publication . Article . 2012

Impact of material processing and deformation on cell morphology and mechanical behavior of polyurethane and nickel foams

Franck N'Guyen; Samuel Forest;
Open Access English
  • Published: 01 Oct 2012
  • Publisher: HAL CCSD
  • Country: France
Abstract
International audience; The cell morphology and mechanical behavior of open-cell polyurethane and nickel foams are investigated by means of combined 3D X-ray micro-tomography and large scale finite element simulations. Our quantitative 3D image analysis and finite element simulations demonstrate that the strongly anisotropic tensile behavior of nickel foams is due to the cell anisotropy induced by the deformation of PU precursor during the electroplating and heat treatment stages of nickel foam processing. In situ tensile tests on PU foams reveal that the initial main elongation axis of the cells evolves from the foam sheet normal direction to the rolling direct...
Subjects
free text keywords: Plasticity, Finite element, Micro-tomography, Material processing, Metal foam, Nickel foam, PU foam, Polyurethane foam, Cell morphology, Cell deformation, Architectured material, Diesel particulate filtering, Hyperelasticity, [SPI.MAT]Engineering Sciences [physics]/Materials, Materials Science(all), Mechanical Engineering, Modelling and Simulation, General Materials Science, Mechanics of Materials, Applied Mathematics, Condensed Matter Physics
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