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The Use of Full Matrix Capture and Software Beam Forming for Reduced Inspection Times

Typical implementations of the full matrix capture technique (FMC) of ultrasonic inspection are slow and computationally expensive. As such, the technique has gained the reputation of being a “science experiment” or “lab curiosity”. Three factors which lead to this slowness are limited data throughput, limited processing power, and fundamental (ultrasonic) limitations of data collection. Moreover, typical implementations of matrix capture inspections lead to results that are not directly comparable with those produced by monolithic or phased-array inspections. In this work we will show that, under certain circumstances, the FMC technique may be applied in a manner that is equal in speed, or even potentially much faster, than those attainable by conventional phased array techniques. We argue that the special circumstances under which this technique may be performed are reasonable for typical scans. In addition, due to rapid advances in computing technology, the required computational horsepower is not only available but is actually quite practical to achieve using general-purpose equipment.

  1. Steven J. Younghouse, Daniel T. MacLauchlan, Nicholas J. Borchers, “Ultrasonic Inspection Method,” U.S. Published Patent Application 20140219059, August 7, 2014.
  2. D. T. MacLauchlan, B.E. Cox “Ultrasonic Inspection Method,” U.S. Patent 7823454, Nov. 2nd, 2010.
  3. D. T. MacLauchlan, B.E. Cox “Ultrasonic Inspection Method,” U.S. Patent 9038471, May. 26th, 2015.
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