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The research was conducted under project No. 2021/41/B/ST8/00148, financed by the
National Science Centre, Poland. This research was funded in whole or in part by the National
Science Centre, Poland [2021/41/B/ST8/00148]. For the purpose of Open Access, the author has
applied a CC-BY public copyright license to any Author Accepted Manuscript (AAM) version arising
from this submission.
The aim of the current study was to determine the load capacity of composite columns
subjected to axial compressive load. The subjects of the study were two types of columns with
a rectangular cross-section, with different edge lengths. The tested columns had a closed cross-
section. Four different fiber arrangements were analyzed for both cross-sections studied. The
research was realized using interdisciplinary methods to determine the mechanism of damage to the
composite material, with particular emphasis on damage initiation and propagation. Experimental
tests were realized on a testing machine, the analysis was carried out with an acoustic emission
system, and image analysis using visual assessment system of deflections of the walls of the structure.
In addition, a number of numerical analyses were realized based on advanced modeling techniques
for fiber-reinforced composites. A comparative analysis of both quantitative and qualitative results is
presented for both analyses. The innovation of the presented research lies in the development of a
custom method for modeling structures made of composite material with special emphasis on the
failure phase. This will allow to accurately reflect the modeling of thin-walled structures with closed
cross-section subjected to loading in a complex stress state.
