Non-destructive testing of wood using ultrasonic technique
by G.H. Agrawal, N.K. Choudhari
International Journal of Signal and Imaging Systems Engineering (IJSISE), Vol. 3, No. 3, 2010

Abstract: Non-Destructive Testing (NDT) identifies the physical and mechanical properties of material without altering its end-use capabilities. NDT for wood is used to measure natural and environmentally induced irregularities to determine its mechanical properties. This paper discusses the basic operation, design and experimental technique for contact-type ultrasonic NDT method to find the wood properties. The experiment was performed using two piezoelectric ultrasonic transducers. The received time signal was analysed by getting the Fast Fourier Transform (FFT) and Power Spectral Density (PSD) using MATLAB and results are shown. The wood sample was also applied with compressive test (Destructive Testing) to find the strength of the wood sample.

Online publication date: Mon, 15-Nov-2010

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