The aim of this study is to measure the vibration and the stresses developed in the anti-vibration rubber mounts of a generator resulted from vibration of a generator at duty cycle. This is done by measuring the acceleration of the engine case using accelerometer; piezoelectric sensor. The stresses were calculated numerically by finite element analysis using ANSYS 15.0 software package.

Homotopy perturbation method (HPM) and Runge-Kutta fourth-order method with shooting technique have been performed to investigate the presence of thermal radiation on squeezing unsteady nanofluid flow between two lateral plates. The results obtained, are found in good agreement with the previously published studies which employed Duan-Rach Approach (DRA). We found that the fluid temperature is physically decreased with an increase in thermal radiation parameter.

In the recent years, a remarkable evolution of the non-radiant wireless power transfer (WPT) system using strong magnetic resonant coupling has been observed, and it has shown more prospects for powering portable devices due to its operating range and efficiency. However, the performance of the system is adversely affected by the coil movement, which is a critical issue for high transfer efficiency. In this paper, a coupling tuning based impedance matching method is proposed to enhance and maximize the transfer efficiency of the system. The matching conditions are derived from power transfer model analysis using equivalent coil circuit model for optimum transfer efficiency. A simulation setup is developed in an electric automatic tool to testify the viability of the proposed technique, and verified against theoretical data. Applying this technique, the extracted  shows more than 9 dB improvement at both the strong and weak coupling regimes, and results transfer efficiency over 90% at close coil distance without changing the operating frequency. Compared to the conventional fixed coupling and LC circuit based matching technique, the proposed method shows efficiency enhancement about 9% - 20% at different coupling conditions.

In this paper, we consider the discrete Legendre projection methods to solve the eigenvalue problem. Using sufficiently accurate numerical quadrature rule, we obtain the error bounds for gap between the spectral subspaces, eigenvalues and iterated eigenvectors for the eigenvalue problem in norm. We also obtain the superconvergence results for eigenvalues and iterated eigenvectors in discrete Legendre Galerkin methods. Numerical examples are presented to illustrate the theoretical results.