Impact and post-impact response of lightweight CFRP/wood sandwich composites

Basha, Muhammad; Wagih, A.; Melaibari, Ammar A.; Lubineau, Gilles; Abdraboh, A. M.; Eltaher, Mohamed A.

doi:10.1016/j.compstruct.2021.114766

Cited by 35 publications

(14 citation statements)

References 42 publications

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“…Figure 5 shows the mechanical response of three types of specimen as load–displacement curves under a series of impact energies. These initial slopes of the load–displacement curves are very similar to the linear increase in the first stage and the difference in the subsequent stage 29 . The load obviously decreased after reaching the first peak, and then, it continued to increase to the second peak under impact with an energy of 3 and 6 J.…”

Section: Resultssupporting

confidence: 69%

“…These initial slopes of the loaddisplacement curves are very similar to the linear increase in the first stage and the difference in the subsequent stage. 29 The load obviously decreased after reaching the first peak, and then, it continued to increase to the second peak under impact with an energy of 3 and 6 J. The UC specimen had a higher impact load and displacement at the first peak compared to that of the discontinuous specimen.…”

Section: Impact Response Of Various Laminatesmentioning

confidence: 88%

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Exploration of impact response and damage mechanism of discontinuous CFRP laminates subjected to low velocity impact

Xiao

et al. 2023

Polymer Composites

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Carbon fiber‐reinforced polymer composites (CFRPs) are widely used in many fields because of their excellent mechanical properties; however, they are very sensitive to low velocity impact. A new‐type biomimetic structure, which has a “bricks‐and‐mortar” arrangement of nacre from mollusk shells, was designed and manufactured for enhancing the impact resistance of the CFRPs. The impact response and absorption of impact energy of this structure were also investigated. Impact damage forms of the biomimetic structure were analyzed based on the surface and internal morphologies. The results indicate that biomimetic structure can decrease the impact damage of the CFRPs. Two damage behaviors of the biomimetic structure were observed under relatively higher impact energy. The discontinuous structure reduces the damage using a smaller load for the first damage and a larger deformation for the second damage, which improves the impact resistance of the CFRPs. The discontinuous structure restrains longitudinal crack propagation to a certain extent, effectively reducing the damaged area of the CFRPs. Thus, the proposed structure can increase the strength retention rate of the material by about 5%. In addition, the compression after impact damage modes of CFRPs with three types of structure are summarized and classified originally.

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Section: Resultssupporting

confidence: 69%

Section: Impact Response Of Various Laminatesmentioning

confidence: 88%

Exploration of impact response and damage mechanism of discontinuous CFRP laminates subjected to low velocity impact

Xiao

et al. 2023

Polymer Composites

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“…They stated that wood cells deformed during impact and hence dissipated more energy. From past research, it is clear that a variety of factors influenced the outcome of hybrid composites’ low-velocity impact performance [ 156 ].…”

Section: Perforation Resistance Of Hybrid Compositementioning

confidence: 99%

Physical, Mechanical and Perforation Resistance of Natural-Synthetic Fiber Interply Laminate Hybrid Composites

et al. 2022

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Natural and synthetic fibres have emerged in high demand due to their excellent properties. Natural fibres have good mechanical properties and are less expensive, making them a viable substitute for synthetic fibers. Owing to certain drawbacks such as their inconsistent quality and hydrophilic nature, researchers focused on incorporating these two fibres as an alternative to improve the limitations of the single fibre. This review focused on the interply hybridisation of natural and synthetic fibres into composites. Natural fibres and their classifications are discussed. The physical and mechanical properties of these hybrid composites have also been included. A full discussion of the mechanical properties of natural/synthetic fibre hybrid composites such as tensile, flexural, impact, and perforation resistance, as well as their failure modes, is highlighted. Furthermore, the applications and future directions of hybrid composites have been described in details.

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“…Sandwich composite structures with continuous fiber composite face sheets have been found very efficient by the aerospace and automotive industries for impact applications because of their high bending stiffness to mass ratio and impact energy absorption. [11][12][13][14][15] Zhang et al 11 investigated drop mass impact and compression tests after impact on sandwich composite structure with honeycomb core and found a decrease of compression strength up to 25%-30% compared with undamaged sandwich composite. The sandwich composites are subjected to fiber-metal skin delamination, foam core cracking, and skin-core interface debonding.…”

Section: Introductionmentioning

confidence: 99%

Effect of interface temperature on low‐velocity impact response of injection over‐molded short/continuous fiber reinforced polypropylene composites

Paramasivam,

Mallina,

Ramachandran

et al. 2023

Polymer Composites

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Injection over‐molded short/continuous fiber reinforced composites are a unique class of materials for fabricating lightweight components having complex geometries in automotive manufacturing due to their higher specific mechanical properties, lower assembly cost, and short production cycle time. The influence of interface temperature on the low‐velocity impact response of short/continuous fiber‐reinforced polypropylene was experimentally investigated by varying the melt temperature. The over‐molded specimens fabricated at an interface temperature considerably higher than the melting point of polypropylene exhibited a 12% enhanced peak load with less impact damage compared with specimens over‐molded at a lower interface temperature. Optical analysis of impacted specimens over‐molded at lower interface temperature revealed interface debonding and insert delamination. Whereas insert delamination alone was observed for the specimens fabricated at higher interface temperature. The specimens over‐molded at high interface temperature exhibited less impact energy absorption and high compression strength after impact because of their strong interfacial adhesion.Highlights Impact energy absorption is less if melt temperature is high in injection over‐molding. Higher melt temperature enhances interface bonding by raising interface temperature. Interface debonding and insert delamination are the dominant impact failure modes. The compression strength after impact has increased with higher melt temperature. Impact and compression strength after impact is governed by the interfacial strength.

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Impact and post-impact response of lightweight CFRP/wood sandwich composites

Cited by 35 publications

References 42 publications

Exploration of impact response and damage mechanism of discontinuous CFRP laminates subjected to low velocity impact

Exploration of impact response and damage mechanism of discontinuous CFRP laminates subjected to low velocity impact

Physical, Mechanical and Perforation Resistance of Natural-Synthetic Fiber Interply Laminate Hybrid Composites

Effect of interface temperature on low‐velocity impact response of injection over‐molded short/continuous fiber reinforced polypropylene composites

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