scholarly journals On the application of Weibull analysis to experimentally determined single fibre strength distributions

2013 ◽  
Vol 77 ◽  
pp. 74-80 ◽  
Author(s):  
J.L. Thomason
Keyword(s):  
Single Fibre ◽  
Fibre Strength ◽  
Weibull Analysis ◽  
Strength Distributions

Single fibre strength of cellulosic fibre extracted from “Belatlan roots” plant

2017 ◽  
Author(s):  
M. Hanis. A. H. ◽  
M. S. Abdul Majid ◽  
M. J. M. Ridzuan ◽  
I. Fahmi
Keyword(s):  
Single Fibre ◽  
Fibre Strength ◽  
Cellulosic Fibre

scholarly journals Investigation of tensile strength and dimensional variation of T700 carbon fibres using an improved experimental setup

2019 ◽  
Vol 39 (3-4) ◽  
pp. 144-162 ◽  
Author(s):  
Faisal Islam ◽  
Sébastien Joannès ◽  
Steve Bucknell ◽  
Yann Leray ◽  
Anthony Bunsell ◽  
...  
Keyword(s):  
Large Data ◽  
Single Fibre ◽  
Experimental Methodology ◽  
Fibre Strength ◽  
Carbon Fibres ◽  
Data Set ◽  
Strength Data ◽  
Statistical Representation ◽  
Dimensional Variation ◽  
Single Fibres

Knowledge of fibre strength is crucial for understanding the failure behaviour of fibre-reinforced composite materials and structures. Measuring the properties of technical fibres has been known to be very challenging, and the different challenges associated with single fibre characterisation are illustrated in this article. An improved and automated experimental methodology for tensile testing of single fibres is described. This process has been used to generate fibre strength data for T700 carbon fibres at three different gauge lengths of 4, 20 and 30 mm. The variability in strength and modulus of short fibres was found to be much larger than that of longer fibres. Statistical analysis of this large data set has also highlighted the limitations of the standard Weibull distribution for representing fibre strength behaviour. The need for a better statistical representation of the fibre strength data in order to provide a more accurate description of the fibre strength behaviour has been emphasized.

Determination of single fibre strength distribution from fibre bundle testings

1984 ◽  
Vol 19 (10) ◽  
pp. 3319-3324 ◽  
Author(s):  
Zhifan Chi ◽  
Tsu -Wei Chou ◽  
Guoyi Shen
Keyword(s):  
Fibre Bundle ◽  
Single Fibre ◽  
Strength Distribution ◽  
Fibre Strength

scholarly journals Extraction and characterization of natural fibres form Elettaria Cardamomum

2021 ◽  
Vol 69 (2) ◽  
pp. 30-33
Author(s):  
Murugesan Sumithra ◽  
Gayathri Murugan
Keyword(s):  
Chemical Composition ◽  
Good Alternative ◽  
Single Fibre ◽  
Natural Fibres ◽  
Fibre Strength ◽  
Cellulose Fibres ◽  
Elettaria Cardamomum ◽  
Natural Cellulose ◽  
Alternative Sources

Natural fibres are one of the good alternative sources for replacing synthetic fibres and reinforcing polymer matrices because of their eco-friendly nature. The present study was undertaken to investigate the fibres extract from Elettaria Cardamomum plant. The extracted Elettaria Cardamomum fibre was treated with NaOH for softening. Natural cellulose fibres extracted from Elettaria Cardamomum stems (ECS) have been characterized for their chemical composition and physical properties.The chemical composition of Elettaria Cardamomumstems (ECS) fi bres is, cellulose 60.44%, lignin 25.25%, wax 0.53%, ash 5.45%. Regarding physical properties of the fibres, single fibre strength was evaluated and the result was compared with cotton fibre and linen fibre.

scholarly journals Mathematical Modelling of the Interfacial Adhesion of Date Palm/Epoxy

2016 ◽  
Vol 5 (3) ◽  
pp. 29
Author(s):  
A. Shalwan ◽  
S. Oraby ◽  
A. Alaskari
Keyword(s):  
Chemical Treatment ◽  
Interfacial Adhesion ◽  
Date Palm ◽  
Mechanical Performance ◽  
Experimental Testing ◽  
Fibre Diameter ◽  
Single Fibre ◽  
Natural Fibres ◽  
Fibre Strength ◽  
Testing Procedures

<p class="1Body">In recent years, high interests has emerged to use natural fibres as alternative reinforcements synthetic due to its unique benefits regarding renewability, recyclability, degradability, lightweight, and low cost. Recent investigations revealed that the mechanical performance of fibre reinforced polymer composites (FRPCs) is predicated mainly on the interfacial adhesion of fibre with the matrices. In the current work, an empirical approach was exploited to develop mathematical models using linear regression routines available in SPSS IBM program. Such models are established to determine the functional interrelations between, each of the fibres diameters and the percentage of chemical treatment, as independent or response variables, and the interfacial bonding between the DPF and Epoxy resin. Both single fibre tensile testing (SFTT) and single fibre fragmentation testing (SFFT) are considered to study the interfacial adhesion of fibre with matrix and to reflect the real loading conditions. Such testing procedures are carried out for Date Palm Fibres (DPFs) and Date palm fibre reinforced Epoxy composites (DPFEs) with different fibre diameter (0.3-0.7 mm) under different NaOH concentrations (0-9 wt.%). Experimental testing results indicated that the optimum interfacial adhesion and strength of the fibre can be achieved with small fibre diameter when 6 wt. % NaOH concentrations is employed. The use of higher NaOH concentration generally leads to deterioration in the fibre strength. Developed models, on one hand, proved to have the capability to qualitatively and quantitatively grasp the true relationships and, on the other hand, to emphasize the high potential to utilize natural fibres as a replacement of synthetic fibres with affirmation taking into consideration the role of diameter size and chemical treatment of fibres to reach the optimum mechanical behaviour of NFRPCs.</p>

scholarly journals Evaluation of Critical Parameters in Tensile Strength Measurement of Single Fibres

2019 ◽  
Vol 3 (3) ◽  
pp. 69 ◽  
Author(s):  
Faisal Islam ◽  
Sébastien Joannès ◽  
Lucien Laiarinandrasana
Keyword(s):  
Sensitivity Analysis ◽  
Tensile Strength ◽  
Composite Materials ◽  
Measurement Errors ◽  
Single Fibre ◽  
Critical Parameters ◽  
Fibre Strength ◽  
Relative Significance ◽  
Fibre Properties ◽  
Small Gauge

Mechanical properties of fibre reinforced composites are primarily dependent on those of fibres. Fibre properties are used for estimating the damage and strength behaviour of composite materials and structures. Tensile strength of fibres is commonly determined by single fibre tensile tests, which is challenging and is prone to measurement errors. In this study, different possible sources of errors due to experimental limitations in the fibre testing process were identified. Their effect on fibre tensile strength was analytically modelled. This model was used to evaluate the uncertainty in experimentally determined fibre strength. A sensitivity analysis was conducted to rank the relative significance of input quantities on the calculated fibre strength. Since composite models require fibre properties determined at very small gauge lengths, the results of the sensitivity analysis were extrapolated to determine critical parameters for tests done at those small gauge lengths of a few millimetres. It was shown that, for sufficiently long fibres, their strength depends mainly on the diameter and failure force; however, for shorter gauge lengths, the effects of misalignment become very significant. The knowledge of uncertainty would be useful in estimating the reliability of the predictions made by composite strength models on the damage and failure behaviour of composite materials and structures. Minimising the influence of critical parameters on fibre strength would help in designing improved single fibre testing systems capable of determining fibre strength more accurately.

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