Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back The rod sizes diagnosis by the natural frequencies A.M. AKHTYAMOV The formulae of identification of prismatic rod sizes from three natural frequencies (some from frequencies spectra of longitudinal vibrations and bending vibrations) are obtained. Analogies formulae are found for rods with triangle and ellipse cross-sections. The corresponding example is reduced. Key words: inverse problem, rod, natural frequencies, diagnosis. E-mail: akhtyamovam@mail.ru. Pp. 51-52