p razi - M.Sc in mechanical eng
s moradi - assistant professor
L fatahi - M.Sc in mechanical eng

A non - destructive practical method to locate a crack in short beams is established by usnig modal sensitivity concept and frequenty data. The timoshenko beam theory is used , taking into account the effects of rotary inertia andshear deformation.

crack detection, modal sensitivity, frequenvy data , short beam.