Ultrasonic Flaw Inspection
A surface examination method
Ultrasound is an excellent technology for the detection of defects in materials because it is extremely sensitive to small changes or discontinuities in the materials. Ultrasonic can be used to detect defects such as …
In addition, ultrasonic technology can be used to characterize the defects present in a test piece by enabling the estimation of quantities such as the length of inclusions, crack lengths and depths, percent porosity, and the degree of disbond. Many components lend themselves to ultrasonic testing including castings, forgings, powdered metals, and sprayed coatings. As the technology develops, ultrasound is becoming useful on components of increasingly complex geometry.
UT Shear Wave in lieu of Radiography for Weld Inspection\
Radiography is commonly used to inspect welds that are fabricated as per a specific ASME code. Radiography is a reliable method but it has one major limitation; all work in the inspection area has to be stopped and the workers vacated to avoid x-ray exposure. This can impair work progress and delay the job. UT shear wave in lieu of radiography is quite attractive as it does not affect any work being done in the vicinity. Some major companies have chosen UT Phased Array Shear Wave in lieu of Radiography. UT inspection is done strictly as per the applicable code.