Q&A: Preferred phased array technique, shear wave tip diffraction or amplitude drop sizing?

See presentation: slidesha.re/1nK...
Question: For precision sizing of weld flaws using OmniScan phased array inspection, which is the preferred technique: Shear wave tip diffraction or amplitude drop sizing?

Answer: The decision to use shear wave tip diffraction or amplitude drop sizing is dependent on the flaw type, size, and orientation. In general, if the flaw is larger than the beam size and is near perpendicular to the beam as is typical in side wall lack of fusion, amplitude drop sizing will produce most accurate results. If the flaw is smaller than the beam size such as a crack ligament then tip diffraction will be most accurate.
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[@EVIDENTIndustrial]

In our Video of the Week, we're answering a user question, "For precision sizing of weld flaws using OmniScan phased array inspection, which is the preferred technique: Shear wave tip diffraction or amplitude drop sizing?" bit.ly/1rZ10AG

[@Hondasrock87]

He sounds like the guy from all the Khan academy videos. Good info thank you.

[@ThangnguyenducNDT-inspector]

i liked it technique, thanks Olympus NDT :)

[@Sonic_Rider2]

Scanning dB didn't drop ?? Interpreted on
Ref dB+scanning dB??

[@mohamedelyamany3023]

please, have a video like that Explain Slag, Porosity, root concavity, root undercut, cap undercut, cluster porosity

[@straussbmx]

If this is a fabricated test piece, I'm sure you have the data sheet for the indications and know the true origin of the defects. However, if this was a weld that has been in service, and without knowing a detailed history of the service, I would have called the second indication porosity. Was this data collected from a test piece or in service weld? Hmmm...

[@giangnamnguyen1506]

Same as me, i thought it was a cluster of porosity until he said it's "Thermal .... Crack". Hope to get his explanation about this case?

[@tarcisiofneto]

Great Video!

[@ritzwebceo529]

GreatPresentation ! I am interested to become PHASED ARRAY INSPECTOR who is the approved trainer certifier kindly give me feedback!

[@하하하허허허-l1z]

I love topaz

[@nasuredeena2001]

Very useful video