Szukana fraza: [Abstract = "Four functionally graded plates\-Al\/Al2O3, Al\/ZrO2, Ti\?6Al\?4V\/Aluminium oxide, and SUS304\/Si3N4 are considered in the study, and their results are obtained so that the right choice can be made in applications in high temperature environment and in reducing the vibration amplitudes in applications such as aircrafts, rockets, missiles, etc. Numerical results for the natural frequency and harmonic response amplitude are presented. Results are compared and validated with available results in the literature. Effects of boundary conditions, material and damping on natural frequency and harmonic response of the functionally graded plates are also investigated."]