Matrix capture approach for eddy current (ec) inspection

A system for performing an eddy current measurement using matrix capture, the system comprising:

• a transmitter circuit configured to generate an excitation signal;
• a receiver circuit configured to receive an eddy current measurement;
• a multiplexer configured to selectively route the excitation signal to a selected sensor in an eddy current array (ECA) sensor;
• a processor circuit communicatively coupled with the transmitter circuit, the receiver circuit, and the multiplexer circuit;
• and
• a memory circuit communicatively coupled with the processor circuit, the memory circuit comprising instructions that, when executed by the processor circuit, cause the system to:
• for elements in the eddy current array (ECA) sensor:
• generate the excitation signal and route the excitation signal to a selected transmit element amongst the elements;
• and
• receive and digitize eddy current measurements from respective receive elements from amongst the elements in response to the excitation signal;
• and
• construct a synthetic measurement by aggregating received eddy current measurements for different transmit-receive pairs of elements including applying gain factors based on a transmit element index and a receive element index.