The assessment of the compressive strength of fibre metal laminates after low-velocity impact

Jakubczak, Patryk; Podolak, Piotr; Droździel-Jurkiewicz, Magda

doi:10.1016/j.compstruct.2023.117208

Cited by 8 publications

(1 citation statement)

References 35 publications

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“…Ti‐FMLs exhibit enhanced damage tolerance due to the composite layers which is valuable in situations where the material may experience high velocity impacts, 13,14 cracks, or other forms of damage. The impact response of Ti‐FML reported to be affected by the type of fiber used, where the UHMWPE fibers outfitted the carbon fibers 15,16 . The thickness of the core composite layer reported to enhance the energy absorbing capacity of Ti‐FML 17 .…”

Section: Introductionmentioning

confidence: 99%

Adhesion strength and mechanical properties of nanoclay modified hybrid kevlar/jute‐epoxy fiber metal laminate

Naveen,

Kamaraj,

Ponnarengan

2024

Polymer Composites

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Delamination due to interfacial debonding between metal/composite is identified as a potential failure mechanism of fiber metal laminates (FML). In the present study, titanium based fiber metal laminate (Ti‐FML) were fabricated using different wt% of nanoclay modified epoxy as adhesive. Kevlar/jute fibers bidirectionally woven mat was used to prepare the composite layer in the laminate. The laminates produced using compression molding techniques were studied for tensile, flexural, impact load bearing capacity and adhesive strength based on lap shear and peel test following ASTM standards. Lap shear adhesive strength of nanoclay modified epoxy was enhanced to 27 MPa and interlaminar peel strength was increased to 16.8 N/mm in the laminates, when the amount of nanoclay was increased to 8 wt%. Matrix crack deflection and crack bridging due to the presence of nanoclay was identified as potential mechanism for increasing the adhesive strength of epoxy. Enhanced adhesive strength resulted in improved mechanical characteristics of Ti‐FML, exhibiting notable increases in tensile load bearing capacity at 15.5 kN, flexural peak load at 0.36 kN, and bending strength at 890 MPa, achieved with a 7 wt% increase in nanoclay content. Fiber breakage and plastic deformation of metal combinedly developed the failure deformation, load bearing and energy absorption capacity of the laminate. Hybridization of fibers kevlar/jute played a significant role in enhancing the energy absorption capacity of laminates. The developed material can find applications in aerospace structures, automotive components, and marine environments where superior mechanical performance and durability are essential.Highlights Nanoclay‐modified titanium‐based FMLs with kevlar/jute hybrid fiber mats prepared. The adhesive strength of nanoclay‐modified epoxy increased due to crack deflection and bridging, enhancing the load‐bearing capacity of the titanium FML. Improved adhesive strength controlled delamination failure in tensile and flexural tests. The laminate's impact energy absorption capacity was enhanced by nanoclay, hybrid kevlar/jute fiber composite, and titanium ductility.

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Section: Introductionmentioning

confidence: 99%

Adhesion strength and mechanical properties of nanoclay modified hybrid kevlar/jute‐epoxy fiber metal laminate

Naveen,

Kamaraj,

Ponnarengan

2024

Polymer Composites

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Experimental investigation on the compression‐after‐double‐impact behaviors of GFRP laminates embedded with aluminum mesh

Xie,

Wan,

Wang

et al. 2024

Polymer Composites

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Drawing inspiration from carp scales to manufacture specimens, we investigated the effect of embedding aluminum mesh on the two‐point low‐velocity impact (LVI) and compression‐after‐double‐impact (CAI) behavior of glass fiber‐reinforced polymer (GFRP) laminates, fabricated via the hot‐pressing process, varying lay‐up angle of both fiber and aluminum mesh. INSTRON 9340 performs LVI loading tests at the same impact distance and with four different incidence energies. Further, in addition to their post‐impact damage characterized by an ultrasonic C‐scan, their failure evolution of compression after impact was presented according to strain contour obtained from the digital image correlation (DIC) and scanning electron microscope (SEM) technique. After comparing the response history and damage morphology of various panels, it was found that the addition of aluminum mesh could improve the ductility of the panels and promote their performance in low‐velocity impact events. This enhancement stems from the ability of the ductile aluminum mesh net to effectively absorb and redistribute impact energy in the vicinity of the impact point. It is noteworthy that the damaged area of specimens with different layup angles following low‐velocity impact exhibits the following pattern: VG8VAl > VG8IAl > IG8IAl.Highlights Mechanical behavior on two‐point LVI test of laminates varying layup angles. The LVI and CAI performance was analyzed by C‐scan, SEM, and DIC. Compressive failure mode is brittle fracture at the impact area. The resin fills holes in the aluminum mesh to improve sample impact property. Laminates with aluminum mesh have less damage but a larger damage area.

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Recent approaches of interface strengthening in fibre metal laminates: Processes, measurements, properties and numerical analysis

Bakhbergen,

Abbassi,

Kalimuldina

et al. 2024

Composites Part B: Engineering

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The assessment of the compressive strength of fibre metal laminates after low-velocity impact

Cited by 8 publications

References 35 publications

Adhesion strength and mechanical properties of nanoclay modified hybrid kevlar/jute‐epoxy fiber metal laminate

Adhesion strength and mechanical properties of nanoclay modified hybrid kevlar/jute‐epoxy fiber metal laminate

Experimental investigation on the compression‐after‐double‐impact behaviors of GFRP laminates embedded with aluminum mesh

Recent approaches of interface strengthening in fibre metal laminates: Processes, measurements, properties and numerical analysis

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