Analytical, experimental and numerical analysis of stability and degradation of smart structure for cubic reconnaissance satellites

Piezoelectric materials are widely used as smart structure in cubic reconnaissance satellites because of their sensing, actuating and energy harvesting abilities. In this research work analytical model is developed under specified mechanical thermal shocking conditions, a special circuit and apparatus is designed for experimentation which is based on inverse piezoelectric effect using equivalent circuit method to find the relationship between resistance and peak to peak voltage of Lead Zirconate Titanate (PZT-5A4E) for cubic reconnaissance satellites by shocking it at variable frequencies and at variable resistances under various mechanical thermal shocking conditions and numerical simulations are carried out at various mechanical loading to determine the accumulative effect of the specified conditions. This model provides novel mechanism for characterizing smart structures using stability and Mechanical Quality Factor is validated by Nyquist Theorem and RH Table. It was found that resonance frequency is most critical element for degradation of a smart structure but it can be prevented by adding resistance to the system by decade box. From experimentation and simulation the optimum resistance at variable frequency and temperature is predicted which has various applications in field of smart structures for cubic reconnaissance satellites. The response of the analytical calculations to the experimental and numerical calculations is within good agreement.