Abstract

This work provides an ultrasonic measurement model using line focused transducers to predict flaw responses in cylindrical components for evaluating the detection ability of this kind of transducer. The wave beams in cylindrical components radiated by line focused transducers are modeled using a multi-Gaussian beam model with consideration of effects of wave mode conversion and curvatures. Such a model is developed by combining the system function, the wave beam model and a Kirchhoff approximation flaw scattering model. The system function with a line focused transducer is characterized using reference signals by taken into account for the effects of diffraction and attenuation. One advantage of the proposed method is that the system function can be calibrated at different distances. The proposed model is certified from good agreement between the experimental and predicted signals of side drilled holes. In addition, the discussions on the effects of curvatures and wave mode conversion are helpful for guidance of nondestructive test cylindrical components using line focused transducers in practical application.

How to Cite:

Wang, W. ., Zhang, S. . & Li, X. ., (2019) “Modeling flaw pulse-echo signals in cylindrical components using an ultrasonic line focused transducer”, Review of Progress in Quantitative Nondestructive Evaluation .