Abstract
In this paper, we propose a damage identification method of laminated composite structures based on dynamic residual forces. Dynamic residual forces are evaluated using an analytical model of undamaged structures and measured vibration data of damaged structures. In the first step, a rough damage region is identified from the dynamic residual forces. Then, error vectors of the residual forces are minimized to identify the accurate location and extent of structural damage. Effect of measurement points and measurement errors on the identification results is examined through numerical examples on symmetric laminated plates.
