08-16-2017, 09:39 PM
This seminar presents the manufacturing processes of thermoplastic structures including piezoceramic patches (PZT). The objective of the study reported here was to find a trade-off between the manufacturing conditions and the thermal endurance of the PZT patches. We studied the influence of high temperatures on the PZT efficiency during manufacturing. Two processes were considered: injection molding and thermoforming. The studied object consists of a polypropylene plate containing a PZT patch integrated at different positions. On the one hand, we simulated with ANSYS the thermal transient effects to study the PZT cooling according to the time of its exposure to heat for different fabrication cases and with different manufacturing processes. On the other hand, the loss in PZT generated voltage according to the temperature increment was measured by thermo-mechanical experiences using a dynamical-mechanical analysis machine (DMA) connected to an acquisition chain