Accession Number : ADA306488

Title :   Vibratory vs. Electromagnetic Waves as Used in an Analysis of a Gas Turbine Engine.

Descriptive Note : Final rept. 30 Jun 95-1 Jan 96,

Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Korjack, Thomas A.

PDF Url : ADA306488

Report Date : MAR 1996

Pagination or Media Count : 22

Abstract : The kinematics and energy balances of wave propagation occurring in a gas turbine engine are investigated to show a similarity of mathematical relationship between sonic and electromagnetic waves. Transverse electric and magnetic waves are shown to be similar in nature to viscoelastic SH waves with respect to a plane of symmetry in a monoclinic medium. The Maxwell constitutive model is related to the Maxwell equations in electromagnetics. It was confirmed that a direct similarity exists with particle velocity and magnetic field, electric field with stresses, permittivity and compliance as well as conductivity with viscosity and permeability with material density.

Descriptors :   *ACOUSTIC WAVES, *ELECTROMAGNETIC WAVE PROPAGATION, *MAXWELLS EQUATIONS, KINEMATICS, STRESS STRAIN RELATIONS, MATHEMATICAL MODELS, MAGNETIC FIELDS, VIBRATION, VISCOELASTICITY, ELECTRIC FIELDS, ENERGY TRANSFER, GAS TURBINES, PARTIAL DIFFERENTIAL EQUATIONS, TRANSVERSE WAVES, PERMEABILITY(MAGNETIC), VISCOSITY, SOUND PRESSURE, ACOUSTIC FIELDS, STRESS WAVES.

Subject Categories : Acoustics
      Electricity and Magnetism
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE