Trouser tear testing of thin anisotropic polymer films and laminates

Islam, Md. Shafiqul; Kao-Walter, Sharon; Andreasson, Eskil

doi:10.1007/s10704-019-00389-3

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…68 In this study, the legs were not stretched along the uniaxial test; therefore, Equation (8) was used to evaluate the critical fracture energy in the present paper. The F_New material showed the same behavior as the lowextensible polymer film of PP studied by Islam et al, 69 which indicates that fracture is exclusively governed by mode III material behavior without a pronounced yield zone; hence, all strain energy is consumed and dissipated into local plastic flow during the crack tip growth.…”

Section: Critical Fracture Energy From Trouser Tear Testsupporting

confidence: 61%

Fracture behavior and mechanical, thermal, and rheological properties of biodegradable films extruded by flat die and calender

Gigante

Aliotta

Coltelli

et al. 2020

Journal of Polymer Science

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The development of biodegradable materials for tailored applications, particularly in the field of polymeric films and sheets, is a challenging technological goal as well as a contribution to help protect the environment. Poly(lactic) acid (PLA) is a promising substitute for several oil-based polymers; however, to overcome its thermal and mechanical drawbacks, researchers have developed solutions such as blending PLA with polybutylene adipate terephthalate (PBAT), which is capable of increasing the ductility of the final material. In this study, PLA/PBAT binary blends, with minimum possible content of nonrenewable materials, were examined from processing, thermal, morphological, and rheological perspective. An optimized PLA/PBAT ratio was chosen as the polymeric basis to obtain a biodegradable formulation by adding a biobased plasticizer and appropriate fillers to produce a micrometer film with tailored flexibility and tear resistance. The processing technology involved flat-die extrusion, followed by calendering. The tearing resistance of the produced film was investigated, and the results were compared with literature data. A study on the essential work of fracture was implemented to explore the mode III out-of-plane fracture resistance starting from a trouser tear test.

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Section: Critical Fracture Energy From Trouser Tear Testsupporting

confidence: 61%

Fracture behavior and mechanical, thermal, and rheological properties of biodegradable films extruded by flat die and calender

Gigante

Aliotta

Coltelli

et al. 2020

Journal of Polymer Science

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show abstract

“…Any sudden change in the role of laminate layers may cause catastrophic effects on people’s health. In this regard, versatile studies have been performed on this type of thin laminate to improve its effectiveness in the mentioned application [ 9 , 10 , 11 ]. A new experimental technique was also developed to distinguish the defects in the fabricated laminate that are not detectable by the observer’s view and may lead to catastrophe failure [ 12 ].…”

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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Tearing fracture of poly(lactic acid) (PLA)/ poly(butylene succinate-co-adipate) (PBSA) cast extruded films: Effect of the PBSA content

Aliotta,

Gigante,

Dal Pont

et al. 2023

Engineering Fracture Mechanics

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Trouser tear testing of thin anisotropic polymer films and laminates

Cited by 5 publications

References 15 publications

Fracture behavior and mechanical, thermal, and rheological properties of biodegradable films extruded by flat die and calender

Fracture behavior and mechanical, thermal, and rheological properties of biodegradable films extruded by flat die and calender

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

Tearing fracture of poly(lactic acid) (PLA)/ poly(butylene succinate-co-adipate) (PBSA) cast extruded films: Effect of the PBSA content

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