Трехмерная рентгеновская томография промышленных объектов при ограниченных размерах регистрирующего экрана
Трехмерная рентгеновская томография промышленных объектов при ограниченных размерах регистрирующего экрана
2021-09-01
SCID: 54.1/wxhqdwx3
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3D X-ray tomographycircular and spiral scanning schemescrack-like defect detectionlimited-size registering screentwo-pass spiral scanning
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Abstract (AI)
The article investigates the possibilities of using a 3D tomograph with a limited-sizes registering screen for detecting arbitrarily oriented crack-like defects in large industrial objects. Circular and spiral scanning schemes are considered, the principal possibility of detecting defects in the case of two-pass spiral scanning and a registering screen covering half of the view field of the test object cross-section is shown. The performance of the 3D reconstruction algorithm for the selected scanning method has been demonstrated.
Key Findings
1
A 3D reconstruction algorithm for the selected scanning method (two-pass spiral) was developed and its performance demonstrated.
2
A 3D tomograph with a limited-size registering screen can detect arbitrarily oriented crack-like defects in large industrial objects.
3
Circular and spiral scanning schemes were evaluated, identifying two-pass spiral scanning as capable of defect detection with a half-view registering screen.
4
Detection is feasible even when the registering screen covers only half of the test object cross-section during two-pass spiral scanning.
Research Object
3D X-ray tomograph with a limited-size detector screen used for imaging large industrial objects
Research Subject
Detection and 3D reconstruction of arbitrarily oriented crack-like defects in large industrial objects using circular and two-pass spiral scanning with a detector covering half the cross-sectional field
Publication Details
Publication Date
2021-09-01
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