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An Influence of Cross-Sectional Features on the Stability and Load-Carrying Capacity of Carbon-Epoxy Composite Structures Cover

An Influence of Cross-Sectional Features on the Stability and Load-Carrying Capacity of Carbon-Epoxy Composite Structures

Open Access
|Sep 2025

Figures & Tables

Fig. 1.

Test specimens

Fig. 2.

Specimen in the Z100 Zwick electromechanical testing machine at DIC system

Fig. 3.

Numerical model (with boundary conditions)

Fig. 4.

Force versus shortening: a) specimen A-1, b) specimen B-1, c) specimen C-1

Fig. 5.

Buckling modes: a) specimen A (FEM), b) specimen A (EXP), c) specimen B (FEM), d) specimen B (EXP), e) specimen C (FEM), c) specimen C (EXP)

Fig. 6.

Force versus shortening at the damage initiation stage: a) specimen B-1, b) specimen B-2, c) specimen B-3

Fig. 7.

Graphical representation of damage initiation for FEA simulations

Fig. 8.

Failure characteristics: a) specimen A-type, b) specimen B-type, c) specimen C-type

Fig. 9.

Fracture modes: a) A specimen (FEM), b) A specimen (EXP), c) B specimen (FEM), d) B specimen (EXP), e) C specimen (FEM), c) C specimen (EXP)

Fig. 10.

The fracture stages - ply by ply: a) A-type, b) B-type, c) C-type

Fig. 11.

The fracture phenomenon of A-type composite profile

Fig. 12.

The fracture phenomenon of A-type composite profile - detailed view of the failure form at orientation of the digital microscope head

Buckling force values

1 (EXP)2 (EXP)3 (EXP)EXPavgEXPSDFEMFEM/EXPavg
A19,169 N18,512 N19,002 N18,894 N279 N20,671 N1.09
B18,544 N18,892 N18,771 N18,736 N144 N19,556 N1.04
C13,818 N13,352 N13,284 N13,485 N237 N14,037 N1.04

Damage initiation force values

1 (EXP)2 (EXP)3 (EXP)EXPavgEXPSDFEMFEM/EXPavg
A20,234 N23,557 N21,042 N21,611 N1,415 N24,694 N1.14
B27,537 N26,916 N27,615 N27,356 N312 N28,679 N1.05
C31,081 N30,128 N30,304 N30,504 N414 N31,074 N1.02

Fracture force values

1 (EXP)2 (EXP)3 (EXP)EXPavgEXPSDFEMFEM/EXPavg
A35,047 N36,904 N40,121 N37,357 N2,096 N38,358 N1.03
B37,513 N40,139 N37,722 N38,458 N1,192 N38,703 N1.01
C39,800 N39,151 N40,573 N39,841 N581 N40,463 N1.02
DOI: https://doi.org/10.2478/ama-2025-0049 | Journal eISSN: 2300-5319 | Journal ISSN: 1898-4088
Language: English
Page range: 426 - 433
Submitted on: Apr 8, 2025
|
Accepted on: Aug 27, 2025
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Published on: Sep 30, 2025
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2025 Patryk RÓŻYŁO, Kuba ROSŁANIEC, published by Bialystok University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.