Continuously Produced Honeycomb Sandwich Materials for Automotive Applications

Pflug, Jochen; Fan, Xinyu; Lavalaye, Jorn; Verpoest, Ignaas; Bratfisch, Philipp; Vandepitte, Dirk

doi:10.4271/2002-01-1272

Cited by 14 publications

(13 citation statements)

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“…The faces, each of thickness t , carry most of the load, so they must be stiff and strong; and they form the exterior surfaces of the panel so they must also tolerate the environment in which it operates. The core, of thickness c , occupies most of the volume, it must be light, and stiff and strong enough to carry the shear stresses necessary to make the whole panel behave as a load‐bearing unit 10–15 …”

Section: Approximate Models For Hybrid Propertiesmentioning

confidence: 99%

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Hybrid Materials to Expand the Boundaries of Material‐Property Space

Ashby¹

2011

J. Am. Ceram. Soc.

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The materials we use today for mechanical design are the outcome of at least 3000 years of development, much of it empirical but much the outcome of systematic science. Both approaches have been motivated by the desire for stiffer, stronger, more durable, and lighter structures, progressively populating material property “space”. We first examine the extent to which this space is now filled and estimate the ultimate constraints on this filling. Strategies for expanding the filled regions further include hybrid material design—making materials by combining two or more monolithic materials in chosen configurations and connectivity. Here we explore two classes of hybrid—lattice materials and sandwich structures—developing ways of comparing their properties with those of conventional monolithic materials. The comparison reveals the potential of hybrids. This paper builds on ideas that have grown from a long and rewarding collaboration with Tony Evans with whom it has been a privilege to have worked.

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Section: Approximate Models For Hybrid Propertiesmentioning

confidence: 99%

“…The load configuration determines the constant values ( B 1 , B 2 , B 3 , and B 4 ) as summarized in Table II. Comparison with (where is the second moment of area, ) for the “equivalent” homogeneous material gives the equivalent flexural modulus 6,10–14 : …”

Section: Approximate Models For Hybrid Propertiesmentioning

confidence: 99%

Hybrid Materials to Expand the Boundaries of Material‐Property Space

Ashby¹

2011

J. Am. Ceram. Soc.

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“…This enforces the necessity to search for new, more rational ways of using them. Lightweight cellular boards have been implemented in the furniture industry directly from door manufacturing factories [5,22]. a significant impact on the strength of wood materials, including light sandwich panels.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research and Numerical Analysis of the Elastic Properties of Paper Cell Cores before and after Impregnation

2020

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The research hypothesis states that the impregnation of the honeycomb paper core of lightweight sandwich panels with modified starch, sodium silicate and epoxy resin (LiquidWood®) resin has a significant effect on its elastic properties. In this study, a recycled paper was used in three thicknesses, seven types of cell shapes, including two after numerical optimization and three types of impregnating agents. The method of digital image analysis determined the elastic constants of manufactured paper cores, which were subjected to axial compression in two directions. Based on the experimental results, elastic constants of the cores were calculated and compared with the results of numerical calculations. It has been shown that each of the impregnating solutions used improved the stiffness of the paper core. The best results were obtained for LiquidWood® epoxy resin and modified starch. An important parameter of cell geometry affecting their rigidity is the angle of the cell wall φ, as well as the arrangement of the common cell wall in relation to the direction of load. The numerical models developed were positively verified.

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“…Taking this factor into consideration, it encourages the search for new, durable, biobased composites, which could be used as a replacement for conventional honeycomb [ 14 , 15 , 16 ]. Cellular honeycombs have a wide range of implementation from furniture manufacture to the door industry [ 17 ]. Attempts have also been made to find a replacement for the conventional paper core with a corrugated core made out of wood fibres [ 18 , 19 ], plywood, or HDF [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Bending Behavior of Lightweight Wood-Based Sandwich Beams with Auxetic Cellular Core

Peliński

Smardzewski

2020

Polymers

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The work concerns a three-point bending test of beams made of plywood, high density fibre boards, cardboard, and wood-epoxy mass. The goal of the investigation was to determine the effect of thickness and type of wood-based facings on stiffness, strength, ability to absorb, and dissipate the energy of sandwich beams with an auxetic core. The cognitive goal of the work was to demonstrate the possibility of using recycled materials for facings and cores instead of popular wood composites. Experimental studies and numerical calculations were performed on correctly calibrated models. Experimental studies have shown that the beams with HDF facings (E = 1528 MPa, MOR = 12.61 MPa) and plywood facings (E = 1248–1395 MPa, MOR = 8.34–10.40 MPa) have the most favourable mechanical properties. Beams with plywood facings also have a good ability to absorb energy (1.380–1.746 J), but, in this respect, the beams manufactured of HDF (2.223 J) exhibited better capacity. The use of an auxetic core and facings of plywood and cardboard significantly reduces the amount of dissipated energy (0.0093 J, 0.0067 J). Therefore, this type of structures can be used for modeling beams carrying high deflections.

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Continuously Produced Honeycomb Sandwich Materials for Automotive Applications

Cited by 14 publications

References 0 publications

Hybrid Materials to Expand the Boundaries of Material‐Property Space

Hybrid Materials to Expand the Boundaries of Material‐Property Space

Experimental Research and Numerical Analysis of the Elastic Properties of Paper Cell Cores before and after Impregnation

Bending Behavior of Lightweight Wood-Based Sandwich Beams with Auxetic Cellular Core

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