Abstract:
Structural Health monitoring is an important area of search which finds its application in
all load carrying structures like bridges, buildings, aircrafts, submarines, and
automobiles. In order to avoid any failure in such structures many Non Destructive
Testing Techniques (NDT) are developed and a lot of research is carried in the modern
era. Damage Detection using Vibration testing parameters e.g. natural Frequency & mode
shapes is one of the most popular reliable approach for damage identification in
structures. In this study, a damage detection Techniques is proposed which uses change
in Frequency Response Function (FRF) and modal strain energy (MSE) for damage
localization and severity estimation in beam and truss like structures.This method
provides a robust approach for Structural Health Monitoring (SHM) problems as it
requires only few natural Frequencies of damaged structure to detect the damage. In the
current approach, a damage detection algorithm is developed and validated by
conducting numerical studies of a Cantilever &Fixed-Fixed beam, both noise-free and
noise-effected cases are simulated. The numerical studies reveal that proposed method is
capable of Localizing and Quantifying the Damage Accurately at reduce computational
cost.
