An Approach to Testing Antivandal Composite Materials as a Function of Their Thickness and Striker Shape—A Case Study
Our research material comprised antivandal fire-retardant hybrid composites modified with inorganic and organic fillers intended for application in public transport vehicles. This paper presents an approach to studying their impact strength as a function of the composite thickness (3 to 6 mm) and st...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/16/5/591 |
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| author | Emilia Irzmańska Kamila Mizera Natalia Litwicka Kamila Sałasińska |
| author_facet | Emilia Irzmańska Kamila Mizera Natalia Litwicka Kamila Sałasińska |
| author_sort | Emilia Irzmańska |
| collection | DOAJ |
| description | Our research material comprised antivandal fire-retardant hybrid composites modified with inorganic and organic fillers intended for application in public transport vehicles. This paper presents an approach to studying their impact strength as a function of the composite thickness (3 to 6 mm) and striker shape (hemispherical, semicylindrical, wedge-shaped) used in the experimental stand. Group A composites, made of single fabric layers (<i>n</i> = 5), were thinner and their impact strength was lower by 73% than that for Group B composites made of double fabric layers. Study results show an almost threefold improvement in impact strength for a thickness increase of as little as 0.3 mm. Statistical analysis (the Shapiro–Wilk test, <i>p</i> > 0.05) did not show any significant differences in the quantitative evaluation of changes (<i>n</i> = 3) on the surface of the examined materials caused by impacts with strikers of different shapes. In turn, a linear correlation (Shapiro-Wilk test, <i>W</i> = 0.0857, <i>p</i> = 0.022) was found between impact strength and the thickness of the studied materials. It was observed that appropriate arrangement of fabrics and powder fillers can lead to a different distribution of forces and energy absorbed by the tested material. A lower impact strength was observed for the composite which had powder fillers in its composition, which caused the formation of microvoids in the structure of the material and thus led to a weakening in their strength properties. An effect of the placement of the glass fabric layer in the composite on the results was also observed. Moreover, SEM evaluation of the composites revealed their layered structure and the impregnation of woven fabrics with resin. |
| first_indexed | 2024-04-25T00:20:43Z |
| format | Article |
| id | doaj.art-0d52cd1ccfb44eeea6641704700182a7 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-04-25T00:20:43Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-0d52cd1ccfb44eeea6641704700182a72024-03-12T16:53:21ZengMDPI AGPolymers2073-43602024-02-0116559110.3390/polym16050591An Approach to Testing Antivandal Composite Materials as a Function of Their Thickness and Striker Shape—A Case StudyEmilia Irzmańska0Kamila Mizera1Natalia Litwicka2Kamila Sałasińska3Department of Personal Protective Equipment, Central Institute of Labour Protection—National Research Institute (CIOP-PIB), Czerniakowska 16, 00-701 Warsaw, PolandDepartment of Chemical, Biological and Aerosol Hazards, Central Institute of Labour Protection—National Research Institute (CIOP-PIB), Czerniakowska 16, 00-701 Warsaw, PolandDepartment of Personal Protective Equipment, Central Institute of Labour Protection—National Research Institute (CIOP-PIB), Czerniakowska 16, 00-701 Warsaw, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, PolandOur research material comprised antivandal fire-retardant hybrid composites modified with inorganic and organic fillers intended for application in public transport vehicles. This paper presents an approach to studying their impact strength as a function of the composite thickness (3 to 6 mm) and striker shape (hemispherical, semicylindrical, wedge-shaped) used in the experimental stand. Group A composites, made of single fabric layers (<i>n</i> = 5), were thinner and their impact strength was lower by 73% than that for Group B composites made of double fabric layers. Study results show an almost threefold improvement in impact strength for a thickness increase of as little as 0.3 mm. Statistical analysis (the Shapiro–Wilk test, <i>p</i> > 0.05) did not show any significant differences in the quantitative evaluation of changes (<i>n</i> = 3) on the surface of the examined materials caused by impacts with strikers of different shapes. In turn, a linear correlation (Shapiro-Wilk test, <i>W</i> = 0.0857, <i>p</i> = 0.022) was found between impact strength and the thickness of the studied materials. It was observed that appropriate arrangement of fabrics and powder fillers can lead to a different distribution of forces and energy absorbed by the tested material. A lower impact strength was observed for the composite which had powder fillers in its composition, which caused the formation of microvoids in the structure of the material and thus led to a weakening in their strength properties. An effect of the placement of the glass fabric layer in the composite on the results was also observed. Moreover, SEM evaluation of the composites revealed their layered structure and the impregnation of woven fabrics with resin.https://www.mdpi.com/2073-4360/16/5/591impact strengthmaterial thicknessstatistical analysis |
| spellingShingle | Emilia Irzmańska Kamila Mizera Natalia Litwicka Kamila Sałasińska An Approach to Testing Antivandal Composite Materials as a Function of Their Thickness and Striker Shape—A Case Study Polymers impact strength material thickness statistical analysis |
| title | An Approach to Testing Antivandal Composite Materials as a Function of Their Thickness and Striker Shape—A Case Study |
| title_full | An Approach to Testing Antivandal Composite Materials as a Function of Their Thickness and Striker Shape—A Case Study |
| title_fullStr | An Approach to Testing Antivandal Composite Materials as a Function of Their Thickness and Striker Shape—A Case Study |
| title_full_unstemmed | An Approach to Testing Antivandal Composite Materials as a Function of Their Thickness and Striker Shape—A Case Study |
| title_short | An Approach to Testing Antivandal Composite Materials as a Function of Their Thickness and Striker Shape—A Case Study |
| title_sort | approach to testing antivandal composite materials as a function of their thickness and striker shape a case study |
| topic | impact strength material thickness statistical analysis |
| url | https://www.mdpi.com/2073-4360/16/5/591 |
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