Yarns: Production, processability and properties

Alagirusamy, R.; Das, Arijit

doi:10.1533/9780857095583.1.29

Cited by 12 publications

(6 citation statements)

References 25 publications

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“…Meanwhile, the other two studies on PET plastic as a fine aggregate replacement reported a fineness modulus of 3.20 and 3.51, respectively. In addition, the melting point of PET plastic is reported to be higher than 250 °C by Sai Gopi et al [26], which corroborates with the general recognized melting point of PET in other literature [36,37] Furthermore, a study by Islam et al [24] that melted waste plastic to produce plastic flakes specified the usage of temperature between 280 °C and 320 °C in the melting process.…”

Section: Pet Plastic Aggregatesupporting

confidence: 77%

Meta-analysis on PET plastic as concrete aggregate using response surface methodology and regression analysis

Chong

2023

J Infrastruct Preserv Resil

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This paper aims to thoroughly analyze the effect of polyethylene terephthalate (PET) plastic aggregate on concrete compressive strength using a meta-analysis. Forty-three datasets for concrete containing PET coarse aggregate and 60 data sets for concrete containing PET fine aggregate were collected. The input variables used were percentage and nominal maximum size of PET aggregate along with the concrete mix proportions. Main effect plots, contour plots, and surface plots of the expressions were presented to demostrate the effect of PET aggregate on the 28-day compressive strength of concrete. The statistical parameters of the regression equations, such as R2, adjusted R2 and root-mean-square error (RMSE), indicated that the RSM approach is a powerful tool to describe the change of concrete compressive strength by PET aggregate addition. In addition, the study showed that using PET plastic as a fine aggregate replacement performed better than using it as a coarse aggregate replacement in concrete. At up to 30% replacement, concrete containing PET plastic as a fine aggregate can have satisfactory compressive strength.

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Section: Pet Plastic Aggregatesupporting

confidence: 77%

Meta-analysis on PET plastic as concrete aggregate using response surface methodology and regression analysis

Chong

2023

J Infrastruct Preserv Resil

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“…32 The fiber geometry plays an important role in the mechanical properties of the resultant composites. Alagirusamy and Das 50 explain that fibers can present crimp, twist, fibril, and mesh in their morphological characteristics, which allows a better mechanical anchoring, because matrix fills up those spaces, resulting in strong bonding.…”

Section: Resultsmentioning

confidence: 99%

Reinforced cementitious composite using viscose rayon fiber from textile industry waste

Santos

Oliveira

Rocha

et al. 2022

Journal of Engineered Fibers and Fabrics

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This study presents an analysis of the possible use of a viscose rayon (CV) fiber from textile industry wastes to develop a reinforced cementitious composite as an alternative for textile discharge valorization. Several techniques were used to characterize precursor fibrous waste material such as SEM, FT-IR, DSC, and TGA. The experimental studies were conducted based on a conventional cementitious mortar (control) and four different fiber contents (0.5, 1, 2, and 4 wt%). For mechanical behavior analysis, uniaxial compressive strength tests were carried out at different ages (7, 14, and 28 days after production). The results showed favorable CV fiber addition as reinforcement up to a maximum limit. The optimum concentration of fiber was 0.5 wt% (FRC0.5), which provided 28 days of higher compression strength. The addition of CV waste as reinforcement in cementitious matrix resulted in an improved compressive strength above 20.6% compared to the conventional non-reinforced mortar. Furthermore, CV fiber addition improved the ductile behavior of the new composite allowing a controlled failure, even after maximum rupture loading.

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“…Fabrics are flexible architectures that consist of a network of interlacing fibers [44]. The fiber, the element common to all fabrics, is a long and slender geometry that is bent, twisted, buckled, or elongated to create the various types of fabrics [45].…”

Section: Finite Beam Element Frameworkmentioning

confidence: 99%

A finite beam element multifunctional fabric modeling framework demonstrated with SMA knitted actuators

Eschen¹,

Weinberg²,

Abel³

2021

Smart Mater. Struct.

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Multifunctional textiles have gained recent attention due their intrinsic properties that provide actuator, energy dampening, or sensory capabilities within small form factor textiles without external attachments. Such technologies are specifically appealing for medical and aerospace wearables, where active compression, haptic feedback, or the tracking of bodily functions are important tasks that are ideally conducted in a minimally-intrusive fashion. Current design capabilities of multifunctional textile are limited as present predictive tools lack accuracy and universality. This paper presents a finite beam element modeling tool for shape memory alloy (SMA) knitted architectures. The temperature-dependent variation of material properties within the SMA knitted loop affects the macroscopic force-extension behavior of SMA knitted architectures leading to an actuated and a relaxed knitted architecture response. This difference is exploited as the active property in SMA knitted architectures. The modeling architecture defines interfaces between sub-models organized in modules, specifically the material constitutive module, repetitive unit cell module, manufacturing module, contact module, and a boundary condition module. The SMA knitted architecture is modeled utilizing a 1D SMA constitutive model, quarter loop knit unit cell, a differential geometry-based manufacturing model, while assuming 3D Coulomb friction conditions. Kinematically-suitable boundary conditions are applied and the simulation predictions are compared quantitatively to macroscopic tensile experimental results, as well as qualitatively to microscopic x-ray diffraction phase analysis. The verification against experimental data supports the ability of the modeling tool to accurately predict the SMA knitted architecture thermo-mechanical performance with mean force-extension errors of less than 5%. The modeling tool provides the basis to understand, design, and optimize the lightweight, large force and deformation SMA knitted actuator textiles for novel applications. Additionally, the multifunctional textile modeling tool is implemented based on highly interchangeable sub-models to create synergies and propel the modeling of any multifunctional textile.

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Yarns: Production, processability and properties

Cited by 12 publications

References 25 publications

Meta-analysis on PET plastic as concrete aggregate using response surface methodology and regression analysis

Meta-analysis on PET plastic as concrete aggregate using response surface methodology and regression analysis

Reinforced cementitious composite using viscose rayon fiber from textile industry waste

A finite beam element multifunctional fabric modeling framework demonstrated with SMA knitted actuators

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