当前位置: X-MOL 学术Compos. Struct. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Bending behavior of glass fiber reinforced composite overwrapping pvc plastic pipes
Composite Structures ( IF 6.3 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.compstruct.2020.112656
M. J.Al-Mahfooz , E. Mahdi

Abstract The challenge associated with the use of polyvinyl chloride (PVC) plastic pipelines is to improve their structural integrity without increasing their cost. Currently, PVC pipelines are the most cost-effective method of transporting water and sewage drainage. However, their low deterioration and mechanical properties cause significant losses and sacrifice the structural integrity of pipelines. Therefore, this study proposes the glass fiber-reinforced polymer (GFRP) overwrapped system to strengthen the external surface of PVC pipes, which will improve pipes’ flexural load-carrying capacities. Accordingly, an extensive experimental program is developed and performed to examine the flexural behavior of GFRP composite overwrapped onto PVC plastic pipes. These phases include the fabrication process and different types of tests for evaluating the structural integrity of the GFRP/PVC pipes. The results showed that the proposed overwrapped system significantly improved the flexural carrying capability. The initial flexural failure load increased significantly, with an improvement from 64 to 1140 N. Also, the ultimate flexural load found to be improved by a factor of nine. The flexural behavior was significantly affected by changes in the fiber orientation angle. The results also revealed that as the pipe diameter increased, the flexural carrying load capacity increased. It is also important to note that the matrix cracking, fiber debonding, and fiber breakage were dominating the failure modes of GFRP/PVC pipes.

中文翻译:

玻璃纤维增​​强复合外包PVC塑料管的弯曲行为

摘要 与使用聚氯乙烯 (PVC) 塑料管道相关的挑战是在不增加成本的情况下改善其结构完整性。目前,PVC管道是输送水和污水排放的最具成本效益的方法。然而,它们的低劣化和机械性能会导致重大损失并牺牲管道的结构完整性。因此,本研究提出玻璃纤维增​​强聚合物 (GFRP) 外包裹系统来加强 PVC 管道的外表面,这将提高管道的弯曲承载能力。因此,开发并执行了一个广泛的实验程序来检查包裹在 PVC 塑料管上的 GFRP 复合材料的弯曲行为。这些阶段包括用于评估 GFRP/PVC 管道结构完整性的制造过程和不同类型的测试。结果表明,所提出的外包裹系统显着提高了弯曲承载能力。初始弯曲破坏载荷显着增加,从 64 N 提高到 1140 N。此外,发现最终弯曲载荷提高了 9 倍。弯曲行为受纤维取向角变化的显着影响。结果还表明,随着管径的增加,弯曲承载能力增加。同样重要的是要注意基体开裂、纤维脱粘和纤维断裂是 GFRP/PVC 管道的主要失效模式。结果表明,所提出的外包裹系统显着提高了弯曲承载能力。初始弯曲破坏载荷显着增加,从 64 N 提高到 1140 N。此外,发现最终弯曲载荷提高了 9 倍。弯曲行为受纤维取向角变化的显着影响。结果还表明,随着管径的增加,弯曲承载能力增加。同样重要的是要注意基体开裂、纤维脱粘和纤维断裂是 GFRP/PVC 管道的主要失效模式。结果表明,所提出的外包裹系统显着提高了弯曲承载能力。初始弯曲破坏载荷显着增加,从 64 N 提高到 1140 N。此外,发现最终弯曲载荷提高了 9 倍。弯曲行为受纤维取向角变化的显着影响。结果还表明,随着管径的增加,弯曲承载能力增加。同样重要的是要注意基体开裂、纤维脱粘和纤维断裂是 GFRP/PVC 管道的主要失效模式。发现极限弯曲载荷提高了九倍。弯曲行为受纤维取向角变化的显着影响。结果还表明,随着管径的增加,弯曲承载能力增加。同样重要的是要注意基体开裂、纤维脱粘和纤维断裂是 GFRP/PVC 管道的主要失效模式。发现极限弯曲载荷提高了九倍。弯曲行为受纤维取向角变化的显着影响。结果还表明,随着管径的增加,弯曲承载能力增加。同样重要的是要注意基体开裂、纤维脱粘和纤维断裂是 GFRP/PVC 管道的主要失效模式。
更新日期:2020-11-01
down
wechat
bug