Advancing eddy current detection probes with magnetoelectric composite Materials: Enhancing crack detection in conductive materials

Abstract

Eddy current testing (ECT) is a non-destructive method widely employed for detecting cracks in various conductive materials. However, the applicability of detection probes in low-frequency settings is limited by their sensitivity and size. This study introduces a novel magnetic detection probe for ECT, utilizing dual-magnetoelectric (ME) composites in a differential noise cancellation mode to enhance detection capabilities at low frequencies (kHz). Our investigation demonstrates the superior performance of the proposed detection probe compared to traditional copper coils. Through numerical analysis of the ME detection probe's voltage output, we establish its efficacy in identifying small defects or cracks in conductive materials. Furthermore, this research explores a crucial factor for accurately estimating crack length and depth in system analysis applications. The study significantly contributes to the field of magnetism and magnetic materials, paving the way for the development of more effective and versatile crack detection techniques.