Accession Number : AD0727458

Title :   Determination of the Energy Dissipation in Materials Associated with Steady-State Resonance Oscillations,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Tyulenev,V. N.

Report Date : 26 MAY 1971

Pagination or Media Count : 44

Abstract : A description is given of a method of studying the damping properties of machine element materials during tests on an electrodynamic vibrator. Energy dissipation can be determined by this method in specimens of materials and in machine elements of complex geometry for various vibration modes produced by the electrodynamic vibrator. The method is based on the determination of the energy absorption coefficient represented by a ratio of the energy dissipated in the element during one vibration cycle to maximum potential energy. This coefficient is obtained by measuring the ratio between the vibration amplitudes of the electrodynamic vibrator platform and the displacement amplitudes of a point on the specimen. The method is applied to steel and titanium specimens and to glass fiber reinforced plastic materials.

Descriptors :   (*TURBINE BLADES, VIBRATION), (*MATERIALS, TURBINE BLADES), OSCILLATION, RESONANT FREQUENCY, VIBRATORS(MECHANICAL), GLASS TEXTILES, TITANIUM ALLOYS, STEEL, TEST METHODS, USSR

Subject Categories : Mechanics
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE