Structural Performance of Polyurethane Foam-Filled Building Composite Panels: A State-Of-The-Art

Samali, Bijan; Nemati, Saeed; Sharafi, Pezhman; Tahmoorian, Farzaneh; Sanati, Farshad

doi:10.3390/jcs3020040

Cited by 11 publications

(3 citation statements)

References 72 publications

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“…Figure 10 describes the main failure modes of sandwich structures subjected to three-point bending tests. The results of the bending tests showed that a failure of tension in the upper skin occurs in this type of sandwich specimen with honeycomb core as compression face wrinkling [ 29 ].…”

Section: Resultsmentioning

confidence: 99%

Mechanical Performances of Lightweight Sandwich Structures Produced by Material Extrusion-Based Additive Manufacturing

2020

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Material Extrusion-Based Additive Manufacturing Process (ME-AMP) via Fused Filament Fabrication (FFF) offers a higher geometric flexibility than conventional technologies to fabricate thermoplastic lightweight sandwich structures. This study used polylactic acid/polyhydroxyalkanoate (PLA/PHA) biodegradable material and a 3D printer to manufacture lightweight sandwich structures with honeycomb, diamond-celled and corrugated core shapes as a single part. In this paper, compression, three-point bending and tensile tests were performed to evaluate the performance of lightweight sandwich structures with different core topologies. In addition, the main failure modes of the sandwich structures subjected to mechanical tests were evaluated. The main failure modes that were observed from mechanical tests of the sandwich structure were the following: face yielding, face wrinkling, core/skin debonding. Elasto-plastic finite element analysis allowed predicting the global behavior of the structure and stressing distribution in the elements of lightweight sandwich structures. The comparison between the results of bending experiments and finite element analyses indicated acceptable similarity in terms of failure behavior and force reactions. Finally, the three honeycomb, diamond-celled and corrugated core typologies were used in the leading edge of the wing and were impact tested and the results created favorable premises for using such structures on aircraft models and helicopter blade structures.

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Section: Resultsmentioning

confidence: 99%

Mechanical Performances of Lightweight Sandwich Structures Produced by Material Extrusion-Based Additive Manufacturing

2020

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“…In recent years, rigid polyurethane foam has been widely employed as an insulation material in structures, as well as in building panels and components, due to its exceptional strength and insulating capabilities [ 1 , 2 , 3 ]. Whether it is used for insulation or building construction, in addition to the functional features of rigid polyurethane foam, its strength must match the criteria of real usage in order to avoid damage and a loss of functionality.…”

Section: Introductionmentioning

confidence: 99%

Study on the Cross-Scale Effects of Microscopic Interactions and Mechanical Properties of Rigid Polyurethane Foam Driven by Negative-Temperature Environments

Wei,

Bi,

2024

Polymers

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In order to investigate the cross-scale effects of the interaction between the hard and soft segments of stiff polyurethane foam on the material’s mesoscopic pore structure and macroscopic compression characteristics in various negative-temperature environments, this paper used molecular dynamics to calculate the interaction differences between hard and soft segments in different negative-temperature environments. The effects of various negative-temperature settings on the cell structure of stiff polyurethane foam were investigated using scanning electron microscopy and Image J software. Finally, macro experiments were used to determine the influence of a negative-temperature environment on the characteristics of stiff polyurethane foam (such as compressibility). The molecular simulation calculation results show that in a negative-temperature environment, decreasing temperature gradually increases the interaction between hard segment molecules and soft segment molecules, resulting in an increase in the molecules’ modulus and cohesive energy density. The scanning electron microscope results reveal that a negative-temperature environment gradually increases the pore diameter of stiff polyurethane foam. The compression experiment findings demonstrate that, for the same service duration, the compressive strength in the −20 °C environment is 27.53% higher than that in the 0 °C environment. The study’s findings reveal a microscopic mechanism for the following receiving alterations and toughness enhancement of rigid polyurethane foam throughout service in negative-temperature conditions.

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“…Polyurethane foam composites have also been studied using new materials to improve their properties. Polyurethane foam reinforced with natural fibers provides structural integrity, lightness, and higher energy absorption [26], as well as an environmentally friendly alternative [27].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Novel Reinforced Composite Panels Made of Cold-Rolled Galvanized Sheets Filled with Foamed Concrete and Fire-Resistance Polyurethane Foam

Aala

Gholipour

Samadi

2022

Advances in Materials Science and Engineering

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While introducing the novel structural method, this paper compares the behavior of composite panels comprised of cold-rolled galvanized sheets infilled with the foamed concrete and the fire-resistance polyurethane foam. A series of axial and bending tests are carried out on the composite panels with mentioned fillers; also, the function of the wire mesh and surrounding cold-rolled galvanized sheets with different thicknesses and different fillers are investigated in an attempt to know the effects of mentioned sheets on the final strength. The results show that applying the fire-resistance polyurethane foam performs better in enhancing the bending and the axial strength of composite panels in comparison with the foamed concrete filler. By this combined system with foamed concrete as infilling material, the cold-rolled galvanized sheets, which endure low bending and axial tension, have been able to withstand bending and axial load around 1.92–4.08 N/mm2 and 0.98–1.074 N/mm2, respectively. In addition to the aforementioned composite system, those panels with fire-resistance polyurethane foam as infilling material, apart from the greater lightness, around 40% lighter, have been able to withstand more with approximately 50% and 10% higher bending and axial load, respectively.

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Structural Performance of Polyurethane Foam-Filled Building Composite Panels: A State-Of-The-Art

Cited by 11 publications

References 72 publications

Mechanical Performances of Lightweight Sandwich Structures Produced by Material Extrusion-Based Additive Manufacturing

Mechanical Performances of Lightweight Sandwich Structures Produced by Material Extrusion-Based Additive Manufacturing

Study on the Cross-Scale Effects of Microscopic Interactions and Mechanical Properties of Rigid Polyurethane Foam Driven by Negative-Temperature Environments

Experimental Investigation of Novel Reinforced Composite Panels Made of Cold-Rolled Galvanized Sheets Filled with Foamed Concrete and Fire-Resistance Polyurethane Foam

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