Uncertainty of properties and failure load in composite materials / Piotr Kędziora // W: COMPDYN 2019: proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and ... więcej

Uncertainty of properties and failure load in composite materials / Piotr Kędziora // W: COMPDYN 2019: proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, held in Crete, Greece, 24-26 June 2019. [Vol. 3] [Dokument elektroniczny] / eds. M. Papadrakakis, M. Fragiadakis. – Athens : Institute of Structural Analysis and Antiseismic Research. School of Civil Engineering. National Technical University of Athens (NTUA), 2019. – S. 5423-5434 : rys., wykr. – Tryb dostępu: https://2019.compdyn.org. – Bibliogr. 31 poz., Abstr. – ISBN 978-618-82844-5-6 (set). – ISBN 978-618-82844-8-7 (vol III)

The impreciseness (uncertainty) of the experimentally obtained data can be described using fuzzy sets theory. It is proposed the fuzzy set method for the correct and concise evaluation of various geometrical ... więcej

The impreciseness (uncertainty) of the experimentally obtained data can be described using fuzzy sets theory. It is proposed the fuzzy set method for the correct and concise evaluation of various geometrical and mechanical properties or final failure load. The variability (understood as the fuzziness) of the fiber and matrix properties is described by a membership function. Based on experimental results it is possible to determine the effect of the fuzziness of the mechanical properties. The fuzzy sets theory allows to build the lower and upper bounds of the failure envelopes for the Tsai-Wu criterion. The linear qualifier function is applied to analyze the composite structure subjected to the load.