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16th WCNDT 2004 - World Conference on NDT
CD-ROM Proceedings, Internet Version of ~600 Papers
Aug 30 - Sep 3, 2004 - Montreal, Canada
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SESSION: ARRAY TRANSDUCERS
ABSTRACT:
REPRODUCIBILITY AND RELIABILITY OF NDT PHASED ARRAY PROBES 
J. Poguet1, and P.Ciorau 
1 Imasonic, Besançon, France; 2 Ontario Power Generation Inc., Pickering, Ontario 

Over the past few years, new procedures involving phased array technology were implemented through a 
growing number of NDT inspections. As this technology is now in production, requirements on the systems 
and on the transducers are increasing, especially about reliability and reproducibility

Imasonic has developed phased array probes for industrial applications for more than 10 years, and its 
phased array technology early took into account these requirements. Some examples will be given based on 
internal quality records and also based on the feed back from Ontario Power Generation which has a large 
experience in Turbine inspection with phased array. 

Since 1996, OPG implemented industrial inspection procedure for  turbine inspection using more than 100 
phased array probes. Quality records from OPG will also be presented to illustrate phased array  probes 
capabilities  in terms of reproducibility and reliability

OPG results include data for a batch of probes (3-10) manufactured on the same design requirement, but in 
different years. The following data will be presented: Gain sensitivity for best detection angle, S/N, sizing 
capability, Fc, BW, PD, beam features (focal depth, focal length-depth of field, focal beam dimensions) for 
L-waves and T-waves.
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MAIN AUTHOR:Jérôme Poguet, Imasonic, Besançon, France; P.Ciorau Ontario Power Generation Inc., Pickering, Ontario , Imasonic, France
Paper CODE: 66

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