in this article, hybrid organic-inorganic materials were prepared by free radical copolymerization of 2-hydroxyethyl methacrylate (hema) and 3-methacryloxy-propyltrimethoxysilane (mptms) via sol-gel process. the methoxysilane-containing copolymer precursors were synthesized at different compositions. these copolymer precursors were then hydrolyzed and condensed to produce phema-sio2 nanocomposi...

In this work we present a new approach on the study of dynamical systems. Combining the two ways of expressing the uncertainty, using probabilistic theory and credibility theory, we have investigated the generalized fractional hybrid equations. We have introduced the concepts of generalized fractional Wiener process, generalized fractional Liu process and the combination between them, generaliz...

Abstract Hybrid material composites can meet the increasing demands for high strength and low weight due to their different workpiece properties. Usually, hybrid components require post-machining after fabrication. Due properties, new challenges arise in machining process. It is essential recognize course of boundary order adapt process planning accordingly enable a uniform transition during ma...

Abstract The production of hybrid components involves a long process chain, which leads to high investment costs even before machining. To increase safety and quality during finishing, it is necessary provide information about the semi-finished parts geometry for machining identify defect at an early stage. This paper presents investigation predict variations in dimension cavities inside materi...

Abstract. The increasing share and expansion of miniature devices requires the mastery parts production, including metal parts. In microforming, due to conditions mechanical similarity, aim is use materials with smallest grain. Ultra-fine-grained metals (UFG) fulfill this requirement. These can be obtained, inter alia, in SPD processes such as ECAP. work uses extension based on ECAP additional ...