NUMERICAL ANALYSIS OF THE PROPAGATION CHARACTERISTICS OF STONELEY WAVES AT AN INTERFACE BETWEEN MICROSTRETCH THERMOELASTIC DIFFUSION SOLID HALF SPACES

Abstract

THIS PAPER IS CONCERNED WITH THE STUDY OF PROPAGATION OF STONELEY WAVES AT THE INTERFACE OF TWO DISSIMILAR ISOTROPIC MICROSTRETCH THERMOELASTIC DIFFUSION MEDIUM IN THE CONTEXT OF GENERALIZED THEORIES OF THERMOELASTICITY. THE FREQUENCY EQUATION OF STONELEY WAVES IS DERIVED IN THE FORM OF A DETERMINANT BY USING THE BOUNDARY CONDITIONS. THE DISPERSION CURVES GIVING THE PHASE VELOCITY AND ATTENUATION COEFFICIENTS WITH WAVE NUMBER ARE COMPUTED NUMERICALLY. NUMERICALLY COMPUTED RESULTS ARE SHOWN GRAPHICALLY TO DEPICT THE DIFFUSION EFFECT ALONGWITH THE RELAXATION TIMES IN MICROSTRETCH THERMOELASTIC DIFFUSION SOLID HALF SPACES FOR THERMALLY INSULATED AND IMPERMEABLE BOUNDARIES, RESPECTIVELY. THE COMPONENTS OF DISPLACEMENT, STRESS, COUPLE STRESS, MICROSTRESS, AND TEMPERATURE CHANGE ARE PRESENTED GRAPHICALLY FOR TWO DISSIMILAR MICROSTRETCH THERMOELASTIC DIFFUSION HALF-SPACES. SEVERAL CASES OF INTEREST UNDER DIFFERENT CONDITIONS ARE ALSO DEDUCED AND DISCUSSED.