Phased array ultrasonic testing presentation

Phased array ultrasonic testing presentation

1. PHASED ARRAY ULTRASONIC TESTING 22/07/2024

2. CONVENTIONAL UT Vs PHASED ARRAY With a conventional probe to change the sound angle we must change to a different probe or wedge. With a phased array system the sound angle can be changed electronically

3. CONVENTIONAL UT Vs PHASED ARRAY To focus we must use a lens or curved element. To change the focus we must change the probe. The focal point can also be changed electronically

4. CONVENTIONAL UT Vs PHASED ARRAY To scan the volume of a part we must physically move the probe. Physically movement of the probe not required to cover entire thickness

5. Phased arrays Concept A mosaic of transducer elements in which the timing of the elements' excitation can be individually controlled to produce certain desired effects, such as steering the beam axis or focusing the beam. Phased array technology is the ability to modify electronically the acoustic probe characteristics Probe modifications are performed by introducing time shifts to individual elements of an array probe

6. Phased Array Scanning Types Linear Electronic Scan The movement of the acoustic beam is along the axis of the array, without any mechanical movement. The beam movement is performed by time multiplexing of the active elements. A rrays are multiplexed using the same focal law.

7. Phased Array Scanning Types Sectorial Scan The ability to scan a complete sector of volume without any probe movement. Useful for inspection of complex geometries, or geometries with space restrictions. Combines the advantages of a wide beam and/or multiple focused probes in a single phased array probe.

8. Weld coverage Weld inspection PA probe in order to cover complete weld volume. 1 PA probe on each side of the weld

9. Data Display Traditional A-Scan (depth & amplitude) S-Scan (Section view) Volumetric location, depth, height C-Scan (Top view) Length, location, width B-Scan (End view) Length, location, depth

10. Defect Detection Index axis Scan axis VC-TOP(C) VIEW Index axis Scan axis Top View

11. Defect Detection Index axis Scan axis VC-TOP(C) VIEW Index axis Scan axis Top View

12. Defect Detection

13. Defect Detection CRACK Radiography Phased Array technique

14. Defect Detection LACK OF ROOT PENETRATION Radiography Phased Array technique

15. Defect Detection SIDE WALL LACK OF FUSION Radiography Phased Array technique

16. Defect Detection SLAG INCLUSIONS Radiography Phased Array technique

17. Defect Detection POROSITY Radiography Phased Array technique

18. Selection Of Scanners Depends on the following job parameters Job type (Pipe / Vessel/plate) Job Conditions (Diameter & thickness of the pipe, accessibility) Scanning requirement (Semi automated / Manual)

19. Advantages of Phased Arrays Detection: Capable to detect the defects with random orientations using a single probe. Characterization: Easier and precise defect characterization and sizing. Speed : scanning with phased arrays is much faster than single-probe conventional mechanical systems, at the same time offering better coverage. Recording : Inspected data is encoded and stored digitally for future use. Conventional UT Probe Phased Array Probe

20. Site Requirements 20 © - Copyright Bureau Veritas Client shall provide Job details (WPS, OD & Thickness details) Longitudinal or spiral welds must be ground flush a minimum of 250 mm on the outside and a minimum of 100 mm on the ID side on each side of the weld from circumferential weld (exact length to be defined). Neither coatings nor weld splatters are to be present up to (min) 250 mm on either side of circumferential & longitudinal welds for the scanning area. Circumferential clearance between pipes shall be around 300 mm. Temperatures within 55 to 60 degree Celsius are acceptable. C lean, debris free fresh water for Inspection as couplant Facility to store our equipment and power to keep battery charging

21. Thank you