Abstract This work aims to study the resistance of repairs with bonded plates in pipes with holes subjected to hydrostatic pressure. It is a promising alternative for application in low-risk repairs (up to 1 MPa). Due to the differences between the circumferential and transverse stresses in the pipes, the influence of the bonded plate area in the joint strength was evaluated, checking whether the shape factor occurs. The effect of plate thickness in the repair strength, besides the addition of silane on the plate surfaces, were also studied. Finally, considering a control plate based in the performed experiments, the surface treatment influence on the tubes was evaluated in the face of rupture pressure of the system. High hydrostatic resistance values were found, demonstrating the efficiency of the procedures used in the repair. The studies show little influence on the repair strength due to dimensions variation in different directions, and high influence on the surface treatment, stiffness and bonded area increase. The work aims to initiate the development of a new procedure for contingency repair with low risk.

中文翻译：

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使用粘合金属板进行管道修复的开发——第一部分：形状系数、刚度和表面处理

摘要 这项工作旨在研究在承受静水压力的带孔管道中使用粘合板进行修复的阻力。它是用于低风险维修（高达 1 MPa）的有前途的替代方案。由于管内周向和横向应力的差异，评估了粘合板面积对接头强度的影响，检查是否出现形状因素。除了在板表面添加硅烷外，还研究了板厚度对修复强度的影响。最后，考虑基于所进行的实验的控制板，在面对系统的破裂压力时评估表面处理对管的影响。发现高静水阻力值，证明了修复中使用的程序的效率。研究表明，不同方向的尺寸变化对修复强度影响不大，而对表面处理、刚度和粘合面积增加的影响很大。这项工作旨在启动一种新的低风险应急维修程序的开发。