John Wallace

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

Testing and Measuring | Articles | The Tube & Pipe Journal

Finding poor-diffusion bonds in ferrous, nonferrous tubes

December 11, 2007 | By John Wallace

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.

Continue Reading