Transcription of Shock’n on Shakers - Sound and Vibration
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Shock’n on Shakers - Sound and Vibration
12 Sound AND Vibration /SEPTEMBER 2003 Shock n on ShakersGeorge Fox Lang, Associate EditorElectrodynamic and hydraulic Shakers have become a com-monly used platform for shock testing. This article reviewscurrent controller technology to safely and reliably compen-sate for the mechanical limitations of both types of shakersin reproducing desired shock hydraulic and electrodynamic Shakers have be-come the preferred test platforms for modest shock tests. Whiledrop-test (and other) facilities remain necessary for the simu-lation of extreme shock pulses, the controlled shaker hasproven very cost effective for more routine product qualifica-tion and seismic evaluation work. Modern DSP shaker control-lers now do an outstanding job of reproducing desired transientpulses safely, reliably and repeatably. Their use saves the enor-mous time of iteratively designing mechanical drop-targets toprovide a required shock profile. One now merely keys in orselects the desired acceleration-versus-time shock profile or itsshock response spectrum (SRS) and runs the , a shaker presents some physical barriers to shocktesting.
12 SOUND AND VIBRATION/SEPTEMBER 2003 Shock’n on Shakers George Fox Lang, Associate Editor Electrodynamic and hydraulic shakers have become a com-monly used platform for shock testing.
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