3 Mechanical Environment Test Specifications Derived from Equivalent Energy in Fixed Base Modes 37 Fig. 3.9 RC accelerometer motion location 1 & 2 with inputs derived from high damping (HDI) and no damping (LDI) applied to the component with no damping (LDC) and high damping component (HDC) respectively To determine the potential misalignment in testing when dealing with unit to unit variability, the input derived from the no damping case was applied to the high damping test article, and the input derived from the high damping case was applied to the no damping test article. The accelerometer responses, Sxx, are compared to the original MATV measurements in Figs. 3.9 and 3.10. As can be expected, when the low damping inputs are used to drive the high damping component, the responses tend to under shoot the MATV responses, and when the high damping inputs are used to drive the low damping component, the responses tend to over shoot the MATV responses. To guarantee conservatism, the input with the largest value at each
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