Manufacturing of Threads Direct into a Carbon Fibre Reinforced Polymer

Zemann, Richard

doi:10.1016/j.matpr.2016.03.001

Cited by 7 publications

(2 citation statements)

References 2 publications

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“…This study focuses on investigating screwed connections in composite materials. Richar 28 conducted tensile tests on CFRP screws after fixing the threads. The M5 and M8 threads exhibited good load capacity with an average of 4.42 kN and 6.56 kN, respectively.…”

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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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: 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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“…A usual approach to realize such a bolted connection within FRP is the use of bonded or during the lamination process, integrated threaded metallic inserts or outserts. Although it is possible to realize screwed joints in FRP parts by using these inserts or outserts, it requires quite a lot of effort [8,9]. Therefore, the aim of this study is to investigate the effects of the most effective profile on the pullout strength were investigated in screw pull tests using 5 different thread profiles and bolts.…”

Section: Introductionmentioning

confidence: 99%

Cam Elyaf Takviyeli Polimer Kompozit Malzemelerde Farklı Vida Profillerinin Sıyırma Kuvveti Üzerine Etkisi

Ünal

2018

Cumhuriyet Science Journal

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Recently, the usage of polymer composite materials has been increased significantly. Glass fiber reinforced polymer (GFRP) composite materials are preferred for different areas such as aviation, railway, energy, defense and so on due to their high thermal and tensile strength. The most common methods for joining composite machine parts are bolts and rivets, etc. In this study, Pullout tests were performed with metric, knuckle, buttress, trapezoid and square profile screws to determine the effect of different screw threads on the pullout force. The bolts were taken to have a diameter of 16 mm and feed of 2 mm. In addition, a finite element model was created for determining the von-Mises equivalent stresses and total deformation. The metric thread profile gave the best results both in FEA and in experimental studies. The numerical and experimental results were in a good agreement could be concluded.

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