Preliminary studies on electromagnetic forming of aluminum/polymer/aluminum sandwich sheets

Khardin, M. V.; Harhash, Mohamed; Chernikov, D. G.; Glushchenkov, V. A.

doi:10.1016/j.compstruct.2020.112729

Cited by 9 publications

(5 citation statements)

References 15 publications

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“…Recently, these forming methods were utilised to form steel-based FMLs, but the latest research papers have been focused mainly on aluminium-based composites. Researchers consider the configuration of the material layers [374][375][376][377] or the process parameter setup [86,[378][379][380][381][382][383][384][385][386] to reduce material defects and go beyond the current forming limits caused mainly by breakage and wrinkling. In order to improve the formability of the layers of FRP, many studies are focused on die forming at elevated temperatures [387][388][389].…”

Section: Die Formingmentioning

confidence: 99%

“…The occurrence of compressive strains in EMF of the bottom side could increase formability but, on the other hand, could initiate wrinkling. Khardin et al [381] investigated an Al-polymer-Al (0.3 mm + 0.6 mm + 0.3 mm) sandwich using the electromagnetic bending method. Blanks were made of two AW-Al Mn1Mg0.5 sheets and a thermoplastic polyolefin middle layer.…”

Section: Electromagnetic Formingmentioning

confidence: 99%

“…The occurrence o compressive strains in EMF of the bottom side could increase formability but, on the other hand, could initiate wrinkling. Khardin et al [381] investigated an Al-polymer-A (0.3 mm + 0.6 mm + 0.3 mm) sandwich using the electromagnetic bending method. Blank were made of two AW-Al Mn1Mg0.5 sheets and a thermoplastic polyolefin middle layer Glushchenkov et al [380] applied EMF to a five-layer metal-polymer composite fabricated with a 0.3 mm thickness commercial aluminium with carbon fibre interlayers bounded with two-way reinforced epoxy laminate.…”

Section: Electromagnetic Formingmentioning

confidence: 99%

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New Advances and Future Possibilities in Forming Technology of Hybrid Metal–Polymer Composites Used in Aerospace Applications

et al. 2021

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Fibre metal laminates, hybrid composite materials built up from interlaced layers of thin metals and fibre reinforced adhesives, are future-proof materials used in the production of passenger aircraft, yachts, sailplanes, racing cars, and sports equipment. The most commercially available fibre–metal laminates are carbon reinforced aluminium laminates, aramid reinforced aluminium laminates, and glass reinforced aluminium laminates. This review emphasises the developing technologies for forming hybrid metal–polymer composites (HMPC). New advances and future possibilities in the forming technology for this group of materials is discussed. A brief classification of the currently available types of FMLs and details of their methods of fabrication are also presented. Particular emphasis was placed on the methods of shaping FMLs using plastic working techniques, i.e., incremental sheet forming, shot peening forming, press brake bending, electro-magnetic forming, hydroforming, and stamping. Current progress and the future directions of research on HMPCs are summarised and presented.

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Section: Die Formingmentioning

confidence: 99%

Section: Electromagnetic Formingmentioning

confidence: 99%

Section: Electromagnetic Formingmentioning

confidence: 99%

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New Advances and Future Possibilities in Forming Technology of Hybrid Metal–Polymer Composites Used in Aerospace Applications

et al. 2021

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“…At present, a great challenge on the application of the sandwich panels is that the core polymer layer is found to fail earlier than the skin metal layer due to its low resistance to normal pressure. In order to increase the formability of polymer layers, polyethylene [26], polymethyl-methacrylate (PMMA) [27] and polypropylene-polyethylene [28] were applied as adhesion layers. In addition, a density-based topology optimization method was designed and integrated with a multistage algorithm (GA) to optimise the formability of the carbon-fibre-reinforced thermoplastics as the core material of the sandwich panels [29].…”

Section: Introductionmentioning

confidence: 99%

Development of a Formability Prediction Model for Aluminium Sandwich Panels with Polymer Core

Liu

et al. 2022

Materials

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In the present work, the compatibility relationship on the failure criteria between aluminium and polymer was established, and a mechanics-based model for a three-layered sandwich panel was developed based on the M-K model to predict its Forming Limit Diagram (FLD). A case study for a sandwich panel consisting of face layers from AA5754 aluminium alloy and a core layer from polyvinylidene difluoride (PVDF) was subsequently conducted, suggesting that the loading path of aluminium was linear and independent of the punch radius, while the risk for failure of PVDF increased with a decreasing radius and an increasing strain ratio. Therefore, the developed formability model would be conducive to the safety evaluation on the plastic forming and critical failure of composite sandwich panels.

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“…High velocity forming (HVF) can improve the formability of metal sheet in comparison to conventional quasistatic metal sheet forming, so HVF has attracted a great attention [1]. HVF methods at different length scales [2] include electromagnetic forming [3], explosive forming [4] and laser dynamic forming (LDF) [5]. Explosive forming and electromagnetic forming are applicable for macroforming.…”

Section: Introductionmentioning

confidence: 99%

Dynamic failure mechanism of copper foil in laser dynamic flexible forming

Shen

Zhang

Пин

et al. 2020

Materials Science-Poland

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Laser dynamic flexible forming (LDFF) is a novel high velocity forming (HVF) technology, in which the foil metal is loaded by laser shock wave. Strain localization is readily to occur around the bulge edge, which will result in the ultimate dynamic failure. In this work, the microstructures before and after dynamic fracture are characterized by transmission electron microscopy (TEM) to investigate the dynamic failure mechanism. The plastic deformation regions of copper foil are composed of shock compression, strain localization and bulge. Microstructure refinement was observed in three different plastic deformation regions, particularly, dynamic recrystallization (DRX) occurs in the strain localization and bulge regions. In bulge region, extremely thin secondary twins in the twin/matrix (T/M) lamellae are formed. The microstructure features in the strain localization region show that superplastic flow of material exists until fracture, which may be due to DRX and subsequent grain boundary sliding (GBS) of the recrystallized grains. The grain coarsening in strain localization region may degrade the material flowing ability which results in the dynamic fracture.

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Preliminary studies on electromagnetic forming of aluminum/polymer/aluminum sandwich sheets

Cited by 9 publications

References 15 publications

New Advances and Future Possibilities in Forming Technology of Hybrid Metal–Polymer Composites Used in Aerospace Applications

New Advances and Future Possibilities in Forming Technology of Hybrid Metal–Polymer Composites Used in Aerospace Applications

Development of a Formability Prediction Model for Aluminium Sandwich Panels with Polymer Core

Dynamic failure mechanism of copper foil in laser dynamic flexible forming

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