Construct Coil Probe Using GMR Sensor for Eddy Current Testing Moneer A Faraj, Ahmed N Abdalla, Fahmi Bin Samsuri, Damhuji Rifai and Kharudin Ali MATEC Web Conf., 225 (2018) 02021 Published online: 05 November 2018 DOI: 10.1051/matecconf/201822502021