Fracture Toughness Analysis of Aluminum (Al) Foil and Its Adhesion with Low-Density Polyethylene (LPDE) in the Packing Industry

Sharif, Umer; Sun, Baozhi; Islam, Md. Shafiqul; Majeed, Kashif; Ibrahim, Dauda Sh.; Adewale, Orelaja Oluseyi; Akhtar, Naseem; Zaki, Zaki Ismail; El‐Bahy, Zeinhom M.

doi:10.3390/coatings11091079

Cited by 2 publications

(1 citation statement)

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“…The results showed that the analytical methods for an asymptotically small crack extension could also be applied for a fairly large amount of crack growth. As adopting a proper set of material parameters for each layer in the laminate leads to realistic results, the fracture properties together with damage parameters of the laminate and the adhesion between two layers were defined based on experimental and theoretical methods by [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

The Role of Interfacial Adhesion on the Mechanical Behavior of Thin Metal/Polymer Laminate with Surface Roughness

Shahmardani

Mohammadi

2022

Polymers

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Metal/polymer laminate has versatile applications in industry due to the essential roles of its constituents in controlling its mechanical behavior. Therefore, efforts to enhance a laminate’s performance should target its mechanical behavior. One of the most influencing features of the mechanical behavior of this type of thin laminate is the interface layer properties. This study concentrates on the mechanical response of thin aluminum (Al) foil deposited on a polymer substrate by calibrating its interfacial layer properties based on available uniaxial tensile tests performed on thin Al/polymer laminate. Then, taking into account the calibrated parameters for the interface layer, which leads to mimicking the real conditions of the laminate, one type of imperfection is introduced as a wavy roughness on the surface of each layer with different amplitudes to investigate its influence on the overall mechanical behavior of the laminate and its failure mode. The results highlighted that the existence of the roughness on the surface of the polymer layer reduces the maximum engineering stress of the laminate more severely compared to other conditions. As the roughness amplitude increases, the maximum stress reduces a lot. The distribution of equivalent plastic strains represents the appearance of the shear bands in the Al layer and an almost uniform distribution for the polymer layer. In the case of existing roughness on each layer, a higher amount of plastic strain accumulation occurs in the middle of the polymer layer and top corners of the thin Al layer. Due to the significant effect of interfacial layer properties to improve the maximum strength of the laminate and its final elongation, a parametric study is performed, taking into account different interfacial properties. The results indicate that laminate behavior with weaker separation properties in the interface layer is mostly unaffected by adopting higher tractions, and no change happens in the case of high separation considering weak tractions.

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Section: Introductionmentioning

confidence: 99%