Nanostructured blends with prescribed macromolecular structure and properties have been successfully prepared via in-situ cationic polymerization of bio-based rung oil in the presence of poly(Ε-caprolactone) as a cry...
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ISBN:
(纸本)9781634397179
Nanostructured blends with prescribed macromolecular structure and properties have been successfully prepared via in-situ cationic polymerization of bio-based rung oil in the presence of poly(Ε-caprolactone) as a crystallizable, biodegradable, and biocompatible polymer. Different degrees of miscibility, morphology, and crystallization behavior have been observed as a function of blend composition. The isothermal crystallization kinetics of PCL/tung oil blends were investigated as a function of composition at different crystallization temperatures and analyzed on the basis of Avrami approach. A substantial decrease in the isothermal crystallization kinetics was observed as the concentration of PCL increased in the blends up to 30 wt.%. In a contrast, for 50 wt.% PCL blend, a considerable increase in the crystallization kinetics was detected.
Uniform and multilayered nanocomposites are of growing interest due to their desirable mechanical properties and their performance under high stress, wear, and impact conditions. Composite structures offer an opportun...
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The reliability of Sheet Moulding Composite (SMC) has been analysed by means of mechanical static and fatigue tests. SMCs showed substantial in-plane anisotropy either in terms of stiffness or strength reflecting the ...
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This work reports the synthesis of apatite-type lanthanum silicate powders with nominal composition La10Si6O27 by an innovative chemical route which combines co-precipitation and sol-gel approaches. The herein propose...
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Uniform and multilayered nanocomposites are of growing interest due to their desirable mechanical properties and their performance under high stress, wear, and impact conditions. Composite structures offer an opportun...
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Si wafer was mechanically machined at nano scale based on quantitative determination of the ductile/brittle-machining transition point in this study. It was possible to determine the transition point by investigating ...
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ISBN:
(纸本)9780956679031
Si wafer was mechanically machined at nano scale based on quantitative determination of the ductile/brittle-machining transition point in this study. It was possible to determine the transition point by investigating the abnormal decrease of the cutting force. The machined patterns had sharp V-shapes, which pattern is hard to machine using lithography technology;the patterns had no brittle fractures nor any burrs.
In this paper we discuss issues related to the design of clusterwheel inverted pendulum balancing machines, with a particular focus on the choice of the number of wheels in the cluster. This class of vehicles holds th...
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ISBN:
(纸本)9781479973989
In this paper we discuss issues related to the design of clusterwheel inverted pendulum balancing machines, with a particular focus on the choice of the number of wheels in the cluster. This class of vehicles holds the promise of incorporating the inherent compliance of a two-wheeled balancing vehicle, the stability of a four-wheeled vehicle when desired, and the capability of legs to overcome obstacles such as stairs and indoor terrain. In order to arrive at a design compromise that can retain the advantages of each mode while minimizing disadvantages, we examine the dynamics and control of various cluster geometries and give analytical arguments in support of a three wheel cluster design while verifying our hypothesis using simulations of various cluster architectures. We then present the design and the construction of “Charlie,” a prototype clusterwheel vehicle, and demonstrate basic stable obstacle traversal.
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