Experimental study on mechanical performance of cracked aluminium alloy repaired with composite patch

Pradhan, Shashwati Soumya; Mishra, Umesh; Biswal, Sushant Kumar

doi:10.1016/j.matpr.2020.02.563

Cited by 9 publications

(4 citation statements)

References 14 publications

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“…Sotirios et al [12] employed thermography to investigate the patch debonding propagation subject to cycling mechanical loading, which demonstrates both quantitative and qualitative information for repair efficiency. Pradhan et al [20] investigated the mechanical properties of edge-cracked aluminum plates repaired with a woven glass/epoxy composite patch. Tensile tests, flexural tests and Rockwell hardness tests were conducted, and effects of patch thickness and orientation were discussed.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of Single Patch Composite Repaired Al Alloy Plates: Experimental and Numerical Analysis

Dai

Zhao

et al. 2020

Materials

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In this paper, glass fiber reinforced polymer (GFRP) materials were used to repair cracked Al plates. In order to study the influences of resin properties and repair configurations, three resins and two patch configurations were selected to manufacture six groups of specimens. It turned out that only little differences (less than 3%) were found in tensile strength among the six groups. Compared with the parent plates, the strength recovery ratio was higher than 80% after the GFRP repair, representing excellent repair efficiency. Moreover, a finite element model (FEM) was established to analyze the failure process of the repaired structure under tensile loading. The FEM results show good agreement with the experimental results, indicating good precision. Both the experimental and numerical work found that the damage initiated in the plies adjacent to the crack surface and the failure modes was mainly delamination and fiber breakage. This work will be meaningful for the future application of GFRP in metallic structures.

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Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of Single Patch Composite Repaired Al Alloy Plates: Experimental and Numerical Analysis

Dai

Zhao

et al. 2020

Materials

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“…al., 2018). Patches reduce the stress around the crack area so that the stresses can be transferred from the cracked aluminum sheet to the patch part, and there is no further crack propagation in the area (Pradhan, et. al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Karbon/epoksi ve E-cam/epoksi ile Onarılmış Çentikli Alüminyum 5754-H111 Charpy Darbe Tepkisi

Dindar¹,

Ağir²

2021

European Journal of Science and Technology

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In this study, aluminum sheets with three different notch depths were repaired with carbon/epoxy and e-glass/epoxy composites and than were investigated experimentally for their response to Charpy impact. [90/45/-45] oriented triaxial fabrics were used in patch reinforcement materials. Composite laminates were prepared in [90/45/-45/45/-45/90] orientation by placing these three axial fabrics on top each other. Hand lay-up technique was used in the preparation of laminated composites. The reinforcement fabrics wetted by hand lay-up were cured by hot molding at 100 °C and 7 bar pressure. Composite plates were produced in 40x40 cm dimensions. Aluminum plates were also provided in 40x40 cm dimensions. Both aluminum and composites were cut with water jet to obtain samples and patches from these plates. The aluminum and composite elements cut to the desired dimensions, were glued to each other on oneside with a double component methyl methacrylate adhesive. In the experimental stage, some mechanical properties of the composites were determined first. Afterwards, the energy absorption capacities of the aluminum plates as repaired and unrepaired in three different notch lengths (3 mm, 5 mm, 7 mm), was determined by conducting Charpy notch impact tests. In addition, Scanning Electron Microscope (SEM) analysis of the composite patches were performed. This study, which was conducted to determine to what extend the composite patches affect the notch impact toughness of the aluminum plate, aims to be a guiding resource for engineers and researchers for composite patch repairs.

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“…These were strain distribution, out-of-plane deformation, and residual strength, including the investigation of fatigue crack; growth behavior for thin plates repaired with composite patches, the characterization of crack retardation in thin plates after the repair, and the examination of debondinge growth [1]. In addition, the investigation of [2] focused on the response of cracked steel specimens repaired by polymer composite patches on single sides of the specimens subjected to tensile and bending loadings and hardness test. The un-cracked and patched specimens were tested in the above loading conditions and the test results were evaluated by analyzing the effect of patch thickness and patch materials.…”

Section: Introductionmentioning

confidence: 99%

Study of mechanical behavior by fatigue of a cracked plate repaired by different composite patches

Moulgada

Kaci

Zagane

et al. 2021

Frattura Ed Integrità Strutturale

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This research is based on the study of the fatigue behavior of an aluminum alloy plate with a central crack. The plate is subjected to a tensile loading on its lower and upper parts. Several parameters were highlighted, such as the loading effect with a load ratio R = 0. The effects of the load ratio on both the repaired and not repaired plates, by two composite patches, which are boron/epoxy and graphite/epoxy, were investigated, as well as the effect of the plate material on plate life, comparing different materials

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Experimental study on mechanical performance of cracked aluminium alloy repaired with composite patch

Cited by 9 publications

References 14 publications

Mechanical Behavior of Single Patch Composite Repaired Al Alloy Plates: Experimental and Numerical Analysis

Mechanical Behavior of Single Patch Composite Repaired Al Alloy Plates: Experimental and Numerical Analysis

Karbon/epoksi ve E-cam/epoksi ile Onarılmış Çentikli Alüminyum 5754-H111 Charpy Darbe Tepkisi

Study of mechanical behavior by fatigue of a cracked plate repaired by different composite patches

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