Arrays of magnetoresistive sensors for nondestructive testing
David P. Pappas, Fabio C. da Silva, Alexy V. Nazarov
Magnetic field distributions were measured for test stripline structures with anisotropic magnetoresistive (AMR), thin film Permalloy sensors. Linear arrays of eight barber-pole-type AMR sensors were used to increase the speed of the imaging and stability of scanning. The magnetic field distributions were converted to the distribution of electric current density in a stripline by inverting Maxwell's equations.