Statistical evaluation of the effect of hygrothermal aging on the interlaminar shear of GFRP��
The studies of patterns of changes in properties, accumulation of damages and failure of structural composites after hygrothermal aging represent a relevant and important area. The paper presents the results of mechanical tests for interlaminar shear of specimens of structural glass/epoxy composite...
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Gruppo Italiano Frattura
2022-04-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/3407/3484 |
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| author | Dmitrii S. Lobanov Andrey S. Yankin Nataliya I. Berdnikova� |
| author_facet | Dmitrii S. Lobanov Andrey S. Yankin Nataliya I. Berdnikova� |
| author_sort | Dmitrii S. Lobanov |
| collection | DOAJ |
| description | The studies of patterns of changes in properties, accumulation of damages and failure of structural composites after hygrothermal aging represent a relevant and important area. The paper presents the results of mechanical tests for interlaminar shear of specimens of structural glass/epoxy composite electrical use before and after preliminary hygrothermal aging in operating environments (process water, sea water, machine oil) of various duration (15, 30 and 45 days) and various temperatures (22, 60 and 90 oC). The test results were used to statistically evaluate the significance of non-monotonous changes in strength in the case of interlaminar shear after preliminary hygrothermal aging relative to the nominal material using ANCOVA and regression analysis. Such techniques indicated that sea and process water solutions negatively affected the interlaminar shear strength, but their influences were slightly different and strongly depended on the interaction effect between exposure time and solution temperature. Thus, the maximum difference is around 15 % and 12 % after 45 days inside process and sea water respectively at 90 oC. On the contrary, the impact of machine oil led to an increase in strength, but the effect is weaker compared to water solutions (about 6 %). |
| format | Article |
| id | doaj-art-6854392e36454b89bb0e13ca50e1f204 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2022-04-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-6854392e36454b89bb0e13ca50e1f2042025-01-02T22:37:33ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932022-04-01166014615710.3221/IGF-ESIS.60.1110.3221/IGF-ESIS.60.11Statistical evaluation of the effect of hygrothermal aging on the interlaminar shear of GFRP��Dmitrii S. LobanovAndrey S. YankinNataliya I. Berdnikova�The studies of patterns of changes in properties, accumulation of damages and failure of structural composites after hygrothermal aging represent a relevant and important area. The paper presents the results of mechanical tests for interlaminar shear of specimens of structural glass/epoxy composite electrical use before and after preliminary hygrothermal aging in operating environments (process water, sea water, machine oil) of various duration (15, 30 and 45 days) and various temperatures (22, 60 and 90 oC). The test results were used to statistically evaluate the significance of non-monotonous changes in strength in the case of interlaminar shear after preliminary hygrothermal aging relative to the nominal material using ANCOVA and regression analysis. Such techniques indicated that sea and process water solutions negatively affected the interlaminar shear strength, but their influences were slightly different and strongly depended on the interaction effect between exposure time and solution temperature. Thus, the maximum difference is around 15 % and 12 % after 45 days inside process and sea water respectively at 90 oC. On the contrary, the impact of machine oil led to an increase in strength, but the effect is weaker compared to water solutions (about 6 %).https://www.fracturae.com/index.php/fis/article/view/3407/3484hygrothermal agingaggressive operating media (environments, solutions)interlaminar shear strengthgfrpancovamultiple linear regression |
| spellingShingle | Dmitrii S. Lobanov Andrey S. Yankin Nataliya I. Berdnikova� Statistical evaluation of the effect of hygrothermal aging on the interlaminar shear of GFRP�� Fracture and Structural Integrity hygrothermal aging aggressive operating media (environments, solutions) interlaminar shear strength gfrp ancova multiple linear regression |
| title | Statistical evaluation of the effect of hygrothermal aging on the interlaminar shear of GFRP�� |
| title_full | Statistical evaluation of the effect of hygrothermal aging on the interlaminar shear of GFRP�� |
| title_fullStr | Statistical evaluation of the effect of hygrothermal aging on the interlaminar shear of GFRP�� |
| title_full_unstemmed | Statistical evaluation of the effect of hygrothermal aging on the interlaminar shear of GFRP�� |
| title_short | Statistical evaluation of the effect of hygrothermal aging on the interlaminar shear of GFRP�� |
| title_sort | statistical evaluation of the effect of hygrothermal aging on the interlaminar shear of gfrp�� |
| topic | hygrothermal aging aggressive operating media (environments, solutions) interlaminar shear strength gfrp ancova multiple linear regression |
| url | https://www.fracturae.com/index.php/fis/article/view/3407/3484 |
| work_keys_str_mv | AT dmitriislobanov statisticalevaluationoftheeffectofhygrothermalagingontheinterlaminarshearofgfrp AT andreysyankin statisticalevaluationoftheeffectofhygrothermalagingontheinterlaminarshearofgfrp AT nataliyaiberdnikova statisticalevaluationoftheeffectofhygrothermalagingontheinterlaminarshearofgfrp |