Applications of Higher Sensitive Magnetic Field Sensors on Nondestructive Testing and Evaluation

Abstract

Recently, magnetic field sensors such as hall sensor, magnetoresisitive sensor, fluxgate sensor and magnetoimpedance sensor advance their sensitivity and their miniaturization; this contributes to enhance of electromagnetic nondestructive testing and evaluation (NDT & E) techniques, eddy current testing (ECT) and magnetic flux leakage (MFL), for social foundations. This paper reviews the case studies in applications of higher sensitive and miniaturized magnetic field sensor for NDT & E techniques.