Enhancing mode I inter-laminar fracture toughness of aluminum/fiberglass fiber-metal laminates by combining surface pre-treatments

Laban, Othman; Mahdi, E.

doi:10.1016/j.ijadhadh.2017.08.008

Cited by 30 publications

(5 citation statements)

References 34 publications

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“…Muitos métodos foram utilizados para modificar as condições físico-químicas da fibra de coco, utilizando água aquecida, solventes, soluções alcalinas, peróxidos, silanos. Entre os métodos químicos, o uso de solução alcalina de NaOH tem sido avaliado por diversos pesquisadores (BRIGIDA et al, 2010;LEÃO et al, 2015;ABDULLAH;AHMAD, 2012;MAY-PAT;GONZALES;HERRERA-FRANCO, 2013).…”

Section: Resultsunclassified

Estudo Por Imagens De Fibras De Coco Impregnadas De Cristais Pelo Contato Em Soluções Pozolâmicas De Metacaulim E Cinza Em Função Do Tempo / Imaging Study of Coconut Fibers Impregnated With Crystals by Contact in Pozzolamic Solutions of Metakaolin and Ash as a Function of Time

Lima

Gomes

Monteiro

et al. 2021

BJD

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A promoção de uma forte interação entre fibras vegetais e matrizes poliméricas, promete a formação de materiais de mais elevado desempenho mecânico. A busca por materiais com melhores propriedades oferece a sociedade produtiva a oportunidade de substituir os materiais convencionais por compósitos mais sustentáveis e amigável e ecologicamente mais corretos. Entretanto, as naturezas químicas das fibras vegetais e dos polímeros precisam se aproximar de forma a promover uma maior interação eletrostática e ou de ancoragem mecânica. Neste trabalho, a fibra de coco foi modificada de forma a promover a nucleação e o crescimento de cristais incrustados na superfície da fibra. Esta condição altera a morfologia e a condição química da fibra, podendo promover melhores interações com matrizes poliméricas. As fibras ficaram em contato com soluções pozolâmicas á temperatura e condições ambientais por intervalos diferentes de tempo. As imagens revelaram uma considerável população de cristais nas fibras que foram submetidas nestas condições.

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Section: Resultsunclassified

Estudo Por Imagens De Fibras De Coco Impregnadas De Cristais Pelo Contato Em Soluções Pozolâmicas De Metacaulim E Cinza Em Função Do Tempo / Imaging Study of Coconut Fibers Impregnated With Crystals by Contact in Pozzolamic Solutions of Metakaolin and Ash as a Function of Time

Lima

Gomes

Monteiro

et al. 2021

BJD

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“…Adhesion quality depends on two main factors, surface free energy and surface roughness. Therefore, surface treatment before adhesive bonding, in the production process of fiber metal hybrid laminates (FMLs), is the most critical step that can not be ignored (Laban, et. al., 2017).…”

Section: Fabrication Processmentioning

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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“…The results showed that the pattern can effectively improve the bonding strength of the untreated base. O. Laban et al 19 found that mechanical interlocking can act as a local obstacle to prevent crack propagation by comparing various surface pretreatment forms. Chong Zhang et al 20 treated the surface of the adhesive before bonding through laser processing, which showed a significant improvement compared to surface grinding and polishing, as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Strengthening the bonding interfaces of carbon reinforced aluminum laminate by slot structure

Liu,

Yang,

Bao

et al. 2024

Polymer Composites

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A reliable strategy to enhance the bonding ability in carbon reinforced aluminum laminates (CARALL) is proposed, which is based on the mechanical interlocking effect generated by the surface slot structure of aluminum alloy enhances the structural interface between fibers/resins and aluminum alloy. The characteristic of slot structure is determined, and the strengthening mechanism of bonding interfaces is revealed. The CARALL samples with slot structure are fabricated via an hot pressing process. The micro texture morphologies, mechanical, interlayer bonding properties under different conditions are studied. The results indicate that forming a slot structure on the aluminum surface is beneficial for improving the interfacial bonding performance. Compared with the non‐slotted structure, the interlayer type II fracture toughness of the slotted structure is increased by 112.99%. The slotted structure can reduce the defects at the interface between the layers and improve the interface bonding force. In this work, the interlaminar shear strength (ILSS) of the slotted structure sample was 27.08% higher than that of the non‐slotted structure sample.Highlights A slotted structure was proposed to solve the problem of insufficient bonding strength. A slotted structure consistent with the direction of adjacent fibers is designed. The interlayer type II fracture toughness of the slotted structure is increased by 112.99%. The final crack propagation of the slotted structure sample is reduced by 40%. The final failure area of the slotted structure sample is reduced by 53.85%.

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Enhancing mode I inter-laminar fracture toughness of aluminum/fiberglass fiber-metal laminates by combining surface pre-treatments

Cited by 30 publications

References 34 publications

Estudo Por Imagens De Fibras De Coco Impregnadas De Cristais Pelo Contato Em Soluções Pozolâmicas De Metacaulim E Cinza Em Função Do Tempo / Imaging Study of Coconut Fibers Impregnated With Crystals by Contact in Pozzolamic Solutions of Metakaolin and Ash as a Function of Time

Estudo Por Imagens De Fibras De Coco Impregnadas De Cristais Pelo Contato Em Soluções Pozolâmicas De Metacaulim E Cinza Em Função Do Tempo / Imaging Study of Coconut Fibers Impregnated With Crystals by Contact in Pozzolamic Solutions of Metakaolin and Ash as a Function of Time

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

Strengthening the bonding interfaces of carbon reinforced aluminum laminate by slot structure

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