Statistical methods in the analysis of strength parameters of epoxy-glass composites modified with rubber recyclate

• Autorzy: Drewing S. , Abramczyk N. , Żuk D. , Dyl T.

Identyfikatory

DOI

10.5604/01.3001.0053.6702

• Języki publikacji: EN

Abstrakty

EN

Purpose The article presents a statistical analysis of strength parameters of newly developed epoxy-glass composite materials modified with the addition of rubber recyclate. Design/methodology/approach Three variants of materials with a percentage of recyclate content in the composite matrix of 3%, 5%, 7% and a reference variant without the addition of recyclate were used for the study. The samples were subjected to an impact test on a ZWICK RKP 450IR-GE impact hammer. Resilience measurement values were subjected to statistical analyses at the significance level α = 95%, such as: testing the normality of distributions with the Shapiro-Wilk test, testing differences between pairs with the Student's t-test for dependent groups, and testing ANOVA differences for independent groups. Findings The Shapiro-Wilk test confirmed that the resilience variables for all tested samples were in normal distributions; therefore the highest power parametric tests were used to test the differences. Using the Student's t-test, it was confirmed that between pairs of variables in configurations: standard sample with the modified sample, there were significant statistical differences in the distribution of resilience values for all samples. ANOVA confirmed significant changes in impact strength in 10 comparison variants. Research limitations/implications The obtained test results showed that in 9 compared cases, there were significant statistical differences, and in one case, there were no significant differences. Practical implications The performed statistical analyses confirmed their significant usefulness in the process of qualification of strength parameters for materials with high anisotropy, such as composites. Originality/value The manufactured products are innovative in terms of the method of using the addition of rubber recyclate as a filler for epoxy-glass composites. The use of static methods for their study also has practical value. It optimizes the analysis methods of the results of measurements of strength parameters of new composite materials.

Słowa kluczowe

EN

statistical analysis; glass composite; rubber recyclate; impact strength; modification

PL

analiza statystyczna; kompozyt szklany; recyklat gumowy; udarność; modyfikacja

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2023
• Tom: Vol. 117, nr 2
• Strony: 71--78
• Opis fizyczny: Bibliogr. 20 poz., rys., tab., wykr.

Twórcy

autor

Drewing S.

• Faculty of Marine Engineering, Gdynia Maritime University, Morska str. 81-87, 81-225 Gdynia, Poland

autor

Abramczyk N.

• Faculty of Marine Engineering, Gdynia Maritime University, Morska str. 81-87, 81-225 Gdynia, Poland

autor

Żuk D.

• Faculty of Marine Engineering, Gdynia Maritime University, Morska str. 81-87, 81-225 Gdynia, Poland

• https://orcid.org/0000-0002-0810-0626

autor

Dyl T.

• Faculty of Marine Engineering, Gdynia Maritime University, Morska str. 81-87, 81-225 Gdynia, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).