New experimental investigation of non-conventional dynamic biaxial plastic buckling of square aluminum tubular structures

Baleh, R.; Abdul–Latif, A.; Menouer, A.; Razafindramary, D.

doi:10.1016/j.ijimpeng.2018.09.002

Cited by 7 publications

(1 citation statement)

References 58 publications

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“…In this test, one end of the bar was kept together using artificial clay. Additionally, a dynamic force transducer was used to determine the axial force acting on the bar specimens, an accelerometer was used to determine acceleration, and a laser displacement transducer was utilized to determine the resultant deflection [20,21]. The drop hammer test revealed that most GFRP bars failed due to fiber splitting, with several specimens completely smashed.…”

Section: Introductionmentioning

confidence: 99%

The Dynamic and Flexural Behavior of Coated GFRP Rebars after Exposure to Elevated Temperatures

2022

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The dynamic and flexural behavior of pultruded glass fiber reinforced polymer GFRP rebars were investigated after exposure to elevated temperatures ranging from room temperature to 290 °C. The rebars were cut and grouped into two sets. The first set contained the uncoated specimens, and the second set enclosed the specimens that had been coated with a gun-sprayed thin layer of silicon matrix mixed with ceramic nanoparticles as an insulation medium. All specimens’ dynamic and flexural performances were experimentally performed after heating them inside the oven for 6 h and later cooled down outside the oven at room temperature for 24 h. The dynamic results of the coated specimens showed slight changes in the damping ratio due to the effectiveness of the coating layer. In contrast, the uncoated specimens showed a gradual increase in the damping ratio ranging from 12.5% to 43.1%. Similarly, the tested flexural strength of the coated specimens provided slight changes within the elevated temperatures, while the uncoated specimens showed a gradual decrease ranging from 3.9% to 6.4%.

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Section: Introductionmentioning

confidence: 99%

The Dynamic and Flexural Behavior of Coated GFRP Rebars after Exposure to Elevated Temperatures

2022

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Investment casting of porous Mg-alloy networks biomechanically tuned for bone implant applications

Dmitruk,

Díaz Lantada,

Ferraris

et al. 2024

Int J Adv Manuf Technol

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Manufacturing technology has been refined and described for the fabrication of honeycomb-based bioresorbable networks for temporal bone replacement applications. Two novel techniques, digital light processing and investment casting, were utilized to produce customized, shape-optimized cellular constructs with additional orifices promoting tissue ingrowth during osteo-regeneration. For this purpose, a conventional magnesium casting alloy (AZ91) was chosen. Numerical simulations were conducted to predict the compressive behavior of the proposed biodegradable lightweight scaffolds. Spatial castings were adjusted to possess mechanical properties comparable to the ones of cortical or trabecular bones. Two kinds of protective coatings (plasma electrolytic oxidation and organic ones based on natural polyphenols from tea extract) were deposited and characterized. They can be utilized to control the degradation rate during exploitation to achieve a predictable implant lifespan. The elaborated layers aim to mitigate the rapid corrosion of magnesium substrates by prolonging their bioresorption time and thus expanding their applicability in osseointegration. To evaluate this assumption, immersion tests in phosphate-buffered saline were performed, showing better chemical resistance of PEO coating and as-cast sample (for both mass gain by below 1%), and visible increase in mass of sample coated with organic coating (increase by almost 5%). Compressive strength results from numerical approach were further validated by experimental compression tests, showing that PEO coating deteriorated compressive strength by almost 3%, and organic coating improved it by over 9%. Results achieved in numerical approach were better than expected for stiffer sample, and slightly lower for the one with bigger pores.

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A three-dimensional compression-torsion metamaterial based on the three-period minimum surface theory

Zhang,

Li,

Zhu

et al. 2023

Composite Structures

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New experimental investigation of non-conventional dynamic biaxial plastic buckling of square aluminum tubular structures

Cited by 7 publications

References 58 publications

The Dynamic and Flexural Behavior of Coated GFRP Rebars after Exposure to Elevated Temperatures

The Dynamic and Flexural Behavior of Coated GFRP Rebars after Exposure to Elevated Temperatures

Investment casting of porous Mg-alloy networks biomechanically tuned for bone implant applications

A three-dimensional compression-torsion metamaterial based on the three-period minimum surface theory

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