Which of the following can enhance the reliability of Eddy Current Testing results?

Using multiple probe types to cross-verify results enhances the reliability of Eddy Current Testing outcomes by allowing for a more comprehensive analysis of the material being tested. Different probe types can be designed to respond to various defect sizes, shapes, and orientations, as well as to work effectively in different materials or environments. By employing various probes, the inspector can gather more data, validate findings, and identify potential issues that a single probe might miss. This approach helps to mitigate the risks associated with false positives or negatives, ultimately leading to more accurate and trustworthy results in the testing process.

In contrast, disregarding surface contaminants can lead to inaccurate readings, as these contaminants may interfere with the electrical signals used in Eddy Current Testing. Testing at varying temperatures introduces another variable that can affect material properties and, in turn, test results, making it less reliable if not managed properly. Relying solely on automatic readings can overlook subtle flaws that an experienced operator might detect through manual inspection or interpretation of data, thus potentially compromising the overall reliability of the testing.