According to the magnetic flux leakage (MFL) properties, the MFL inspection system based on Lab VIEW was devised and the defects MFL testing of ferromagnetic materials was done to inspect their defects non-destructively for improving their reliability.
There are 3 steps to test MFL:magnetization, sensing, data acquisition and processing. The magnetization was studied by two methods:equivalent magnetic charge method (EMC) and finite elements method (FEM). Three simplified defects'math-models were v-shap...