DEFINITION OF SPEED OF THE BASIC TYPES ACOUSTIC WAVES IN METALS BY MEANS ADDED SENSOR
The method of use of the added sensor of surface waves on the basis of elektromagnetic-acoustic meander converters for definition of speeds of surface, longitudinal and transverse waves in metals is offered. The method is applicable on samples with plane-parallel borders at unilateral access to a product. All three speeds are defined for one installation of the sensor on a surface of the sample. Problems of exact measurement of base of the sensor and time readout of the accepted impulses are solved. It is shown on examples that accuracy of definition of speeds of a sound can be not worse than 0,5 %.