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METHOD AND APPARATUS FOR NONDESTRUCTIVE TESTING OF FERROMAGNETIC ARTICLES,TO DETERMINE THE LOCATION,ORIENTATION AND DEPTH OF DEFECTS IN SUCH ARTICLES UTILIZING THE BARKHAUSEN EFFECT
METHOD AND APPARATUS FOR NONDESTRUCTIVE TESTING OF FERROMAGNETIC ARTICLES,TO DETERMINE THE LOCATION,ORIENTATION AND DEPTH OF DEFECTS IN SUCH ARTICLES UTILIZING THE BARKHAUSEN EFFECT