Semnan University Press Journal of Modeling in Engineering 2008-4854 13 43 2015 12 22 Modelling Of Phased Array Technique To Propagation Specific Mode Of Ultrasonic Waves In Single And Multi-Layer Plates Modelling Of Phased Array Technique To Propagation Specific Mode Of Ultrasonic Waves In Single And Multi-Layer Plates 1 14 1735 10.22075/jme.2017.1735 FA Amin Mirzakhani Nafchi Journal Article 2017 01 28 In this paper, the propagation of ultrasonic guided wave in the isotropic single-layer and multi-layer plate with the assumption that layers are fully connected to each other and top and bottom surfaces of plate are free stress, are investigated and the dispersion curves, including diagrams of frequency spectrum, phase velocity and group velocity for single-layer and multi-layer can be extracted. The next, using the obtained dispersion curves how to excitation a specific mode at a probe frequency for single-layer plate and multi-layer plate using the phased array technique to be paid and graphs of emission angle versus frequency for single-layer plate and multi-layer plate are plotted and results are compared with each other. In this paper, the propagation of ultrasonic guided wave in the isotropic single-layer and multi-layer plate with the assumption that layers are fully connected to each other and top and bottom surfaces of plate are free stress, are investigated and the dispersion curves, including diagrams of frequency spectrum, phase velocity and group velocity for single-layer and multi-layer can be extracted. The next, using the obtained dispersion curves how to excitation a specific mode at a probe frequency for single-layer plate and multi-layer plate using the phased array technique to be paid and graphs of emission angle versus frequency for single-layer plate and multi-layer plate are plotted and results are compared with each other. https://modelling.semnan.ac.ir/article_1735_ead2f12a179f6cdf2bec54a8ea61196b.pdf