scholarly journals Thermal Degradation and Mechanical Behavior of Banana Pseudo-Stem Reinforced Composites

2019 ◽  
Vol 8 (4) ◽  
pp. 5899-5902
Keyword(s):  
Thermal Stability ◽  
Tensile Test ◽  
Composite Structures ◽  
Testing Machine ◽  
Banana Fiber ◽  
Thermogravimetric Analyzer ◽  
Surface Method ◽  
Epoxy Resin System ◽  
Tensile Data ◽  
Tg And Dtg

Banana fiber has potential to be utilized in bio-based composite structures due to its low price, abundantly available and biodegradability. However, the performance of this fiber is still not comparable to the synthetic polymeric system. In this work, the thermal stability analysis and tensile test of optimized banana fiber that was initially evaluated using response surface method were conducted. The thermal analysis and the tensile test were conducted using thermogravimetric analyzer and universal testing machine respectively. It was shown that the banana fiber content offered an outstanding performance in thermal stability. The highest thermal stability however, was found in neat epoxy resin system. The TG and DTG results showed the lowest amount of residue occurred in banana/epoxy composite. The tensile data properties revealed that banana composite is comparable to synthetic samples

Utilization of Microcrystalline Cellulose Prepared from Cotton Waste as Reinforcement in Polypropylene Composites

2012 ◽  
Vol 488-489 ◽  
pp. 696-700 ◽  
Author(s):  
Saowaroj Chuayjuljit ◽  
Korkaew Palasuth
Keyword(s):  
Thermal Stability ◽  
Microcrystalline Cellulose ◽  
Testing Machine ◽  
Dependent Manner ◽  
Polypropylene Composites ◽  
Thermogravimetric Analyzer ◽  
Reinforcing Agent ◽  
Cotton Waste ◽  
Dose Dependent ◽  
Thermal Stability Of

To obtain polypropylene/microcrystalline cellulose (PP/MCC) composites, PP was melt mixed with three loadings (5, 10 and 15 phr) of MCC prepared by hydrolyzing cotton waste with hydrochloric acid. The prepared MCC was characterized for its crystal structure, particle size, thermal stability and morphology. The tensile properties and thermal stability of PP/MCC composites with and without maleic anhydride-grafted polypropylene (MAPP) compatibilizer were investigated using the universal testing machine and thermogravimetric analyzer, respectively. The obtained results showed that the tensile strength, Young’s modulus and thermal stability of the composites were enhanced in a dose dependent manner, whilst the elongation at break was deteriorated with increasing MCC loadings, as compared with the neat PP. However, these properties were all improved with the addition of MAPP into the composites. This work showed that MCC and MAPP could be effectively used as reinforcing agent and compatibilizer, respectively in the PP matrix.

Hyperelastic models for the description and simulation of rubber subjected to large tensile loading

2021 ◽  
Vol 2 (108) ◽  
pp. 75-85
Author(s):  
Q.H. Jebur ◽  
M.J. Jweeg ◽  
M. Al-Waily ◽  
H.Y. Ahmad ◽  
K.K. Resan
Keyword(s):  
Tensile Strength ◽  
Carbon Black ◽  
Tensile Test ◽  
Accurate Description ◽  
Percentage Error ◽  
Relative Percentage ◽  
Elastomeric Material ◽  
Tensile Data ◽  
Relative Percentage Error ◽  
Hyperelastic Models

Purpose: Rubber is widely used in tires, mechanical parts, and user goods where elasticity is necessary. Some essential features persist unsolved, primarily if they function in excessive mechanical properties. It is required to study elastomeric Rubber's performance, which is operational in high-level dynamic pressure and high tensile strength. These elastomeric aims to increase stress breaking and preserve highly pressurised tensile strength. Design/methodology/approach: The effects of carbon black polymer matrix on the tensile feature of different Rubber have been numerically investigated in this research. Rubber's material characteristics properties were measured using three different percentages (80%, 90%and 100%) of carbon black filler parts per Hundreds Rubber (pphr). Findings: This study found that the tensile strength and elongation are strengthened as the carbon black filler proportion increases by 30%. Practical implications: This research study experimental tests for Rubber within four hyperelastic models: Ogden's Model, Mooney-Rivlin Model, Neo Hooke Model, Arruda- Boyce Model obtain the parameters for the simulation of the material response using the finite element method (FEM) for comparison purposes. These four models have been extensively used in research within Rubber. The hyperelastic models have been utilised to predict the tensile test curves—the accurate description and prediction of elastomer rubber models. For four models, elastomeric material tensile data were used in the FEA package of Abaqus. The relative percentage error was calculated when predicting fitness in selecting the appropriate model—the accurate description and prediction of elastomer rubber models. For four models, elastomeric material tensile data were used in the FEA package of Abaqus. The relative percentage error was calculated when predicting fitness in selecting the appropriate model. Numerical Ogden model results have shown that the relative fitness error was the case with large strains are from 1% to 2.04%. Originality/value: In contrast, other models estimate parameters with fitting errors from 2.3% to 49.45%. The four hyperelastic models were tensile test simulations conducted to verify the efficacy of the tensile test. The results show that experimental data for the uniaxial test hyperelastic behaviour can be regenerated effectively as experiments. Ultimately, it was found that Ogden's Model demonstrates better alignment with the test data than other models.

