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The brass shim reinforcement laminated between the two piezoelectric layers is an economical approach to producing a rugged actuator
PSI-5A4E is an industry type 5A (Navy Type II) piezoceramic
It operates over a wide temperature range and is relatively temperature insensitive
the piece expands along the axis of polarization (thickness direction) and contracts perpendicular to the axis of polarization (length and width direction)
A 2-layer piezoelectric actuator produces curvature when one piezo layer expands while the other layer contracts
Piezoelectric Extending Transducer (D220-H4BR-2513XE) Model:D220-H4BR-2513XE The brass shim reinforcement laminatedA 2 layer element behaves like a single layer when both layers expand (or contract) together. If an electric field is applied which makes the element thinner, extension along the length and width results. Typically, only motion along one axis is utilized. Extender motion on the order of microns to tens of microns, and force from tens to hundreds of Newtons is typical.
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