What is the primary purpose of using a reference standard in Eddy Current Testing?

The primary purpose of using a reference standard in Eddy Current Testing is to help identify anomalies in the test material. A reference standard serves as a baseline or benchmark that represents known characteristics of the material being tested. By comparing the signals generated from the test material to those from the reference standard, inspectors can detect deviations or anomalies indicative of issues such as flaws, cracks, or variations in material properties.

Having a calibrated reference point allows for improved interpretation of the eddy current signals generated during the testing process. This practice enhances the reliability of defect detection and facilitates the precise assessment of the test material's integrity. The reference standard thus plays a crucial role in ensuring that any detected anomalies can be effectively correlated to specific types of defects or material conditions, leading to more accurate results.