The basic idea of the proposed vibration-based damage detection method is that a damage as a combination of different failure modes in the form of loss of local stiffness in the structure alters its dynamic characteristics, i.e., modal frequencies, mode shapes, and modal damping values. The present study focuses on the identification of damage location and size in a laminated composite beam by extracting mode shape information obtained from vibration experiments. A low-velocity impact is used in order to introduce damage in a beam. The modal frequencies and the corresponding mode shapes are obtained by using a scanning laser vibrometer with a piezoelectric actuator.