DEVELOPMENT OF METHODS OF THE ACOUSTIC MICROSCOPY FOR THE INVESTIGATION OF A STRUCTURE AND PROPERTIES OF SOLID-STATE MATERIALS

A scanning reflecting acoustic microscope, its use for the investigation of a structure and non-disturbing control of dielectric materials are considered in the paper aiming at the possibility investigation of the expansion of the practical application of acoustic microscopy and the increase of a class of the objects investigated. As a result the theoretical analysis of the formation of an output signal for an acoustic microscope has been held. Some new methods of its work, methods extensing essentially the diagnostic possibilities of an acoustic microscope, have been suggested. The method of diaphragmed lens for the investigation of small variations of elastic properties on a surface of a sample has been developed as well as the method of interferention bands for the determination of elastic properties of small samples and microinclusions. The paper results may find their field of application in diagnostics of solid-state materials (composites, itc.), the measurement in them of speeds of surface waves and elastic moduluses, the detection of surface defects of various naturesAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio