Detection of delamination defects in carbon fiber using ultrasonic signal processing
نویسنده
چکیده
In this work, the ultrasonic signals are modelled as a superposition of many Gaussian echoes with unknown parameters. The detection of ultrasonic echoes using Maximum A Posteriori estimation principle, based on the prior knowledge of the spectral characteristic of the ultrasonic transducer, has been used in order to estimate the unknown parameters. A simulation study validated by experimentation shows the possibilities and the robustness of this method in order to detect delamination defects. We apply the developed method to signals acquired from composite materials like carbon fiber with delamination defects.
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