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Structural Health Monitoring with Piezoelectric Wafer Active Sensors, 2nd Edition by Victor Giurgiutiu

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5.5 Torsional Waves in a Shaft

Consider a uniform shaft of length l, mass torsional inertia per unit length ρI0image, torsional stiffness GJimage, undergoing torsional motion of displacement ϕ(x,t)image as shown in Figure 5.17a. An infinitesimal shaft element of length dx is subjected to the action of torsional moments (twisting moments or torques), ...

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