Dynamic behavior of screwed joints for CFRP composite laminate structures under impact loading

Can, Ahmet; Meram, Ahmet

doi:10.1016/j.jmapro.2022.01.016

Cited by 8 publications

(4 citation statements)

References 33 publications

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“…The pre-hole operations were performed using a tungsten steel bit, and the tapping operations were implemented with machine taps at a cutting speed of 25 m/min. 32 After the tapping process use the tap wrench along the axis of the hole in the direction of slow rotation and move up and down. The tap can be smoothly rotated and no chip generation state indicates that the tapping process has been completed.…”

Section: Specimen Preparationmentioning

confidence: 99%

“…Freitas et al 31 highlighted that the coating of the tap and the tapping speed are crucial factors affecting the tapping force during the threading process of CFRP. Ahmet et al 27,32 Explored the load carrying capacity of CFRP composite laminate screwed joints under various hole diameters through compression tests. Punching experiments on CFRP composite screwed joints revealed that the maximum failure load increases with an increase in hole diameter.…”

Section: Introductionmentioning

confidence: 99%

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Study of the tensile mechanical properties and failure mechanisms of CFRP screwed joints

He,

Yang,

Liu

et al. 2024

Journal of Composite Materials

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Removable joint technology is commonly used in composite laminates for various load-bearing structures. However, existing research primarily focuses on bolted joints, there is relatively limited research on screwed joints in composite materials. This study investigates the influence of connected layer thickness and hole diameter on the tensile behavior of threaded joints in carbon fiber-reinforced polymer (CFRP) laminates. After fabricating different CFRP screwed joint specimens, tensile tests were conducted. The digital image correlation (DIC) technique captured the deformation process. The experiment results indicate a significant increase in load-bearing capacity with the increase in diameter. For instance, joints with an 8 mm diameter exhibited a load-bearing capacity of 10.82 kN. The increase in the connected layer thickness correspondingly enhanced the load-bearing capacity of the joint. The joint with a thickness of 7 mm had the highest load-bearing capacity of 8.83 kN. Besides, with the increase in the thickness of the connected layer, the failure mode transitioned from shear failure in the connected layer to screw pull-out. The tilt angle of the screw during the pull-out process also decreases with the increase in the connected layer thickness. Strain and out-of-plane displacement measurements under ultimate load conditions verify these observations.

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Section: Specimen Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study of the tensile mechanical properties and failure mechanisms of CFRP screwed joints

He,

Yang,

Liu

et al. 2024

Journal of Composite Materials

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“…To establish a foundational understanding of the field of materials science, a plethora of fundamental research endeavors have been undertaken to investigate their mechanical behavior. These investigations encompass both static (Ahmed & Wei, 2014;Humeau, Davies, & Jacquemin, 2018;Li, Mines, & Birch, 2001) and dynamic (Can & Meram, 2022;Capozucca & Bonci, 2015;Hong et al, 2013) analyses aimed at extracting the mechanical properties essential for material evaluation. The majority of this research is dedicated to studying the mechanical behavior of unidirectional (UD), bidirectional, or even short fiber laminates under various stress conditions.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of the influence of layers number and their orientation in a CFRP using improved ANN based on Enhanced Jaya

Oulad Brahim

2024

HCMCOUJS - Advances in Computational Structures

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The advancement of technology in the field of artificial intelligence has facilitated significant progress in various areas, particularly in optimizing the structural configuration of multilayer composites. This study's primary objective is to investigate how geometric parameters, such as fiber orientation and the number of layers influence the mechanical properties of these materials. To predict fracture toughness in bending tests, we employed a hybrid optimization technique (E-Jaya-ANN) and compared it with the Jaya-ANN method to assess the improved approach's accuracy. Furthermore, we developed a numerical model based on the Hashin damage criterion using ABAQUS software to anticipate the response of composite specimens (CFRP) when subjected to a bending load. We validated the reliability of the code results by comparing them with experimental data. Subsequently, we generated a series of numerical results, representing various practical scenarios, to serve as the foundation for training an artificial neural network (ANN). This enabled us to obtain an enhanced architecture for the laminate layers.

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“…With the hybrid bonded-riveted method, Li et al fabricated CFRP/Al joints and studied the effects of high-speed loading and environmental factors on the dynamic responses of the joints [ 16 ]. Can et al analyzed the dynamic behavior of the screwed joints in CFRP composite laminates, and the experimental results showed that the dynamic failure loads for the screwed joints ranged from 27.55 to 78.12 kN [ 17 ]. Cococcetta et al studied the effect of the post-processing technique on 3D-printed CFRP composites, and they found that the cryogenic machining method could bring down the surface roughness from 10 μm to 1 μm [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

An Injecting Molding Method for Forming the HFRP/PA6 Composite Parts

Wei

et al. 2022

Polymers

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Carbon/glass fiber-reinforced polymer hybrid composite (HFRP) has the advantages of a light weight and high strength. For the lightweight design of automobile parts, composite parts made of HFRP and polymer materials are increasingly in demand. The method of the injection molding is usually adopted to fabricate composite part with HFRP and polymer materials. The connecting strength between the two materials has an important influence on the service life of the composite part. In this paper, HFRP and polyamide-6 (PA6) were used to fabricate a composite part by the injection molding method. In order to improve the connecting strength between HFRP and PA6, a kind of micro-grooves was fabricated on the HFRP surface. The micro-grooves on the surface of the HFRP provided sufficient adhesion and infiltrating space of molten PA6 material into the mold. In addition, the glass fiber in HFRP can also be used as nucleating agent to facilitate the rapid crystallization of PA6. The micro-grooves on the surface of HFRP were embedded into PA6 like nails, which could improve the connecting strength at the interface effectively. The paper investigated the effects of mold temperature, injection pressure, holding pressure and holding time on the injection quality and connecting strength of composite parts in detail. With a mold temperature of 240 °C, an injection pressure of 8 MPa, a holding pressure of 8 MPa and a holding time of 3 s, the maximum tensile strength of 10.68 MPa was obtained for the composite part. At the effect of micro-grooves, the tensile strength of the composite part could be increased by 126.27%.

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Dynamic behavior of screwed joints for CFRP composite laminate structures under impact loading

Cited by 8 publications

References 33 publications

Study of the tensile mechanical properties and failure mechanisms of CFRP screwed joints

Study of the tensile mechanical properties and failure mechanisms of CFRP screwed joints

Numerical study of the influence of layers number and their orientation in a CFRP using improved ANN based on Enhanced Jaya

An Injecting Molding Method for Forming the HFRP/PA6 Composite Parts

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