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Module 5: Experimental Modal Analysis for SHM

Lecture 39: Composite plates with 90^o plies

	Introduction The frequency modes compared are first bending in longitudinal direction ( B1 ), second bending in longitudinal direction ( B2), bending in both longitudinal and transverse directions ( B32 ) and first torsion mode ( T1). The mode shape for the B32 mode is shown in Fig. 39.1. Figure 39.1: Mode shape for the B32 mode