising:
- making a pulse neutron beam incident on a surface of an inspection target;
- detecting scattered neutrons that are scattered in the inspection target and returned;
- measuring a detection number of the scattered neutrons at measurement time points wherein each detection number indicates a scalar amount;
- generating detection number data expressing each detection number with respect to time wherein the detection number data is an integrated value of the detection numbers at and after a second time point that arrives by elapse of a set time from a first time point at which the neutron source radiates the pulse neutron beam to the inspection target;
- and detecting a state of the inspection target on the basis of the integrated value,
- wherein the second time point is set such that among the scattered neutrons that are included in the pulse neutron beam radiated to the inspection target at the first time point, scattered in the inspection target, and returned, a first predetermined proportion or more of the scattered neutrons that have energy equal to or less than a preset value occur at and after the second time point.
3 more elements
A non-destructive inspection device comprising:
- a neutron source configured to radiate a pulse neutron beam to a surface of an inspection target;
- a neutron detection device configured to detect scattered neutrons that are scattered in the inspection target and returned;
- and
- a measurement device configured to measure a detection number of the scattered neutrons detected by the neutron detection device at measurement time points, and to generate detection number data expressing the detection number with respect to time wherein each detection number indicates a scalar amount,
- wherein the detection number data is an integrated value of the detection numbers at and after a second time point that arrives by elapse of a set time from a first time point at which the neutron source radiates the pulse neutron beam to the inspection target,
- the second time point is set such that among the scattered neutrons that are included in the pulse neutron beam radiated to the inspection target at the first time point, scattered in the inspection target, and returned, a first predetermined proportion or more of the scattered neutrons that have energy equal to or less than a preset value occur at and after the second time point.
3 more elements
Dependencies are inferred from the claim text.