“…To obtain the dynamic characteristics of workpiece structures, various forms of excitation forces, including pure harmonic (Sadek and Fenner, 1973;Tlusty et al, 1974), sweep sine wave, impulse, random, actual cutting force (Moriwaki and Iwata, 1976;Lu et al, 1983), or pulse (Yuce et al, 1983), can be used. The excitation force and structure vibrations are measured during the experiment and analyzed with Fast Fourier Transformation (FFT)-based techniques (Otnes and Enochson, 1978;Broch, 1984;Herlufsen, 1985), or time-domain approaches (Eman and Wu, 1980;Kim et al, 1982;Tansel and Abdulsater, 1987;Shin et al, 1989).…”