Theoretical model: analysing theoretically the air flow through car seat foam material

BUYUK, MAZARI FUNDA; Adnan, M. A. K.; Havelka, Antonín; Adámek, Karel

doi:10.35530/it.070.04.1559b

Cited by 4 publications

(6 citation statements)

References 2 publications

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“…-Breaking resistances: all variants show relative similar values but with slightly higher values with the double-ripstop variants F2 and F4. Increased tear strength is observed on the F3 variant, probably to the tearing mode which blocks the rupture propagation (Buyuk et al, 2019). This tearing behavior also exhibits on the F1 variant.…”

Section: Methods and Resultsmentioning

confidence: 71%

Proceedings of the 9th International Conference on Advanced Materials and Systems

2022

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Section: Methods and Resultsmentioning

confidence: 71%

Proceedings of the 9th International Conference on Advanced Materials and Systems

2022

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“…One of the most important properties for these fabrics is the air permeability (Buyuk et al, 2019) and we tried to reduce this by catering several aspects:…”

Section: Resultsmentioning

confidence: 99%

Theoretical and practical aspects of the design phase for a single skin textile wing

Săliștean¹,

Mihai²,

Toma³

et al. 2020

Proceedings of the 8th International Conference on Advanced Materials and Systems

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This paper depicts the early phase in the research development for an integrated support system tailored for emergency response actions and remote sensing. The support system is envisioned as an integrated Unmanned Aerial System (UAS) system that consists of one or more ultralight multifunctional aerial units with a configuration that can be adapted to the nature of the intervention: monitoring, mapping, observation and logistics etc. These aerial units comprise of para-motor type UAVs that use textile paraglider wings of a special design. The paper summarizes the basic materials used in the construction of parachutes, as well as it depicts the design phase for the main material used on the wing construction. Starting from wing airfoil and materials selection, a design phase is ongoing for a single sail paraglider wing that can meet the operational demands for emergency response situations. The wing is designed mainly to have an easy handling and to have a predictable deployment at all times. The entire system and the aerial units are designed with increased modularity in order to be tailored for specific operational requirements of the intervention. A numerical model is under development and rigorous testing to validate the theoretical aspects and the design choices.

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“…The air permeability describes the flow rate of a fluid from a porous structure. The mathematical expression describing is given below 62 : where q is the velocity of flow (m/s), Q is the flow volume of fluid through the specimen (m 3 ), A is the cross-sectional area of the specimen (m 2 ) and t is time (s). This test method provides the most accurate results in air permeability testing on PU foams.…”

Section: Methodsmentioning

confidence: 99%

“…Density: 50 kg/m 3 , viscosity: 200 cps, and mixing ratio: 1/1 (A:B) by volume. [60][61][62] In this manner, geometric improvement was aimed for as a result of structural damage. Filled two types of macrocapsules with Part A and Part B agents were placed homogeneously in the Al sandwich structures at a ratio of 1:1 by weight.…”

Section: Methodsmentioning

confidence: 99%

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A sandwich panel that autonomously repairs sudden large holes and defects for tankers and pipelines carrying hazardous matter

Özer

Kuzu

Özada

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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The self-healing of micro and macro cracks is vital for eliminating defects such as damage progression and loss of strength in structures. In this study, a polyurethane (PU) based geometrically self-healing sandwich structure was developed. The geometric healing agent, PU resin and activator, were filled into macrocapsules, and these capsules were filled into the Aluminum (Al) honeycomb cells. Self-healing of structural strength, large holes and cracks in developed sandwich structures were investigated by performing quasi-static compression and impact penetration tests. The sandwich structure with a self-healing capsules-filled core was damaged by subjecting it to quasi-static and penetration impact loads, and the healing agents in the broken capsules were mixed. The damage in the specimen was removed by geometric self-healing. Liquid and air permeability tests were applied to the PU foam used as a healing agent. No liquid permeability was observed in the structure. In addition, significant reductions in air permeability were obtained. Scanning electron microscope images were used to explore the characterization of the PU foam structure cells.

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Theoretical model: analysing theoretically the air flow through car seat foam material

Cited by 4 publications

References 2 publications

Proceedings of the 9th International Conference on Advanced Materials and Systems

Proceedings of the 9th International Conference on Advanced Materials and Systems

Theoretical and practical aspects of the design phase for a single skin textile wing

A sandwich panel that autonomously repairs sudden large holes and defects for tankers and pipelines carrying hazardous matter

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