NDT Services
Ultrasonic Thickness Testing
Ultrasonic thickness testing uses high-frequency sound waves to precisely measure material thickness from one side, essential for corrosion monitoring and equipment integrity programs.
An ultrasonic transducer emits a pulse of high-frequency sound into the material. The pulse travels through the material, reflects off the back wall, and returns to the transducer. The instrument measures the time-of-flight and calculates the material thickness using the known sound velocity. This allows precise thickness measurement from one side of the component.
We use advanced digital ultrasonic thickness gauges with data logging capabilities. Our equipment handles a wide range of materials and thicknesses, from thin-wall tubing to heavy vessel shells. Specialized high-temperature transducers allow measurements on operating equipment without shutdown when possible.
Primary applications include corrosion monitoring programs for tanks, pressure vessels, and piping systems; remaining life assessments; minimum thickness verification for code compliance; and pre-purchase equipment evaluations. We support API 510, API 570, API 653, ASME, and NBIC inspection programs.
We establish and maintain thickness measurement location (TML) grids for ongoing corrosion monitoring. Data is recorded, trended, and compared against previous surveys to calculate corrosion rates and predict remaining service life. All data is available through our digital client portal.
Learn how sound waves reveal what's hidden beneath the surface.