Tensile Studies on Random Oriented Human Hair Fiber Reinforced Polyester Composites

Rao, P. Divakara; Kiran, C. Udaya; Prasad, K.

doi:10.3329/jme.v47i1.35357

Cited by 15 publications

(9 citation statements)

References 9 publications

(11 reference statements)

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“…4,25 As with the tensile properties of the composite, the weight fraction of the composite must be optimized to get the maximum wettability (and consequently adhesion) at the interface between the matrix and the fibers, since hair is naturally hydrophobic then it must be kept within the optimum weight fraction of the addition. This agrees with the results achieved by Sathishkumar et al 26 and Rao et al 22 who figured out that the addition of reinforcement should not exceed a critical value, beyond which the the mechanical strength begins to drop gradually.…”

Section: Resultssupporting

confidence: 92%

“…This is particularly clear when the fibers are long enough, as other researchers have stated that any length of fibers between 5 and 50 mm could be used as a reinforcement to polymer matrix composites. 22,23 This range of fiber lengths is suitable to sustain plastic deformation before fracture of the matrix, and this conforms with the results obtained with other researchers, 24 such that the optimum hair length was found to be 40–45 mm in a polyethylene matrix, and this could be justified with the decrease of the number of fiber ends that could act as stress concentration points at which fracture may initiate. 24 The weight fraction of the reinforcement is also important in determining the final behavior of material when put under tensile loading.…”

Section: Resultssupporting

confidence: 88%

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Study of the insulation and mechanical properties of hair-reinforced epoxy

Salih

Al-Zubaydi

2021

Progress in Rubber, Plastics and Recycling Technology

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This research reports the study of epoxy reinforced with human hair as a potential building material for the purpose of acoustic and thermal insulation for building industry. The sound insulation and thermal conductivity were studied for an epoxy composite reinforced with 15% human hair, together with a set of mechanical properties (tensile strength and flexural strength). The sound insulation results proved that the addition of hair led to about 75% loss of the sound intensity compared to the sound intensity noticed for the unreinforced specimen. Thermal conductivity decreased by about 20% with reinforcement. Mechanical properties show a significant improvement, such that flexural strength increased by 25%. The tensile test results showed a higher Young’s modulus and tensile strength for the reinforced specimen by about 50% and 27% respectively. Finally, flexural strength also showed an increase by about 20% after reinforcement.

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Section: Resultssupporting

confidence: 92%

Section: Resultssupporting

confidence: 88%

Study of the insulation and mechanical properties of hair-reinforced epoxy

Salih

Al-Zubaydi

2021

Progress in Rubber, Plastics and Recycling Technology

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“…This is due to improper fiber impregnation when the fiber is more than 10%. And the addition of high fiber for tensile strength results in poor fiber efficiency causing a decrease in tensile strength [10].…”

Section: Fig 12 Average Tensile Strength Diagrammentioning

confidence: 99%

“…Most hair fibers are made of keratin, Keratin is a laminated complex formed by different structures, which gives the hair strength, flexibility, durability, and functionality and its degradation time is slow because the keratin present in the hair gives the hair durability and resistance to degradation. , and it remains a waste for a long time [8]- [10].…”

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confidence: 99%

Untitled

2022

Jurnal Polimesin

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Currently, composite applications range from the automotive, marine, and even aircraft sectors. One of the composites that have attracted a lot of attention from researchers is composites with natural fibres because natural fibre composites can be used as an alternative to synthetic or plastic materials. The low-density nature of natural fibres can provide good stiffness and strength as in fiberglass-reinforced composites. Coconut coir fibre and human hair waste are the basic materials for the manufacture of composites in this study. Because the amount is abundant so it is easy to obtain. The purpose of this study was to determine the effect of the variation of the best volume fraction of natural fibre composites with polyester matrix on the mechanical properties. The method used is hand layup with 3 variations of fibre volume fraction and polyester matrix, respectively 10:90, 15:85, and 20:80 and with the size of short hair fibres with a size of 3 cm and long coconut fibres with sizes according to the length of the print. The ratio of human hair fibre and coconut fibber is 1:1. Each fraction was tested 3 times to be more accurate. The results of the average tensile strength test with the largest ASTM D638 standard are at the volume fraction of 10:90 with a tensile strength of 19.2 MPa and the average impact test strength with the largest ISO 179-1 standard at the volume fraction of 20:80 is 17, 67 kJ/m². This study showed that the higher the fibres fraction in the composite, the lower the tensile strength but the higher the impact strength. Vice versa, the lower the fibre fraction in the composite, the tensile strength increases but the impact strength decreases.

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“…When failure of composite starts under external loads, the randomly oriented human hair micro fiber resist the crack propagation thus resulting in improved strength of the composites. Currently the human hair reinforced composite was used in construction, molded furniture and automobiles applications [17]. A feasibility study was conducted on human hair for evaluating the impact of using it as a reinforcement fiber and concluded that the human hair is suitable as reinforcement material in polymer composites due to its excellent physical, mechanical and thermal properties [15].…”

Section: Introductionmentioning

confidence: 99%

Effect of alkali treated and untreated cellulose fibers and human hair on FTIR and tensile properties for composite material applications

Selvakumar

Meenakshisundaram

2022

SN Appl. Sci.

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In recent years, the application of natural fiber reinforced polymer composite is rapidly increasing in different parts of the world due to its light weight, low cost, availability and feasibility of easy fabrication. This article focuses on the investigation of the physical and mechanical properties of natural fibers such as human hair, Sterculia foetida, delonix regia and caryotta obtusa fibers in terms of the analysis of the suitability of reinforcement material in composites. Untreated fibers were compared with NaOH treated fibers. Compositional analysis from Fourier Transform Infra-red Spectroscopy, tensile properties such as tensile strength, tensile modulus and percentage elongation of both untreated and treated fibers are discussed in detail. The properties of these natural fibers were compared with those of other natural fibers. The scope of addition of human hair, sterculia foetida, and delonix regia and caryotta obtusa fibers as reinforcement material in polymer composites were reported.

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Tensile Studies on Random Oriented Human Hair Fiber Reinforced Polyester Composites

Cited by 15 publications

References 9 publications

Study of the insulation and mechanical properties of hair-reinforced epoxy

Study of the insulation and mechanical properties of hair-reinforced epoxy

Untitled

Effect of alkali treated and untreated cellulose fibers and human hair on FTIR and tensile properties for composite material applications

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