Metal-metal and metal-composite joints with 3D printed aluminium substrates: effect of surface treatment on the mode I fracture toughness

Gulino, Michele; Moroni, Fabrizio; Pirondi, Alessandro

doi:10.1080/00218464.2023.2285074

Cited by 3 publications

(1 citation statement)

References 42 publications

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“…When the wet prepreg comes in contact with the surface, the resin ows around these particles, increasing the contact area and forming effective particle hooks within the adhesive. As observed by [21,42] on different alloys, this interlock ultimately leads to a stronger bond between AMPO M789 and epoxy, outperforming pure adhesive strength alone without requiring additional surface treatment methods [43]. More signi cant resin grafts with pulled-out bers (Fig.…”

Section: Morphological Characterization Of the Fractured Surfacementioning

confidence: 66%

Enhancing the Robustness of Hybrid Metal-Composite Connections through 3D printed Micro Penetrative Anchors

Raimondi,

Tomesani,

Zucchelli

2024

Preprint

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This work proposes a novel solution for manufacturing hybrid metal-composite joints, in which different pin shapes are evaluated for their capability to penetrate long carbon fiber epoxy composites successfully and for the mechanical behavior determined by each configuration. On the metal side, pins are manufactured by Laser Powder Bed Fusion (LPBF), downsizing the currently adopted solutions and, at the same time, developing new blocking features aimed at enhancing the mechanical properties of the joint. The different configurations were evaluated in two distinct experiments: the first to evaluate the induced defects in the composite substrate and the second to characterize the mechanical behavior of the joint. It emerges that smaller pins produce much less damage and misalignments in the composite structure with respect to the conventional pin solution, whereas the new "blocking features" configurations consistently increase maximum pullout load and energy with respect to the conventional pin solution, with the same level of fiber damage.

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Section: Morphological Characterization Of the Fractured Surfacementioning

confidence: 66%

Enhancing the Robustness of Hybrid Metal-Composite Connections through 3D printed Micro Penetrative Anchors

Raimondi,

Tomesani,

Zucchelli

2024

Preprint

View full text Add to dashboard Cite

show abstract

Experimental and numerical study on mechanical behavior of 3D printed adhesive joints with polycarbonate substrates

Öztürk,

Marques,

Carbas

et al. 2024

J of Applied Polymer Sci

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Adhesive joints play a crucial role in enhancing the structural integrity and performance of 3D printed parts. The purpose of this study is to investigate the failure load and behavior of polycarbonate (PC) single lap joints (SLJs) produced by fused deposition modeling (FDM) using experimental and finite element analysis (FEA) methods. The FEA of joints presents a new approach by integrating PC substrates with Hill yield criterion, transversely isotropic material and adhesive layer with cohesive zone modeling (CZM). The study focused on the effect of printing angles (0°, 45°, and 90°) and overlap lengths (12.5 and 25 mm) on the performance of SLJs. The influence of 3D printing parameters on the mechanical behavior of PC joints was investigated by tensile testing of SLJs. The experimental failure load was 1586 N for a 12.5 mm joint at 90° and 4115 N for a 25.4 mm joint at 0°. Comparison of the experimental and FEA failure loads of the joints showed maximum and minimum differences of 11.98% and 1.34%, respectively. This result showed that the proposed model is applicable for determining the joint strength as a function of the printing angle and monitoring the joint damage behavior.

show abstract

Enhancing the Robustness of Hybrid Metal-Composite Connections Through 3D Printed Micro Penetrative Anchors

Raimondi,

Tomesani,

Zucchelli

2024

Appl Compos Mater

View full text Add to dashboard Cite

This work proposes a novel solution for manufacturing hybrid metal-composite joints, in which different pin shapes are evaluated for their capability to penetrate long carbon fiber epoxy composites successfully and for the mechanical behavior determined by each configuration. On the metal side, pins are manufactured by Laser Powder Bed Fusion (LPBF), downsizing the currently adopted solutions and, at the same time, developing new blocking features aimed at enhancing the mechanical properties of the joint. The different configurations were evaluated in two distinct experiments: the first to evaluate the induced defects in the composite substrate and the second to characterize the mechanical behavior of the joint. It emerges that smaller pins produce much less damage and misalignments in the composite structure with respect to the conventional pin solution, whereas the new “blocking features” configurations consistently increase maximum pullout load and energy with respect to the conventional pin solution, with the same level of fiber damage.

show abstract

Metal-metal and metal-composite joints with 3D printed aluminium substrates: effect of surface treatment on the mode I fracture toughness

Cited by 3 publications

References 42 publications

Enhancing the Robustness of Hybrid Metal-Composite Connections through 3D printed Micro Penetrative Anchors

Enhancing the Robustness of Hybrid Metal-Composite Connections through 3D printed Micro Penetrative Anchors

Experimental and numerical study on mechanical behavior of 3D printed adhesive joints with polycarbonate substrates

Enhancing the Robustness of Hybrid Metal-Composite Connections Through 3D Printed Micro Penetrative Anchors

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