An Experimental Study on Mechanical Behavior and Microstructures of Polyurethane Foams for Design Applications

Shivakumar, N. D.; Deba, Anindya; Chaudhary, Aziz

doi:10.1260/1757-2258.3.3.163

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…A relation between foam cellular structure and its mechanical behaviour has been discussed. 21 As clear from the discussion above, several studies have been undertaken to experimentally characterize the mechanical properties of polymeric foams of different densities under different loading conditions aimed at different applications. However, there appears to be no single comprehensive study on variation of key mechanical properties such as stiffness, strength and energy absorption 22,23 capability with respect to density.…”

Section: Introductionmentioning

confidence: 99%

Dependence of the mechanical properties of rigid PU foam on density

Shivakumar¹,

Deb²

2022

Journal of Reinforced Plastics and Composites

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Density is an important parameter that influences the properties and performances of rigid polyurethane foam. In this study, a systematic engineering approach is presented for determining the effect of density on mechanical properties of rigid/crushable PU foam for design applications. To this end, several mechanical performance parameters, that is, mean load and strength, secant modulus, energy absorption efficiency and densification strain are at first identified for the PU foam. Foam samples of different densities are obtained by varying the amount of liquid polyol–isocyanate of a desired mixing ratio in a constant-volume cubical mould and letting the blow and gelation reactions progress to completion. By conducting compression tests on cubic specimens of foam obtained, it is shown that various mechanical parameters of interest increase monotonically with respect to density. An SEM-based study on the effect of density on foam microstructure has also been carried out.

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Section: Introductionmentioning

confidence: 99%

Dependence of the mechanical properties of rigid PU foam on density

Shivakumar¹,

Deb²

2022

Journal of Reinforced Plastics and Composites

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“…In this study, the tetrakaidecahedral unit cell, shown in Figure 1e, is called KC1 and the other unit cell, Figure 1f, is named KC2. The correlation between the microstructure properties of foams with a tetrakaidecahedral unit cell shape and their mechanical properties has been studied by (Dawson and Shortall, 1982;Gong et al, 2005;Li et al, 2003;Mills, 2007;Shivakumar et al, 2011;Sullivan and Ghosn, 2009;Sullivan et al, 2008;Zhu et al, 1997). Previous studies can be mainly classified according to their assumptions on (1) deformation mechanisms (e.g.…”

Section: Introductionmentioning

confidence: 99%

Effect of microstructure closed-pore content on the mechanical properties of flexible polyurethane foam

Gholami

Doutres

Atalla

2017

International Journal of Solids and Structures

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Poroelastic models are constructed based on a set of physical parameters known as the Biot's parameters (for isotropic materials these are comprised of 5 non-acoustical parameters and 4 mechanical parameters). These macroscopic properties are inter-correlated and dependent on the microstructure of the foam. Therefore, to optimize vibroacoustic behavior, the correlation between foam microstructure and macroscopic properties is needed. In this study, the effect of closed windows content (known as reticulation rate), cell size, and relative density on the mechanical properties of polyurethane (PU) foam are numerically studied using an isotropic, tetrakaidecahedral unit cell.

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