The Fabrication of Flow Conduits in Ceramic Tapes and the Measurement of Fluid Flow Through These Conduits

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Abstract
Ceramic tape and thick film technologies provide a convenient and flexible means for the fabrication of three-dimensional flow conduits integrated with sensing and actuating elements. In their pre-fired (green) state, the ceramic tapes are soft, pliable, and easily machinable. CNC, laser, or chemical machining can be used to fabricate fluid conduits. Various conduit geometries were machined ranging from straight conduit segments with various angles between them to arcs to spirals. Subsequent to the machining process, tapes with different planar features were aligned, stacked, and laminated to form complex three-dimensional flow paths. The paper describes the fabrication techniques and capabilities. Additionally, results of preliminary liquid flow measurements and simulations are reported for the pressure drop as a function of conduit geometry and flow rate in straight and L-shaped channels.

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