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Czerniak J.M.,Great Technology | Macko M.,Casimir the Great University in Bydgoszcz | Ewald D.,Great Technology
Advances in Intelligent Systems and Computing | Year: 2016

This article is a part of the series dedicated to AI Methods Inspired by Nature and their implementation in the mechatronic systems. The CutMAG algorithmuses hybrid approach to optimisation, i.e. a combination of classic genetic algorithms (GA) with morphologic optimisation (M) thus creating innovative approach to optimisation of cutting disk design (Cut) for the multi-edge grinder. The input data include population of individuals. Each individual is represented by a set of cutting disks. Whereas the fitness function was assumed as a combination of several postulates of the mechanical design foundations. The method includes mechanical, design and energy aspects. Each individual constitutes a complete solution of the disk set whereas the population represents the entire class of solutions. The fitness function of an individual is calculated as the average fitness of each disk supplemented by information describing the relationship between both adjacent disks. The method for calculation of function values was selected so as to ensure its maximisation in the process of evolution. Although promising results of the genetic algorithms operation were achieved, one can consider further improvement of the method efficiency. The authors used morphological operations in order to better adopt the method to the task. © Springer International Publishing Switzerland 2016. Source


Paciorek-Sadowska J.,Casimir the Great University in Bydgoszcz | Czuprynski B.,Casimir the Great University in Bydgoszcz | Liszkowska J.,Casimir the Great University in Bydgoszcz
Journal of Fire Sciences | Year: 2015

Development of a method for synthesis of boroorganic polyols based on boric acid and di(hydroxymethyl)urea derivatives is described. The polyols obtained were characterized in terms of their suitability for production of rigid polyurethane-polyisocyanurate foams, with infrared and nuclear magnetic resonance analyses confirming the presence of active hydroxyl groups. Results obtained from the determination of density, viscosity and hydroxyl number enabled formulation of the polyols for use in the production of fire retardant rigid polyurethane-polyisocyanurate foams, the preparation and properties of which are described in Part II of this article. © The Author(s) 2014. Source


Paciorek-Sadowska J.,Casimir the Great University in Bydgoszcz | Czuprynski B.,Casimir the Great University in Bydgoszcz | Liszkowska J.,Casimir the Great University in Bydgoszcz
Journal of Fire Sciences | Year: 2015

The method of preparation of boron compounds with the use of di(hydroxymethyl)urea derivatives and boric acid has been described. On the basis of our studies, it was found that application of the borates obtained, as a polyol component and simultaneously as a flame retardant in recipe for preparation of polyurethane-polyisocyanurate foams, had a positive effect on properties of foams. The resulting rigid foams were characterized by a lower brittleness, higher compressive strength and content of closed cells and significantly lower flammability in comparison with the standard foam. Flammability was determined by the methods of oxygen index, Butler's test, infrared camera and cone calorimeter. The results of our studies showed that new polyols obtained on the basis of N,N′-di(methyleneoxy-4-hydroxybutyl)urea, N,N′-di(methyleneoxy-3-hydroxybutyl)urea, N,N′-di((methyleneoxy-2-hydroxymethylpropyl)urea and boric acid can be successfully applied for production of rigid polyurethane-polyisocyanurate foams. Application of the new compounds in recipe for preparation of foams improved their physico-mechanical properties. © The Author(s) 2014. Source

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