PRIMARY ACOUSTIC TRANSFORMER FOR CONTACT-LESS NON-DESTRUCTIVE CONTROL OF COATINGS

摘要

Primary acoustic transformer for contact-less and non-destructive control of coatings has body fixed in ring with rollers in which hammer is placed, for excitation of acoustic vibrations, and truncated hollow puramid that is with basis fixed on ring and at upper edge of which receiving pieso-plate is placed, this in dimensions is equal to area at the upper cut of pyramid. Cut hollow pyramid is arranged with multi-stage facets and has in it second like pyramid that is placed at axis with the first one through in upturned position. On its basis at the top hammer is placed, this is arranged as excitation pieso-plate that by area is equal to area of the basis.