Turbine blade vibration can be caused by numerous sources, but comes primarily from non-uniformities in the flow path. The frequency of excitation from these sources occurs at harmonics of the operating speed. As turbine blades are very flexible members, a number of their natural frequencies can be in the region of nozzle excitation frequencies. When the frequency of any of these harmonics coincides with one of the several natural frequencies, resonance takes place. The stress during this resonant blade vibration is directly related to the excitation force and the damping present in the system. The usual approach adapted for the reduction of the vibratory stress in turbine blades is to introduce dampers in the form of damping pins, damping wire and lacing wire. However, a poorly designed and assembled damper may prove to be inadequate in reducing the vibratory stress and hence its damping characteristics should be established. The paper presents an experimental method to determine the damping ratio for these configurations under rotating conditions and demonstrates the utility of measured damping values to calculate analytically the magnitude of the resonant stress.