Abstract
In order to realise an advanced nondestructive inspection technique characterised by high sensitivity and high accuracy, a new method has been developed for the detection and characterisation of surface cracks in metals by means of micro antennas. The principle of this new technique is described here. A new probe combined with a conductive wire is developed with the aim of easier and quicker measurement. Experiments were performed for the detection and characterisation of artificial surface defects in austenitic stainless steel specimens. Also, fatigue cracks in paramagnetic and ferromagnetic materials were detected by use of this new probe.
