Microscaled Multi-frequency Eddy Current Analysis for High Throughput Characterization of Steel Micro-samples

Abstract In the present study microscaled samples were investigated using multi-frequency eddy current analysis with high spatial resolution. Multi-frequency analyses performed different exciting frequencies have shown that local signal distribution depends on geometry of samples. Due to this fact, positioning sensor may influence material state qualification. The investigation several heat treatment conditions steel 100Cr6 (AISI 52100) in spheroidized carbide, bainitic, martensitic quenched, and tempered states showed can be assessed differentiated from each other. recorded signals analysed discussed. It was that, increased frequency, differences values obtained for increased, allowing a robust identifaction states. best differentiation 10 MHz. frequency-dependent position error estimated. decreased 70% at10 kHz 6% at shows fast method is qualified screening high-throughput development.