A method for detecting damage in a component of a rotary machine, the method comprising: collecting, via one or more sensors (52, 54), vibration data relating to the component; identifying at least one low-energy region within the vibration data; wherein the vibration data comprises at least one high-energy region and the at least one low energy region, wherein kinematic information is utilized to avoid energy content from components operating normally from being assigned to the at least one low-energy region to thereby extract the desired energy of damaged components for the at least one low-energy region; identifying energy of at least one harmonic series or sideband series within the at least one low-energy region indicative of a damaged component; identifying energy within the at least one low-energy region excluding the energy of the at least one harmonic series or sideband series; determining at least one damage ratio based on at least one region damage value; calculating a damage factor of the component as a function of, at least, the at least one damage ratio; and comparing the damage factor to a predetermined damage threshold, wherein a damage factor exceeding the predetermined damage threshold is indicative of the damaged component; wherein determining at least one damage ratio based on the at least one region damage value further comprises: determining an average amplitude of the energy of at least one harmonic or sideband series within the at least one low-energy region indicative of the damaged component; determining an average amplitude of the energy within the at least one low-energy region excluding the at least one harmonic series or sideband series; determining at least one amplitude ratio by dividing the average amplitude of the energy of at least one harmonic or sideband series within the at least one low-energy region indicative of the damaged component by the average amplitude of the identifying energy within the at least one low-energy region excluding the at least one harmonic series or sideband series; and, subtracting one from the at least one amplitude ratio to obtain the at least one region damage value. collecting, via one or more sensors (52, 54), vibration data relating to the component; identifying at least one low-energy region within the vibration data; wherein the vibration data comprises at least one high-energy region and the at least one low energy region, wherein kinematic information is utilized to avoid energy content from components operating normally from being assigned to the at least one low-energy region to thereby extract the desired energy of damaged components for the at least one low-energy region; identifying energy of at least one harmonic series or sideband series within the at least one low-energy region indicative of a damaged component; identifying energy within the at least one low-energy region excluding the energy of the at least one harmonic series or sideband series; determining at least one damage ratio based on at least one region damage value; calculating a damage factor of the component as a function of, at least, the at least one damage ratio; and comparing the damage factor to a predetermined damage threshold, wherein a damage factor exceeding the predetermined damage threshold is indicative of the damaged component; wherein determining at least one damage ratio based on the at least one region damage value further comprises: determining an average amplitude of the energy of at least one harmonic or sideband series within the at least one low-energy region indicative of the damaged component; determining an average amplitude of the energy within the at least one low-energy region excluding the at least one harmonic series or sideband series; determining at least one amplitude ratio by dividing the average amplitude of the energy of at least one harmonic or sideband series within the at least one low-energy region indicative of the damaged component by the average amplitude of the identifying energy within the at least one low-energy region excluding the at least one harmonic series or sideband series; and, subtracting one from the at least one amplitude ratio to obtain the at least one region damage value. determining an average amplitude of the energy of at least one harmonic or sideband series within the at least one low-energy region indicative of the damaged component; determining an average amplitude of the energy within the at least one low-energy region excluding the at least one harmonic series or sideband series; determining at least one amplitude ratio by dividing the average amplitude of the energy of at least one harmonic or sideband series within the at least one low-energy region indicative of the damaged component by the average amplitude of the identifying energy within the at least one low-energy region excluding the at least one harmonic series or sideband series; and, subtracting one from the at least one amplitude ratio to obtain the at least one region damage value.