Embedding of MEMS Pressure Temperature Sesors in Carbon Fiber Composites: A Manufacturing Approach

摘要

In this paper embedding of surface mount pressure and temperature sensors in the Carbon fiber composites are described. A commericially available surface mount pressure and temperature sensor are used for embedding in a composite lay-up of IM6/HST-7, IM6/3501 and AS4/E7T1-2 prepregs. The fabrication techniques developed here are the focus of this paper and provide for a successful embedding procedure of pressure sensors in fibrous composites. The techniques for positioning and insulating, the sensor and the lead wires, from the conductive carbon prepregs are described and illustrated. Procedural techniques are developed and discussed for isolating the sensor's flow-opening, from the exposure to the prepreg epoxy flow and exposure to the fibrous particles, during the autoclave curing of the composite laminate. The effects of the autoclave cycle (if any) on the operation of the embedded pressure sensor are discussed.