John Wallace


Casting Analysis Inc.
8379 Ursa Lane
Weyers Cave, VA 24486
Tube seam laser welding

Finding poor-diffusion bonds in ferrous, nonferrous tubes

December 11, 2007

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Determining whether a tube seam has a partial bond can be difficult with standard ultrasonic or eddy current techniques. However, multifrequency, probe-based eddy current equipment can detect poor-diffusion bonds in nonferrous materials. Using a penetrating field to reflect a signal off the planar structure of the weld works on ferrous materials.

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