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A CBT system for system dynamics and control engineering is presented and an introduction into the related educational aspects, the elements and their realisation is given. The system is based on multimedia web components, which integrate the MATLAB/MAPLE V system for calculations in the background. CACSD operation is completely hidden from the learner, which can concentrate on the tutorial, exercises...
In this paper, numerical optimisation in combination with a suitable parametrisation of all stable closed-loop systems is proposed as a tool for control structure selection. The key benefit is that the suitability of a control structure can be assessed without a priori information about the desired closed-loop behaviour or the controller structure. Thus, it constitutes an effective tool to explore...
The influence of shear on combined filler systems containing multi-walled carbon nanotubes (MWNT) and carbon black (CB) in polycarbonate (PC) melts was investigated by time-resolved combined rheological and electrical measurements. Samples with different MWNT/CB ratios and total carbon filler contents (0.25–10 wt%) were studied. The morphology of the filler network was analyzed by TEM and SEM in charge...
Dispersion, distribution, and alignment of carbon nanotubes (CNT) in polycarbonate (PC) composites are quantified by means of statistical analysis of transmission electron microscopy (TEM) images. The analysed images originate from samples with 0.875 and 2wt% CNT, processed by compression and injection moulding, respectively. The composites exhibit different microstructures with different electrical...
A range of multi-wall carbon nanotubes and carbon nanofibres were mixed with a polyamide-12 matrix using a twin-screw microextruder, and the resulting blends spun to produce a series of reinforced polymer fibres. The aim was to compare the dispersion and resulting mechanical properties achieved for nanotubes produced by the electric arc and a variety of chemical vapour deposition techniques. A high...
Mathematical formalism and applications of the movable cellular automata (MCA) method are presented for solving problems of physical mesomechanics. Since the MCA is a discrete approach, it has advantages over that of the finite element method (FEM). Simulation results agree closely with the experimental data. The MCA approach cab solves mechanical engineering problems ranging from those in material...
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