The Scattering Response of a Flat-Bottom Hole
The flat-bottom hole is one of the oldest reference/calibration standards in the field of ultrasonic nondestructive evaluation (NDE). It has been used for both calibration of ultrasonic test equipment sensitivity and for the generation of distance-amplitude correction (DAC) curves . Flat-bottom holes are also useful for equivalent flaw sizing applications since they can represent the response, at normal incidence, of ideal “perfect” scatterers, such as flat cracks.
KeywordsScattered Wave Kirchhoff Approximation Quantitative Nondestructive Evaluation Flat Crack Ultrasonic Nondestructive Evaluation
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