phased array applications - ondt canada (v1)

8/7/2019 Phased Array Applications - OnDT Canada (V1)

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Phased Array

Applications


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Phased Array ApplicationsU ltrasonic phased arrays are used in a widevariety of industries where the technology hasinherent advantages. These industries include: Aerospace Petrochemical Automotive Pipe mills Steel mills

Pipeline construction Nuclear power General manufacturing, construction, and a selection of

special applications.


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Phased Array Applications All these applications take advantage of one or more of thedominant features of phased arrays: S peed : scanning with phased arrays is much faster than single-

probe conventional mechanical systems, at the same time offeringbetter coverage.

Flexibility : setups can be changed in a few minutes, and typically alot more component-dimension flexibility is available.

Inspection angles : a wide variety of inspection angles can beused, depending on the requirements and the array.

Sm all footprint : small matrix arrays can give significantly more

flexibility than conventional probes for inspecting restricted areas. Im aging : showing a true depth image of defects is much easier tointerpret than a waveform. The data can be saved and redisplayedas required.


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Aerospace Applications


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Scribe Mark Inspection ProblemD amage has been reported along fuselage skinlap joints, butt joints, and other areas of severalaircraft caused by the use of sharp tools usedduring paint and sealant removal.


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Scribe Mark Inspection Solution Advantages of ultrasonic phased array technology for scribe markdetection offers the following capabilities: Software control of beam angle, focal distance, and spot size Multiple-angle inspection with a single, small, electronically controlled,

multielement probe No paint removal necessary to carry out the inspection (huge time

savings) Sectorial scan imaging


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L anding Gear Inspection ProblemIn 2003, Northwest Airlinesexperienced two DC -9 mainlanding gear failures due tocracking in the outer cylinder

near the trunnion arm radius.Exhaustive analysis at theNTSB and Boeing- Long Beachshowed that these cracks werethe result of grain boundary

separations forming aroundinclusions in the cylinder forging over its life span.


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L anding Gear Inspection SolutionU se of sector scan capabilities allows easy coverage of this area using only one probe.Notches implemented on test samples showed clear detection.Main interest: No need to remove paint and break lines HU GE TIME SAVING!


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C omposite Radius InspectionC urved PA probe for radii inspection


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C omposite Radius InspectionInspection Properly adjusting the probe

height to the radius allows for 0 inspection of a near 90

section of the radius.

Scanning and sizing D efect sizing can be directly

obtained from the C -scan on thescan axis.

The size of the defect on the

index axis is a function of theradius of the corner, the radiusof the probe, and the depth of the defect below the surface.


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F riction Stir WeldThe friction stir welding ( F SW) techniquewas developed as a method to join materialsthat are difficult to fusion weld such as

aluminum alloys.The best method to inspect friction stir weldsis to use the ultrasonic phased arraytechnique. Because of the weld shape,raster scanning is impossible; but withphased arrays, inspection of the entire weldvolume is done in a single-pass scan.


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F riction Stir Weld SolutionO ne probe on each side of theweld for axial detection, plus athird probe for transversedetectionMotorized positioning of theprobe (weld centering)

Inspection with 65

SW and 45

SW for axial defectsInspection with 45 SW refraction angle and skewangles of -30 , 0 , and 30 for transverse defectsE

lectronic scanning of thebea m for all configurationsE ntire inspection perfor m ed asa one-line scan (up to 70 feet)Coupling is perfor m ed withlocal i mm ersion wedges


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Industrial Applications


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Pressure Vessel InspectionWeld inspection (PV200) C ombine TO F D + PA probe in order

to cover complete weld volume. 1 PA probe on each side of the weld

1 TO F D channelPA

TO F D

+

PA

=

PV 200 Inspection


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Pipe L ine InspectionPipe Wizard: Automated ultrasonic

inspection of pipelinegirth welds usingphased arrays.


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Bar and Billet InspectionLW & SW+ / SW- inspectionwith different angles from 40 to65 with the same probesHot rolled bars: surface withcalamine and straightness of 2mm/m with floating head.

High sensitivity of detection:+8 to 10dB more thanconventional performances


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F ull Body Tube Inspection SystemRotating Pipe inspection: C ontact shoes used on pipe for

high-quality coupling withwater.

U sed for high-diameter range

(from 3 in. to more than 20 in.). Adapted for various mechanical

movements. Pipe rotating on trolley with

motorized axis for end-of-tubeinspections

U se of Phased Arraytechnology to improvecoverage.


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Turbine InspectionLooking for defects with a3-D scan patternMultiple beam angles fromsingle probe

Optimized focusMuch simpler probe panassembly replacesmultiple probes with onearrayF aster: single-passinspection of complexgeometries


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T hank you!

phased array applications - ondt canada (v1)

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