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Determination of the difference between two complex polymer models simulating the behaviour of biological structures

Kmiecik Barbara, Labowska Magdalena, Detyna Jerzy

Biocybernetics and Biomedical Engineering

2019

Vol. 39, no. 2

503--511

This article presents research conducted on various polymer models imitating biological structures. Tests were conducted using a newly developed research method described in [1]. The purpose of our research was to check if the measuring system [1] is able to distinguish multilayer samples. Test materials were two different polymer models which were subjected to pressure in the central point. Marked points on the external surface of the sample were followed during the measurement. The arrangement of points on the image allowed to reconstruct the 3D surface of the sample and to determine the displacement of the analysed points. Measurements were repeated 10 times to ensure the representativeness (credibility) of the conducted research. Statistical tests and artificial neural networks (ANN) were used to classify the examined samples. We used 5-fold cross-validation for training and validating the ANN. The entire set of 75 cases was divided into 5 equinumerous subsets. The obtained results suggest that the proposed method distinguished between the tested samples on the basis of results. Analysed materials react differently to the given mechanical factor.

Funkcjonalna adaptacja w przyrodzie - optymalizacja kształtu struktur biologicznych

Milewski G.

Aktualne Problemy Biomechaniki

2008

z. 2

111--114

W pracy przedstawiono podstawy i założenia teorii funkcjonalnej adaptacji w przyrodzie. Prezentację zilustrowano przykładami struktur biologicznych oraz wzorowanych na nich rozwiązań konstrukcyjnych. W szczególności wyeksponowano zagadnienia wytrzymałościowe optymalizacji kształtu struktur biologicznych.

The paper presents the fundamentals and the main assumptions of the theory of functional adaptation in nature. The presentation has been illustrated with the examples of biological structures and constructions based on those designs. In particular, the problems of strength optimization of the shape of biological structures have been worked out.