My project focuses on defect detection in thin plates using guided wave-phased array imaging. I worked on an algorithm based on the Full Matrix Capture-Total Focusing Method (FMC-TFM) for ultrasonic guided wave signal processing and the Virtual Array Source Aperture (VASA) methodology to enhance defect detection accuracy. The project involved the selection of optimum parameters such as mode and frequency, conducting sensitivity and resolution analysis, and validating results on a steel plate for effective defect visualization and characterization.