Fique Fiber Tensile Elastic Modulus Dependence with Diameter Using the Weibull Statistical Analysis

Teles, Maria Carolina Andrade; Altoé, Giulio Rodrigues; Netto, Pedro Amoy; Colorado, Henry A.; Margem, Frederico Muylaert; Monteiro, Sérgio Neves

doi:10.1590/1516-1439.364514

Cited by 33 publications

(10 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are many natural fibers types reinforcing composites, almost any country has its own natural fibers. Many of them have shown promising applications in engineering, such as fique, 8 curaua, 9 Cyperus malaccensis Sedge, 10 pineapple 11 and banana fibers. 12 However, none of these fibers shows a 3 D architecture as luffa fiber, 13 which is the object of this research.…”

Section: Introductionmentioning

confidence: 99%

Luffa fibers as promising reinforcement for polymer composites: Mechanical characterization of NaOH treated and untreated dumbbell test-pieces with Weibull statistics

Carmona

Colorado

2020

Journal of Composite Materials

View full text Add to dashboard Cite

Different materials require specific test-piece dimensions and designations for their mechanical characterization, present either in ASTM, ISO, or DIN norms. Natural polymers or bio-fibers are materials that have lignocellulosic fibrils that can be mechanically characterized as single fibers, which tend to be bundles of thinner hollow fibrils. In this work, a new approach has been applied to the unique natural fiber Luffa cylindrica, also called loofah or scourer, as loofah dumbbell test-pieces (LDTs) similar in length to the Type IV ASTM D-638 samples for unreinforced or reinforced plastics. 60 LDTs of 120 mm and 40 mm in length and width respectively were cut by hand, with and without alkali treatment (aqueous 2%NaOH), in transversal and longitudinal directions, to be characterized using testing speeds of 1 mm/min and 50 mm/min, SEM, XRD, statistics, and Weibull analysis. The resultant force vs. elongation/stress vs. strain graphs revealed a high variability of LDTs, and mercerization was found to increase their mechanical resistance. SEM images confirmed a microtubular cellular structure, XRD exposed an increment in crystallinity after alkali treatment, and Weibull indicated the probability of failure in 10 samples per configuration.

show abstract

Section: Introductionmentioning

confidence: 99%

Luffa fibers as promising reinforcement for polymer composites: Mechanical characterization of NaOH treated and untreated dumbbell test-pieces with Weibull statistics

Carmona

Colorado

2020

Journal of Composite Materials

View full text Add to dashboard Cite

show abstract

“…Figure 2a shows that fibers are typically 100 to 300μm in diameter and very porous, which is common to many natural fibers (Neves Monteiro, Salgado de Assis, Ferreira, Tonini Simonassi, Pondé Weber, Souza Oliveira, Colorado & Camposo Pereira, 2018). This means they can be used in a positive way for applications such as those needing water retention (Raghavendra, Swamy, Rastogi, Raghavarao, Kumar & Tharanathan, 2006) and low density composites (Teles, Altoé, Amoy, Netto, Colorado, Margem & Monteiro, 2015). Figure 2b, reveals details of the porous structure, with some semi-hexagonal tubes of about 10μm diameter.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of asphalt binder blended with coconut coir dust and residual coconut fibers for structural applications

Loaiza¹,

Aristizábal²,

Colorado³

2019

rdlc

View full text Add to dashboard Cite

This is an investigation into asphalt binder mixed with different amounts of an organic waste containing coconut coir dust and residual short coconut fibers abundant in the Caribbean and tropical countries. The concentrations used were 0.0, 1.0, 2.5 and 5.0wt%. Coconut coir is a type of organic waste produced in large quantities in Caribbean region of Colombia. It is composed of grinded mesocarp, which is the fibrous husk of the coconut fruit, and is currently used in agriculture, ornaments and crafts. This waste is a very stable and strong material suitable for use in structural applications such as the reinforcement of composite materials. In this investigation, materials characterization was conducted using Fourier transform infrared spectroscopy and scanning electron microscopy to analyze the microstructure of samples. Particle size distribution tests were also included to analyze the short coconut fibers. Penetration, softening point, penetration index, viscosity, flash point, fire point and ductility performance tests were also carried out on the asphalt mixes. Overall, these tests revealed that asphalt formulations can be used in selected construction and building material applications.

show abstract

“…They withstand a temperature of about 220⁰C. The tensile strength is around 237MPa and the diameter of fique fibers vary from 0.06 to 0.26mm [12]. Henequen fibers are used for making ropes and twines.…”

Section: Leafmentioning

confidence: 99%

Application of Natural Fibers in Environmental Friendly Products

Solomon

2020

IJESNR

View full text Add to dashboard Cite

Environmental friendly raw materials and products are the need of the hour for manufacturing products which will not pollute the environment during production, during its life time and also after the product serves its useful life. Products dumped in the landfill after retirement should not pollute the environment but should be capable of going through the degradation process without affecting the ecological system. The application of natural fibers is an emerging area in material science which provides solution to this problem. This paper presents various types of fibers from natural resources and their applications in automotive parts, furniture, buildings and construction sectors. Semi-structural parts made of bio-composites are used in automobiles, aero planes, military applications, railway coaches and boats. The paper emphasizes that awareness must be created among product designers to recognize the advantages of bio-composites for extending these composites for designing many more products.

show abstract

Fique Fiber Tensile Elastic Modulus Dependence with Diameter Using the Weibull Statistical Analysis

Cited by 33 publications

References 41 publications

Luffa fibers as promising reinforcement for polymer composites: Mechanical characterization of NaOH treated and untreated dumbbell test-pieces with Weibull statistics

Luffa fibers as promising reinforcement for polymer composites: Mechanical characterization of NaOH treated and untreated dumbbell test-pieces with Weibull statistics

Evaluation of asphalt binder blended with coconut coir dust and residual coconut fibers for structural applications

Application of Natural Fibers in Environmental Friendly Products

Contact Info

Product

Resources

About