Automated Ultrasonic Testing (AUT)
AUT inspection is a major tool for executing Risk Based Inspection (RBI) programs, Fitness-for-Service (FFS) Analysis, and remaining life assessment since it provides extremely precise data. The scheduling and planning of turnaround projects, shutdown and outage projects, and capital projects all make extensive use of these advanced non-destructive testing (NDT) inspection procedures .A variety of industrial equipment’s excellent functionality and operational safety is assured by quick, accurate automated ultrasonic inspection of small-bore piping welds in effect significantly. We offer a thorough examination of both longitudinal and transverse indications along the entire weld, including the root area.
Depending on your specific needs, our AUT professionals are available to assist you during the inspection.
AUT Inspection of Pipe Girth Welds:
The requirement to make AUT results compare perfectly to radiography inhibited initial efforts to measure porosity. In other words, it was necessary to identify the “projected area” of porosity. With AUT, however, such a quantification of the defect is not feasible. In fact, radiography is not even always used to evaluate it. It is unusual for all the experienced radiographers to agree on the classification to apply when they are shown a radiograph of a weld with porosity and asked to assess if the porosity is 3%, 4%, or 5% of the projected area. In the end, a qualitative assessment rather than a quantitative one is being made. The fundamental purpose of the zonal discrimination approach is to calculate the vertical extent of planar flaws. However, non-specular reflecting imperfections (such as porosity and slag) present a distinct problem and make it necessary to measure their vertical extent.The sum of the interference phase effects between point emitters that have disrupted a plane wave front determines the amplitude responses from porosity.
Available AUT Inspection Technologies are,
- Automated Ultrasonic Back Scatter Method
- Guided Bulk Wave technique
- Guided Wave
- Large Structure Inspection
- P Scan
- Phased Array/PAUT
- TOFD Inspection etc.