Development of smart bonded composite patch repair solution

2020 ◽  
Author(s):  
Florian Lambinet ◽  
Zahra Sharif Khodaei
Keyword(s):  
Patch Repair ◽  
Composite Patch ◽  
Bonded Composite

Curing monitoring of bonded composite patch at constant temperature with electromechanical impedance and system parameters evaluation approach

2021 ◽  
Vol 31 (1) ◽  
pp. 015039
Author(s):  
Jianjian Zhu ◽  
Jinshan Wen ◽  
Chunyang Chen ◽  
Xiao Liu ◽  
Zifeng Lan ◽  
...  
Keyword(s):  
Real Time ◽  
Constant Temperature ◽  
Patch Repair ◽  
Curing Process ◽  
Real Time Monitoring ◽  
Electromechanical Impedance ◽  
System Parameters ◽  
Composite Patch ◽  
Repair Patch ◽  
Bonded Composite

Abstract As one of cost-effective maintenance methods, bonded composite patch repair has been receiving more and more attention in the engineering community since past decades. However, realizing real-time monitoring for curing process of bonded repair patch is difficult for most current techniques. In our work, a method based on electromechanical impedance and system parameters evaluation for structural health monitoring issues was developed, which could implement the online monitoring throughout whole curing process. Compared with the dynamic thermomechanical analysis results, the experiment data matches well. It demonstrates that the proposed approach can effectively monitor the curing process of composite repair patch at a constant temperature of 120 °C. Hence, the presented approach in this paper is expected to be a novel, robust, and real-time monitoring method for structural maintenance with the composite patch.

Numerical Analysis of the Performances of Bonded Composite Repair with Adhesive Band in Pipeline API X65

2014 ◽  
Vol 875-877 ◽  
pp. 1101-1105 ◽  
Author(s):  
Madjid Meriem-Benziane ◽  
Sabah A. Abdul-Wahab ◽  
Nesar Merah ◽  
Benoauda Babaziane
Keyword(s):  
Patch Repair ◽  
Crack Growth Behavior ◽  
Adhesive Properties ◽  
Composite Patch ◽  
Bonded Composite ◽  
Element Approach ◽  
Rupture Pressure ◽  
Angle Crack ◽  
External Corrosion ◽  
Adhesive Band

The technique of adhesively bonded composite patch repair has been successfully applied in pipeline of API X65 components repair and has recently been expanded to commercial pipeline industry. In the present paper, the crack growth behavior of cracked pipeline API X65 repaired with bonded composite patch was investigated. The finite element approach was applied in order to analyses the circumferential crack’s behavior repaired by a carbon-epoxy composite patch. The effects of the properties of the patch on the evolution of the stress intensity factor, according of angle crack tip, were discussed. The adhesive properties were optimized to increase the performance of the repair of structures by such reinforcement. Moreover, a relatively new method was developed to stop the external corrosion and the structurally reinforce steel pipes by external wrapping of damaged sections, using fibre reinforced polymer (FRP) materials. The results indicated that the defect width around the circumference had little impact on the ultimate rupture pressure of the repaired vessel. On the other hand, it was found that the defect width around the circumference was affected by the stress state in the underlying pipe substrate.

Experimental and numerical analysis of bonded composite patch repair in aluminum alloy 7075 T6

2015 ◽  
Vol 73 ◽  
pp. 67-73 ◽  
Author(s):  
F. Benyahia ◽  
L. Aminallah ◽  
A. Albedah ◽  
B. Bachir Bouiadjra ◽  
T. Achour
Keyword(s):  
Aluminum Alloy ◽  
Numerical Analysis ◽  
Patch Repair ◽  
Composite Patch ◽  
Bonded Composite ◽  
Aluminum Alloy 7075
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