SEPARABLE PHYSICAL COUPLER USING PIEZOELECTRIC FORCES FOR DECOUPLING

    公开(公告)号:US20190048914A1

    公开(公告)日:2019-02-14

    申请号:US15672651

    申请日:2017-08-09

    Abstract: A coupler for separable physically coupling together a pair of objects includes two parts, on opposite sides of a boundary, that have different piezoelectric characteristics. When an electric field is applied to the coupler parts the piezoelectric forces induce a mechanical stress that separates the parts. The parts may be made of the same or a similar material, such as a suitable ceramic material, with the different piezoelectric characteristics produced by templating the parts with different domain orientations, from different seeds, for example using a three-dimensional manufacturing processes. The coupler may be used to allow shock-free (or reduced shock) separation of parts, such as separation of stages of vehicles such as flight vehicles.

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