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An experimental study is presented of the dynamic behavior of the impacting droplet of magneto-rheological suspension under applied magnetic fields. Effects of magnetic fields on the impact phenomena between a MR fluid droplet and paper on the hard rubber mat were revealed with a three-dimensional motion analysis system. In case of perpendicular magnetic field to a target surface, the MR fluid droplet did not collapse completely by its impact, but MR fluid spikes were formed by the magnetic field. In case of parallel magnetic field to a target surface, the MR fluid droplet showed complicated deformation. In case of strong parallel field, the MR fluid droplet showed breakup into few droplets.

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