Ultrasonic Testing (UT) is a widely used non-destructive testing (NDT) technique that employs high-frequency sound waves to inspect and evaluate the internal structure of materials. This method is particularly effective in detecting cracks, voids, inclusions, and other discontinuities within metals, composites, and other solid materials. UT is also commonly used to measure material thickness, making it valuable for corrosion monitoring and structural assessment. It offers high accuracy, depth penetration, and the ability to provide immediate results without damaging the tested component, making it essential in industries such as aerospace, manufacturing, construction, and oil and gas.