id	keyword
fis-3550	damage
fis-3550	pso
fis-3550	optimization
fis-3550	damage detection
fis-3550	objective
fis-3550	swarm
fis-3550	algorithm
fis-3550	particle
fis-3550	function
fis-3550	modal
fis-3550	swarm optimization
fis-3550	methods
fis-3550	structures
fis-3550	eng
fis-3550	step
fis-3550	updating
fis-3550	problems
fis-3550	study
fis-3550	frequencies
fis-3550	ghannadi
fis-3550	review
fis-3550	identification
fis-3550	mode
fis-3550	results