Ultrasonic Pulse Velocity (UPV) is a non-destructive testing method used to assess the quality and integrity of concrete and other materials by measuring the speed of ultrasonic pulses passing through the material. The test involves transmitting high-frequency sound waves through the specimen and recording the time it takes for the pulses to travel from one end to the other. Higher velocities typically indicate denser, more homogeneous, and less cracked materials, whereas lower velocities suggest the presence of flaws, cracks, or voids that compromise structural integrity. UPV is commonly used for quality control, assessing internal defects, and estimating the strength of concrete in construction projects.