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Sensitive Detection of planar Defects by a Mechanised Radiometric Weld Inspection System

B. Redmer, U. Ewert
Federal Institute for Materials Research and Testing (BAM), Berlin, Germany
A.V. Likhachov, V.V. Pickalov
Institute of Theoretical and Applied Mechanics, Novosibirsk, Russia
Y. Onel
Federal Institute for Materials Research and Testing (BAM), Berlin, Germany
Zheng Li
Tsinghua University, Bejing, China
V.A. Baranov
Institute of Introscopy, Tomsk, Russia
Contact

Introduction

Principle

Method of measurement

Laminography as a 3D-method

Planar Tomography for 2D-reconstruction (Cross Section Reconstruction)

Determination of wall thickness

Results and Conclusions

References:

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  2. B. Redmer, Y. Onel, U. Ewert, H. Diener, J. Müller: ,,Automatisierte Schweißnahtprüfung auf der Basis eines Zeilenscanners,,, Jahrestagung der DGZfP, Dresden, 5.-7. Mai, 1997, S. 769-776.
  3. R. T . Bernadi: "Steel weld inspection with digital radiographic line scanning", ASNT 1993 Spring Conference, 29.3.-2.4.93, Nashville, TN, USA, pp.78-80. pass median filtering.
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  7. U. Ewert, B. Redmer, J. Müller, M. Trobitz, V. Baranov: "Mechanized Radiation testing of Austenic Pipe Welds"; 24. MPA-Seminar, Stuttgart 1998, Vol. 1, pp. 13.1-13.4
  8. B. Redmer, U. Ewert, Y. Onel, J. Müller, H. Diener, M. Walkmann, V. Baranov: "Automated radiometric weld inspection in nuclear power industry by tomosynthesis";Computer Methods and Inverse Problems in Nondestructive Testing and Diagnostics (CM NDT-98), Minsk 1998, pp. 441-448
  9. S. Zolotarev, V. Vengrinovitch, G.-R. Tillack: "Finite series expansion method modified for multi-step reconstruction from limited number of projections and views"; Computer Methods and Inverse Problems in Nondestructive Testing and Diagnostics (CM NDT-98), Minsk 1998, pp.185-192.

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