NDT.net - October 2000, Vol. 5 No. 10

Design and Application of Low-Frequency Twin Side-by-Side Phased Array Transducers for Improved UT Capability on Cast Stainless Steel Components

M. Delaide, G. Maes
AIB-Vinçotte International, Brussels, Belgium
D. Verspeelt
R/D Tech, Québec, Canada
Corresponding Author Contact:
Email: info@rd-tech.com , Web: http://www.rd-tech.com

2nd International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurized Components, New Orleans May 2000.



Principles of standard TRL search units

Principles of the phased-array technique

Design of twin side-by-side phased array probes

Fabrication and characterization

Characterization on carbon steel test blocks

Assessment of UT capability on austenitic steel


Figure 9 Comparison between TRL PA and TRL on SDH4.8 depth 20, 40, 60 mm TRL PA probe TS45 1 6A1 SN 514, Settings: 30° focal depth 50 mm TRL PA probe TS45 1 6A1 SN 514, Settings: 45° focal depth 75 mm TRL PA probe TS45 1 6A1 SN 514, Settings: 50° focal depth 50 mm Focused TRL TS45 1 635 SN 98666


  1. Dombret Ph., Methodology for the ultrasonic testing of austenitic stainless steel. Nuclear Engineering and Design 131(1991), North-Holland, pp. 279-284.
  2. G. Maes, Mathematical model for the development and optimization of ultrasonic transducers for non-destructive testing in the nuclear industry. MATHEMATICAL and INTELLIGENT models in system simulation: JC Baltzer AG, Scientific Publishing Co IMACS, 1991, pp. 403-40
  3. G. Maes, M. Lepièce, "Advanced procedures for the ultrasonic examination of narrow gap welds connecting the steam generator to the RCS piping", 14th Int. Conference on NDE in the Nuclear and Pressure Vessel industries, Stockholm, September 1996. [conference paper] Gebhardt W.G., Electronic Beam Forming, Defect Reconstruction and Classification by Ultrasonic Phased Arrays. NON DESTRUCTIVE TESTING, Vol, 7, 1984, pp. 115-143. [book]"EPRI Phased Array Inspection Seminar ". Portland August/September 1998. [seminar proceedings)

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/DB:Article /SO:EPRI /AU:Delaide_M /AU:Maes_G /AU:Verspeelt_D /IN:RDTech /CN:CA /CT:UT /CT:array /CT:casting /CT:energy /ED:2000-10