NDT Services
UT Straight Beam
Straight beam ultrasonic testing sends longitudinal waves perpendicular to the test surface, detecting internal discontinuities like laminations, inclusions, and voids in plates, forgings, and castings.
A transducer sends a sound beam straight down (0 degrees) into the material. The beam reflects off the back wall and any internal discontinuities in between. By analyzing the timing, amplitude, and shape of the reflected signals on the A-scan display, the technician can determine the location, size, and nature of internal flaws.
Straight beam UT excels at finding laminations (planar flaws parallel to the surface), inclusions, porosity clusters, shrinkage cavities in castings, hydrogen flaking in forgings, and disbonds in clad or lined materials. It is also used for thickness measurement and back-wall verification.
Plate material verification, forging inspection, bar stock evaluation, casting examination, clad/overlay bond verification, and pre-service material acceptance testing. Also used for lamination scanning prior to nozzle and attachment weld locations per ASME code requirements.
Performed per ASME Section V Article 5, ASTM A435/A578 (plate), ASTM A388 (forgings), SA-578, and applicable project specifications. Calibration per applicable DAC or DGS methods.
Precision thickness measurement and lamination detection.