Abstract
The two basic methodologies for the laboratory
testing of aeolian vibration dampers described in IEEE Std 664-
1993 are reviewed under the aspect of mechanical impedance
relationships. The results of both methodologies - test of a
vibration damper using a conductor span in resonant vibration
and forced response test on a shaker - otherwise not comparable
can then be set in relation to each other. Experimental results
are presented to give evidence to that approach. Moreover, an
experimental method is described for determining power flow
on a laboratory conductor span. The vibration amplitude is
measured at two arbitrary locations along the span. By digital
signal processing it is possible to determine separately the
A amplitudes of the waves travelling forward and backward along
•the span. With both amplitudes known the net power flow can
be computed.
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