Phased Array Ultrasonic Testing (PAUT) is an Advanced NDT technique that employs a set of ultrasonic testing (UT) probes comprised of small conventional transducer elements. Each transducer can be
Magnetic Flux Leakage Inspection
MFL probes incorporate a magnetic detector placed between the poles of the magnet where it can detect the leakage field. During inspection, a magnetic circuit of sorts forms between the part and the probe. The magnetic field induced in the part saturates it until it can no longer hold any more flux. The flux overflows and leaks out of the pipe wall and strategically placed sensors can accurately measure the three-dimensional vector of the leakage field. Because magnetic flux leakage is a vector and that a sensor can only measure one direction, any given probe must have three sensors to accurately measure the axial, radial, and circumferential components of an MFL signal.
Advantages of Magnetic flux leakage Inspection
Sizing of the defect is very limited in MFL inspection.
Fill factor should be very high compared to other technique.
Limitations of Magnetic flux leakage Inspection
One of the few methods used to inspect finned tubes.
Can be used on all ferromagnetic materials
Good sensitivity to pitting
High-speed inspection.
NFT technology uses two coils — a transmitter and a receiver. Typically, the receiver coil is close to the transmitter coil, taking advantage of the transmitter’s near-field zone —
The Remote Field Eddy Current (RFET) is a variation of Eddy Current send-receive probe technique. RFET technique allows the use of the differential- and absolute mode This technique is capable for
Tubes are found commonly in all the major sector like marine, industrial these are also asset for oil gas petroleum and other nuclear industries. Inspection of heat exchanges is crucial as it
Remote visual inspection is a non-destructive testing technique that employs the use of remotely operated cameras and crawlers in order to assess the integrity of components and infrastructure in
Internal Rotary Inspection System (IRIS) is used for inspection of tubes of heat exchangers and steam generators. The system displays circumferential cross section of tubes (wall thickness of tubes)
Long Range UT (LRUT)
Corrosion under insulationThere are certain sections of the pipelines like portions crossing under the road crossing/culverts, underground portion, where online inspection using