Environmental Influence on Randomly Chopped Glass Fiber/Polyester Composite's Fracture Toughness and Resistance Using Asymmetric Four‐Point Bending.
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| Title: | Environmental Influence on Randomly Chopped Glass Fiber/Polyester Composite's Fracture Toughness and Resistance Using Asymmetric Four‐Point Bending. |
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| Authors: | Zeleke, Mulugeta Belay1 (AUTHOR) mulugeta_belay@dmu.edu.et, Filketu, Sisay Addis1 (AUTHOR), Kebede, Alemu Workie1 (AUTHOR), Hazra, Arpan1 (AUTHOR) ahazra@wiley.com |
| Source: | Journal of Engineering (2314-4912). 12/5/2025, Vol. 2025, p1-10. 10p. |
| Subjects: | Fracture toughness, Crack propagation, Polyesters, Strength of materials, Glass-reinforced plastics, Hypothesis |
| Abstract: | Ships, rockets, aircraft, and aerospace are intricate systems for engineering that have thousands of parts. Glass fiber–polyester reinforced composite is primarily utilized in the building of these systems and is exposed to a variety of environmental aging factors. The fracture toughness of these materials has a significant impact on their resistance to crack propagation. In this study, the fracture toughness and resistance of a randomly cut‐glass fiber reinforced composite were experimentally evaluated following exposure to a range of unfavorable conditions, including saline water, low and high temperatures, acidic water, and water for varying lengths of time. The laminates were created using a manual layup procedure, and their fracture toughness and resistance were tested by asymmetric four‐point bending on 101 specimens in accordance with ASTM D5045. Critical stress intensity factor (KIIC) and critical strain energy release rate (GIIC) were measured throughout the test, which was conducted using a universal testing equipment. Materials immersed in acidic water experienced the greatest reductions in fracture toughness, followed by those immersed in water, saline water, low temperature, and high temperature. According to the data, the longer a material is exposed to the environment, the less resistant it is to fracture; therefore, it is more important than ever to predict how a composite material will fracture for design purposes. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Engineering (2314-4912) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Abstract: | Ships, rockets, aircraft, and aerospace are intricate systems for engineering that have thousands of parts. Glass fiber–polyester reinforced composite is primarily utilized in the building of these systems and is exposed to a variety of environmental aging factors. The fracture toughness of these materials has a significant impact on their resistance to crack propagation. In this study, the fracture toughness and resistance of a randomly cut‐glass fiber reinforced composite were experimentally evaluated following exposure to a range of unfavorable conditions, including saline water, low and high temperatures, acidic water, and water for varying lengths of time. The laminates were created using a manual layup procedure, and their fracture toughness and resistance were tested by asymmetric four‐point bending on 101 specimens in accordance with ASTM D5045. Critical stress intensity factor (KIIC) and critical strain energy release rate (GIIC) were measured throughout the test, which was conducted using a universal testing equipment. Materials immersed in acidic water experienced the greatest reductions in fracture toughness, followed by those immersed in water, saline water, low temperature, and high temperature. According to the data, the longer a material is exposed to the environment, the less resistant it is to fracture; therefore, it is more important than ever to predict how a composite material will fracture for design purposes. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 23144904 |
| DOI: | 10.1155/je/2738076 |
