Study on mechanical properties of polyurethane-enhanced triply periodic minimal composite structures inspired by rachis microstructure

Liu, Ruiyao; Yao, Guofeng; Sha, Luming; Yu, Zhenglei; Liang, Peng; Han, Chunyang; Zhu, Kuichun; Dong, Li Min; Xu, Zezhou; Zhang, Jundong; Guo, Yunting

doi:10.1016/j.compscitech.2023.110197

Cited by 5 publications

(1 citation statement)

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“…They attributed this phenomenon to the microstructural changes in the foam cells, such as cell wall buckling and hinge rotation. Liu et al [64] studied the mechanical properties of polyurethane-enhanced triply periodic minimal composite structures inspired by rachis microstructure and found that the Poisson's ratio of the composite structures was negative and tunable by changing the rachis angle and thickness. They explained that the negative Poisson's ratio was due to the deformation mechanism of bending-dominated auxetic behavior.…”

Section: Poisson Ratio Determination (V)mentioning

confidence: 99%

Influence of Microstructure on the Dynamic Behaviour of Polyurethane Foam with Various Densities

Boumdouha,

Louar

2023

J. Basic Appl. Sci.

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Polyurethane foam is reinforced with varying proportions of metal loads and other components to increase shock absorption and mechanical impact. The main objective is to develop high-performance polymeric materials based on polyurethane foam developed with different compositions and specific densities. We monitor the growth distances and temperatures of the polyurethane foam in time to reach the optimum formulations. We conduct static compression tests and investigate the effect of drop weight on the deformation of polyurethane foam structures by dropping a weight from a specified height. Dynamic collisions cause deformations of the polyurethane foam structure. After investigating the low weight, we found that polyurethane foams have a good absorption coefficient at certain frequencies. Dynamic stress-strain response curves are used to characterize different stress rates. High-stress levels and similar strains indicate a high resistance to shock. We follow the evolution of microstructure structures by scanning electron microscopy (SEM) to observe deformation and fracture behavior with reversibility and recovery.

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Section: Poisson Ratio Determination (V)mentioning

confidence: 99%