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

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

See presentation: http://slidesha.re/1nK8RkP

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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