The effect of thermal aging degradation of CFRP composite on its mechanical properties using destructive and non-destructive methods and the DIC system

Golewski, Przemysław; Sadowski, Tomasz; Kneć, Marcin; Budka, M.

doi:10.1016/j.polymertesting.2022.107902

Cited by 11 publications

(3 citation statements)

References 40 publications

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“…It has been observed that as the load increases, the respective differences in displacement increments become larger. Therefore, to be able to make more accurate comparisons and detect structural defects, measurements using digital image correlation DIC [30] for the entire structure are necessary. In general, the deflection results for the demonstrator are greater than in the numerical simulation because the virtual model has no defects and is geometrically perfect.…”

Section: Discussionmentioning

confidence: 99%

Composite Medical Tabletops Made of CFRP with Different Cross-Sections: Numerical Analysis and Laboratory Testing

Golewski,

Pietras,

Sadowski

et al. 2023

Materials

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This paper presents the results of laboratory tests of CFRP (carbon fiber-reinforced polymer) laminates, which allowed the development of numerical material models. The obtained data were used in a further stage to perform numerical simulations of four variants of medical tabletops, differing, among other features, in the shape of the cross-section. Maximum deflections and effort in the composite material were analyzed. The final step was to perform a laboratory test for one of the tabletop versions, the results of which confirmed the correctness of the numerical calculations. This work is aimed at both researchers and designers involved in the practical application of fiber-reinforced polymer matrix composites.

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Section: Discussionmentioning

confidence: 99%

Composite Medical Tabletops Made of CFRP with Different Cross-Sections: Numerical Analysis and Laboratory Testing

Golewski,

Pietras,

Sadowski

et al. 2023

Materials

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“…mechanical, chemical but also thermal loading, which is the focus of this paper. The influence of temperature can therefore be crucial for some structures and lead to effects such as: loss of stability [10][11][12][13], material degradation [14,15], degradation of elastic constants, delamination [14,[16][17][18], reinforcement slippage, creep, thermal flow. It is also worth mentioning that already during the manufacturing process, composites are subjected to increased temperatures [19], and then cooled to ambient temperature, which can lead to residual stresses in the material [20].…”

Section: Introductionmentioning

confidence: 99%

Temperature Effect on Buckling Properties of Thin-Walled Composite Profile Subjected to Axial Compression

Falkowicz,

Kuciej,

Świech

2024

Adv. Sci. Technol. Res. J.

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This study investigates the influence of temperature variations on the buckling properties of thin-walled omega-profiles fabricated from carbon-epoxy composite materials. Utilizing a MTS testing machine, compression tests were conducted on these profiles at temperatures ranging from -20°C to 80°C, in 20°C increments. The primary objective was to assess how temperature fluctuations impact the buckling load and load-bearing capacity of these composite profiles under axial compression. The experimental setup allowed for precise measurement of load-displacement and load-deflection characteristics, and the critical load at which buckling initiation occurred. Observations revealed that the buckling resistance of the profiles exhibited a complex dependence on temperature. At lower temperatures, the composite material demonstrated enhanced stiffness and strength, marginally increasing buckling resistance. Conversely, at elevated temperatures, a noticeable degradation in mechanical properties was observed, leading to a reduced buckling load and altered failure modes. To complement the experimental findings, a comprehensive finite element (FE) analysis was conducted for sample in room temperature. The FE model, developed to replicate the experimental conditions closely, employed an eigenvalue-based approach to predict the buckling initiation and progression accurately. The presented results are the results of only preliminary tests and they will be expand about more samples number as well as to determine material properties for various temperatures.

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“…Golewski et al 7 investigated the impact of thermal aging degradation on the mechanical properties of CFRCs. The results indicated that thermal aging significantly reduced the tensile and flexural strength of CFRCs, with the extent of degradation increasing with aging temperature and time.…”

Section: Introductionmentioning

confidence: 99%

Exploring the effects of thermal aging on scratch resistance of carbon fiber reinforced composite materials: A comprehensive study

Demircioğlu Bulçak,

Bora,

Fidan

et al. 2023

Polymer Composites

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This paper investigates the scratch behavior of carbon fiber reinforced composites (CFRCs) under thermal aging conditions. Scratch depth was analyzed with respect to three parameters: velocity, thermal cycle, and direction of the scratch. The results showed that thermal aging has a significant effect on the scratch behavior of CFRCs, with an increase in thermal cycle leading to an increase in scratch depth. The scratch depth was also found to be greater in the weft direction compared to the warp direction, which can be attributed to the difference in fiber arrangement and orientation in the CFRC material. The analysis of variance (ANOVA) was performed to investigate the effect of thermal aging on the scratch behavior of CFRCs. The ANOVA results revealed that the direction of the scratch has a significant effect on scratch depth, with the weft direction showing greater scratch depth compared to the warp direction. The surface roughness of CFRCs was analyzed under thermal aging conditions and with an increase in thermal cycle leading to an increase in surface roughness. The roughness values were found to be higher in the weft direction compared to the warp direction, which can be attributed to the difference in fiber arrangement and orientation in the CFRC material.

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The effect of thermal aging degradation of CFRP composite on its mechanical properties using destructive and non-destructive methods and the DIC system

Cited by 11 publications

References 40 publications

Composite Medical Tabletops Made of CFRP with Different Cross-Sections: Numerical Analysis and Laboratory Testing

Composite Medical Tabletops Made of CFRP with Different Cross-Sections: Numerical Analysis and Laboratory Testing

Temperature Effect on Buckling Properties of Thin-Walled Composite Profile Subjected to Axial Compression

Exploring the effects of thermal aging on scratch resistance of carbon fiber reinforced composite materials: A comprehensive study

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