Contact inspection of parts with irregular geometry
Welds, bends, pipe repairs in nuclear power stations, etc...
1D phased array transducers are flexible, and can
thus ensure good coupling on the geometry of the inspected part.
The active part consists of a set of independent, articulated mechanical
elements, for adapting the geometry in the scanning direction.
The sensor integrates real-time measurement of each element's position,
and thus of the surface, so when it is used with compatible electronics,
the delay laws can be adapted in real time to steer the beam by
compensating for the variations of the interface.
real time adaptation of delay laws of a 1D flexible contact transducer
when passing over a welding seam (courtesy CEA-List France).
Feasibility of certain inspections
Improvement in focusing quality by being freed from the interface
Increase in lateral resolution through the use of larger active
Configurations already developped*
Number of elements
Total operture (mm)
1.7 x 22
41 x 22
1.4 x 17
34 x 17
1.4 x 17
45 x 17
0.9 x 9
22 x 9
*These configurations have been developed and tested
in the context of various applications. This list is not exhaustive,
and the concepts of 1D flexible transducers remain adaptable to
the needs of other applications.
The concept implemented in these transducers, of
updating the delay laws in real time according to the real position
of individual elements, is covered by a patent registered with the
CEA (Atomic Energy Commission, France).
IMASONIC holds the exclusive licence for the use of this patent
in designing and manufacturing these transducers.