TB 26-09 Measured Hammer-Tap Inputs
For more information, contact Joel W. Sills, Langley Research Center, joel.w.sills@nasa.gov .
An instrumented hammer test does not require an idealized single half-sine waveform. When the complete force and response are measured accurately, crest ripples and separated contacts remain known inputs. Force shape changes excitation, but does not inherently invalidate the record. Adequacy depends on measurement accuracy, bandwidth, signal-to-noise ratio, and coverage of the test objective.
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