Download MX2 Training Program 14D Phased Array Analysis-Depth Height Sizing PDF

TitleMX2 Training Program 14D Phased Array Analysis-Depth Height Sizing
TagsAngular Resolution Diffraction Optics Electromagnetic Radiation Applied And Interdisciplinary Physics
File Size1.1 MB
Total Pages15
Document Text Contents
Page 2



OmniScan MX2 Training – Analysis – Flaw Depth\Height Sizing Cursors

 In a typical weld inspection, flaw depth and height sizing is performed on the UT axis
using the A-scan, B-scan, and S-scan.

 The three cursors used for flaw depth and height sizing are:
 –  Data cursor. Used to visualize the A-scan and S-scan at a given position on the scan axis.

 –  UT axis reference cursor. U(r)

 –  UT axis measure cursor. U(m)

Reference cursor

Measure cursor

 U 

 a
x
i   s

 U 

 a
x
i   s

Reference cursor

Measure cursor

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OmniScan MX2 Training – Flaw Depth\Height Sizing – Angle Resolution

 The ability to both size and characterize flaws is dependent on the on the
inspection strategy with regard to probe frequency, angle resolution (.5, 1, 2
degrees), probe aperture, beam focus (Near field), UT axis point quantity.

 This is especially important in a line scan from one index position where the probe
cannot be skewed and repositioned for flaw signal optimization.

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OmniScan MX2 Training – Analysis – Flaw Depth\Height Sizing cont.

 Similarly to length sizing, where precision depth and height sizing is required, use
of TOFD to compliment amplitude based phased array inspections is extremely
helpful when the probe cannot be skewed and repositioned for signal
optimization due to the one line scan acquisition.

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