What is the primary benefit of conducting a coherency check in Eddy Current Testing?

Conducting a coherency check in Eddy Current Testing primarily serves to validate the accuracy of the received signals against expected patterns. This process is crucial as it helps in determining whether the signals obtained during testing align with the predicted signatures of flaws or features in the material being inspected. The coherency check allows for the identification of any discrepancies or anomalies, ensuring that the signals are reliable and that the testing results can be considered valid. By confirming that the received signals match expected patterns, operators can confidently diagnose the condition of the material, leading to more accurate assessments of integrity and potential failures. The validity of signal patterns is fundamental to making informed decisions regarding maintenance and safety in various applications.