... to the magnetic field lines, thus reducing the loss of the field produced. This helps in improving the sensitivity of the coil, and makes the detection system effective in detecting hairline cracks. © Emerald Group Publishing Limited 2013 Eddy currents Non-destructive testing Coils Crack detection...

... phenomena. © MCB UP Limited 2003 Thermal testing Integrated circuits Non‐destructive testing The thermoreflectance technique is based on a physical property of materials. As the optical reflection coefficient R of a given material changes with the temperature T...