Comparison of Calculated Ultrasonic Scattering with Experimental Observations in Welded Samples with Various Defects
The development of analytical computer models to predict ultrasonic scattering from individual, small flaws in components with complex geometries [1,2] has undergone considerable work. These models, known as the ultrasonic measurement model, are based on the Gauss-Hermite beam model  and account for the effects of diffraction and refraction of the ultrasonic beam, mode conversion at the water-solid interface and material attenuation. Potential uses include increasing confidence in obtaining a reasonable probability of detection of a critical flaw, assisting in developing a scan plan for a particular geometry and combination with a computer aided design package as an additional design aid.
KeywordsMeasurement Model Multiple Flaw Multiple Crack Ultrasonic Beam Hydrogen Attack
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