Structure–property relations for balsa wood as a function of density: modelling approach

Shishkina, Oksana; Lomov, Stepan Vladimirovitch; Verpoest, Ignace; Gorbatikh, Larissa

doi:10.1007/s00419-014-0833-2

Cited by 16 publications

(5 citation statements)

References 38 publications

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“…In this case researchers establish their numerical models inspired from natural materials using direct measurements of microstructural features, for instance, from CT images rather than converting 3D segmented image data directly into image-based meshes. This IBSim approach has been applied in investigations of wood [ 323 ], marine animals [ 313 ], balsa trunk and branches [ 324 , 325 ], hedgehog quill [ 326 ] and spine [ 327 ]. New structures can be designed based on the architecture of these materials.…”

Section: Review Of Hvm Applications Of Ibsimmentioning

confidence: 99%

“…Furthermore, balsa trunk and branches hosting vertical hexagonal columns (cellular material) can be implemented for engineering applications because of their ability to hold high stiffness under tension and shear [ 325 ], and strength under compression [ 326 ]. The cylindrical structure of hedgehog quills were the inspiration for stiffeners due to their bending, ovalisation and buckling resistances [ 326 ].…”

Section: Review Of Hvm Applications Of Ibsimmentioning

confidence: 99%

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A Review of Image-Based Simulation Applications in High-Value Manufacturing

Evans

Sozumert

Keenan

et al. 2023

Arch Computat Methods Eng

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Image-Based Simulation (IBSim) is the process by which a digital representation of a real geometry is generated from image data for the purpose of performing a simulation with greater accuracy than with idealised Computer Aided Design (CAD) based simulations. Whilst IBSim originates in the biomedical field, the wider adoption of imaging for non-destructive testing and evaluation (NDT/NDE) within the High-Value Manufacturing (HVM) sector has allowed wider use of IBSim in recent years. IBSim is invaluable in scenarios where there exists a non-negligible variation between the ‘as designed’ and ‘as manufactured’ state of parts. It has also been used for characterisation of geometries too complex to accurately draw with CAD. IBSim simulations are unique to the geometry being imaged, therefore it is possible to perform part-specific virtual testing within batches of manufactured parts. This novel review presents the applications of IBSim within HVM, whereby HVM is the value provided by a manufactured part (or conversely the potential cost should the part fail) rather than the actual cost of manufacturing the part itself. Examples include fibre and aggregate composite materials, additive manufacturing, foams, and interface bonding such as welding. This review is divided into the following sections: Material Characterisation; Characterisation of Manufacturing Techniques; Impact of Deviations from Idealised Design Geometry on Product Design and Performance; Customisation and Personalisation of Products; IBSim in Biomimicry. Finally, conclusions are drawn, and observations made on future trends based on the current state of the literature.

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Section: Review Of Hvm Applications Of Ibsimmentioning

confidence: 99%

Section: Review Of Hvm Applications Of Ibsimmentioning

confidence: 99%

A Review of Image-Based Simulation Applications in High-Value Manufacturing

Evans

Sozumert

Keenan

et al. 2023

Arch Computat Methods Eng

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“…The microstructure of balsa determines its structural anisotropy and mechanical properties [5,35,57,[71][72][73][74][75][76][77][78][79]. Balsa wood has a high aspect ratio closed-cell microstructure, as shown in Figure 8.…”

Section: Microstructure Of Balsamentioning

confidence: 99%

Review of balsa core sandwich composite structures

et al. 2022

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“…A detailed description of this method can be found in Mura. 22 The method was successfully applied to predict stiffness of materials containing inclusions, for example wood, 23 concrete, 24 nanoclay-reinforced composites. [25][26][27] Motivated by the encouraging results in the literature, the Mori-Tanaka approach was also chosen for the current study.…”

Section: Step 3 Homogenization Of the Rvesmentioning

confidence: 99%

Modeling of elastic properties of cell-wall material in nanoclay-reinforced foams

Shishkina

Lomov

Verpoest

et al. 2015

Journal of Cellular Plastics

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A new micromechanical model that predicts anisotropic elastic properties of cell-wall material in nanoclay-reinforced polymeric foams is proposed. The model accounts for the reorientation of nanoclays during the foaming process, due to the stretching of the foam cell walls. Elastic moduli of bulk nanocomposites were studied first. It was found that given the high aspect ratio of nanoclays, they cannot be randomly placed in a representative volume element without having them intersect each other at high weight fractions. At 1.5 wt% the nanoclays already align and form clusters resulting in a significant effect on the stiffness of the nanocomposite. The number of silicate layers per cluster stack was also found to influence the Young’s modulus of the nanocomposite. When reinforcing polypropylene (PP) with 2 wt% of nanoclays, the modulus of elasticity decreased by 17% when the number of clays in a cluster went from 1 (fully exfoliated system) to 5. The stretching of the nanocomposite was shown to reorient nanoclays and, consequently, to change the stiffness of the cell wall. For the PP reinforced with 1 wt% of nanoclays and a stretching ratio of 6.5, the modulus increased by 15%.

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Structure–property relations for balsa wood as a function of density: modelling approach

Cited by 16 publications

References 38 publications

A Review of Image-Based Simulation Applications in High-Value Manufacturing

A Review of Image-Based Simulation Applications in High-Value Manufacturing

Review of balsa core sandwich composite structures

Modeling of elastic properties of cell-wall material in nanoclay-reinforced foams

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