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In this paper, a method based on an oscillating flow consisting of an 8 Hz vibrating flow and a constant flow used to increase the manipulation capability of particles in liquid is developed and demonstrated. The method was integrated with magnetic resonance navigation (MRN) for targeted manipulation. Micro particles encapsulating superparamagnetic nanoparticles were successfully navigated in a Y-shaped...
Faulty features extraction is an essential problem in the field of large-scale electromechanical equipment faulty diagnosis. Classical vibration faulty features extraction is based on spectral analysis method, while the wavelet transform provides a novel tool to solve this problem. In this paper, the problem of frequency band derangement inhering in redundant second generation wavelet packet transform...
This paper introduces the commonly used tracked vehicle suspension technology, and analyses the miLitary tracked vehicle suspension technology demand and its AppLication. In addition, it proposes that intelLigent suspension systems are the development trend for miLitary tracked vehicle suspension system.
For the reason of flight conditions (altitude, high humidity), the helicopter is more susceptible to icing conditions than other fixed-wing aircraft. To meet the requirements of the helicopter flying in all weather, deicing measures must be taken for the blade. There are lots of existing blade deicing methods, electro-thermal is widely used, but the loss of power is very great. With the development...
Based on Biot's wave propagation equations and boundary conditions, the Galerkin method is used to derive the u-p format finite element equation in the frequency domain by Fourier transform. The track and the attached sleepers are simplified as Euler beams resting on saturated half-space, the wave-number transform in the load moving direction is applied to reduce the three-dimensional (3D) dynamic...
This paper shows us the test of simulation part of propeller leaf at different rust damnification condition on the electromagnetic table, and got the change rule of vibration frequency which following the ratio of damnification depth, damnification length and damnification area. The test also show us that damnification area Amacr and damnification depth Hmacr has more infection to vibration frequency...
Micro-cantilever array was made by micromachining technology. Its mechanical characteristic was analyzed. A gas sensor based micro-cantilever array was presented. The different material sensing layers were fabricated on the different micro-cantilever surface respectively; the physical or chemical absorption alters the mass of micro-cantilever, accordingly, the mechanical characteristic of micro-cantilever...
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