A method of calibration of NDT systems for measurement of the internal structure of large-scale objects

The method uses delta changes and goniometric calculations with robotic arms to calibrate the relative positions of radiation sources and detectors for non-destructive testing of large-scale objects, ensuring accurate alignment and synchronization.

WO2025218839A1 Publication Date: 2025-10-23RADALYTICA SRO
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Patent Information

Application Number
PCT/CZ2025/050011
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-04-14
Filing Date
2025-01-30
Publication Date
2025-10-23

AI Technical Summary

Technical Problem

Determining the relative position of the source of penetrating ionizing radiation and the imaging detector is challenging in non-destructive testing systems for large-scale objects, as they cannot be replaced by a reference object, leading to insufficient accuracy in robotic CT scanners.

Method used

A method involving robotic arms with a source and imaging detector, controlled by a server, uses delta changes in position to calibrate the relative positions by adjusting the collimated beam and detector, employing goniometric calculations to determine the exact positioning without direct visibility, facilitated by mechanical connections or laser measurements.

Benefits of technology

Enables precise calibration of NDT systems for large-scale objects, allowing accurate alignment and synchronization of robotic arms for non-destructive testing, overcoming visibility obstructions and improving measurement accuracy.

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Abstract

Disclosed is a calibration method of a device for non-destructive measurement of the internal structure of large-scale objects (4), comprising a first robotic arm (1) equipped with a source (2) of penetrating ionizing radiation, a second robotic arm (7) equipped with an imaging detector (6) of ionizing radiation, and a server for synchronized control of the robotic arms (1, 7), which is connected for communication to the robotic arms (1, 7). Any robotic arm (1, 7) changes its position at least once by a defined delta change. A change in the position of incidence of a collimated beam (5) of the penetrating ionizing radiation on the imaging detector (6) is measured, or a change in the position of the second robotic arm (7) with the imaging detector (6) is measured to maintain an initial position of incidence of the collimated beam (5) of ionizing radiation on the imaging detector (6). The defined delta change and the associated change in the position of incidence of the collimated beam (5) on the imaging detector (6) or the change in the position of the second robotic arm (7) carrying the imaging detector (6) are used to calculate the relative position of the source (2) of penetrating ionizing radiation in relation to the imaging detector (6) of ionizing radiation.
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