Effect of strain rate on static elastic response of glass-polyester composite. Part 2, Analysis of experimental results

• Autorzy: Kozioł Mateusz , Latusek Szymon
• Języki publikacji: EN

Abstrakty

EN

This paper is the second part of a study aimed at evaluating the influence of the strain rate of a plain weave GFRP laminate in a non-destructive static three-point bending test on the stress response of the material. It was found that the stress level during the entire course of the deflection rises with the increase in the strain rate. The relative change in the stress level is comparable for the 0/90 and 45/-45 samples. As the loading speed increases, the elastic modulus of the material also grows. For an increment in the strain rate from 1.11·10^–3 to 5.57·10^–1 1/s, the increase is 10% for the 0/90 samples and 17.7% for the 45/-45 samples. The dependence of the modulus on the strain rate is logarithmic. Based on the theoretical analysis, the cause of the observed effects of the strain rate on the material response was attributed to the viscoelastic behawior of the matrix (cured polymer resin) and the viscoelastic behavior of the system of fibers at the level of the laminate mesostructure.

Słowa kluczowe

EN

glass-polyester laminate; static bending; strain rate; normal stress; elastic modulus in bending; energy dissipation

PL

laminat poliestrowo-szklany; zginanie statyczne; prędkość odkształcenia; naprężenie normalne; moduł sprężystości przy zginaniu; rozpraszanie energii

• Wydawca: Polskie Towarzystwo Materiałów Kompozytowych
• Czasopismo: Composites Theory and Practice
• Rocznik: 2023
• Tom: R. 23, nr 1
• Strony: 44--49
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Kozioł Mateusz

• Silesian University of Technology, Faculty of Materials Engineering, ul. Z. Krasińskiego 8, 40-019 Katowice, Poland

autor

Latusek Szymon

• Silesian University of Technology, Faculty of Materials Engineering, ul. Z. Krasińskiego 8, 40-019 Katowice, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).