Investigation of the Remote Detector Experiments on the Gorbunov Effect

The problem of determination of defects in metal structures in a contactless manner through the use of a microwave sensor is relevant since as was developed a miniature, semiconductor devices, like the generator of Gunn diodes. Existing methods of inspection are divided into active (ultrasonic sensing) and passive (acoustic emission). Both methods have their advantages and disadvantages. Our group of researchers has managed to combine both methods. Develop and test remote indicator of active defects (RIAD). If the definition of apparent defects at the stage of structural failure there are two ordering methods, we study the initial stage of destruction, disorders in crystal lattices, studies of mechanical tensions inside of metals with the determination of the initial stage of destruction is just beginning. The use of the method of determination of internal defects with the help of MW until recently been controversial because of the known limitations, it was believed that this method may not reveal defects within the metal, inside of the welded joints [1]. Practice has proved that this restriction is removed when using the phenomenon discovered by our group, under the guidance of Professor V. I. Gorbunov[2]. The essence of the Gorbunov effect, discovered in 1995, lies in the fact that in the interaction of weak ultrasound (less than 20 W/cm2), with dangerous defects in the metal formed during the acts of acoustic emission, is the appearance of a variable electrical surface conductivity. The interaction of the ultrasound with the defect ranging from ten minutes to hundreds of hours. The use of microwave oscillations in interaction with variable surface conductivity becomes one of the new, combining active and passive methods of nondestructive testing.