id	keyword
alkej-778	� �
alkej-778	rayleigh
alkej-778	vol
alkej-778	frequency
alkej-778	beam
alkej-778	dunkerley
alkej-778	method
alkej-778	vibration
alkej-778	system
alkej-778	engineering
alkej-778	journal
alkej-778	shaft
alkej-778	frequencies