Evaluating the Stability of a Metric for Determining the Health of Armor Plates
ARMY TANK AUTOMOTIVE RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
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A method for evaluating the stability of a metric for determining the health of armor plates is presented. The metric is based on the following basic premise The amplitudes and locations of the major vibrational modes of an undamaged armor plate constitute a basic signature of the armor plate. Damaging the armor plate should cause changes to both the amplitude and position of the significant vibrational modes. A metric has been developed to exploit these changes in order to distinguish between an undamaged and a damaged plate.