On the implementation of FEA for the design and development of a new biaxial tensile test fixture for uniaxial testing machine: a validation for cruciform test specimens

2019 ◽  
Vol 41 (9) ◽  
Author(s):  
Luis Fernando Puente Medellín ◽  
Víctor Alfonso Ramírez Elías ◽  
Antonio de Jesús Balvantín García ◽  
Perla Iris Vázquez Gómez ◽  
José Angel Diosdado De la Peña
Keyword(s):  
Tensile Test ◽  
Testing Machine ◽  
Design And Development ◽  
Test Fixture ◽  
Biaxial Tensile Test ◽  
Biaxial Tensile ◽  
Uniaxial Testing

Effect of Alkali and Silane Treatment on the Thermal Stability of Hemp Fibers as Reinforcement in Composite Structures

2011 ◽  
Vol 415-417 ◽  
pp. 666-670 ◽  
Author(s):  
Na Lu ◽  
Shubhashini Oza ◽  
Ian Ferguson
Keyword(s):  
Thermal Stability ◽  
Composite Structures ◽  
Natural Fiber ◽  
Alkali Treatment ◽  
Thermo Gravimetric Analysis ◽  
Natural Fibers ◽  
Gravimetric Analysis ◽  
Silane Treatment ◽  
Hemp Fibers ◽  
Thermal Stability Of

Natural fiber reinforced composites are being used as reinforcement material in composite system due to their positive environmental benefits. Added to that, natural fibers offer advantages such as low density, low cost, good toughness, high specific strength, relatively non-abrasive and wide availability. However, the low thermal stability of natural fibers is one of the major challenges to increase their use as reinforcing component. In this study, a thorough investigation has been done to compare the effect of two chemical treatment methods on the thermal stability of hemp fibers. 5wt% sodium hydroxide and 5wt% triethoxyvinylsilane was used for the treatment of hemp fibers. Fourier transform infrared spectroscopy, scanning electron microscopy and thermo gravimetric analysis were used for characterization of untreated and treated fiber. The results indicated that 24 hours alkali treatment and 3 hours silane treatment time enhanced the thermal stability of the hemp fiber. However, alkali treatment shows better improvement compared to silane treatment.

Pyrolysis Characteristics of Pine Powder and Polyvinyl Chloride of Municipal Solid Waste in Thermogravimetric Analyzer

2013 ◽  
Vol 781-784 ◽  
pp. 2009-2012 ◽  
Author(s):  
Hai Yu Meng ◽  
Shu Zhong Wang ◽  
Lin Chen ◽  
Jun Zhao ◽  
Zhi Qiang Wu
Keyword(s):  
Weight Loss ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Heating Rate ◽  
Polyvinyl Chloride ◽  
Heating Rates ◽  
Pyrolysis Characteristics ◽  
Thermogravimetric Analyzer ◽  
Tg And Dtg ◽  
Obvious Weight Loss

The pyrolysis characteristics of pine powder and polyvinyl chloride (PVC), respectively representing the biomass and plastics components of municipal solid waste, were studied in a thermogravimetric analyzer, and the influence of heating rate on pyrolysis characteristics was also investigated. The pyrolysis temperature was heated from ambient up to 900 °C at different heating rates including 10, 20 and 40 °Cžmin-1. The pyrolysis of pine powder was composed of two obvious weight loss phases, which were dehydration and the decomposition of cellulose and hemicellulose. The lignin in pine powder decomposed over a broad temperature range until 900°C. The pyrolysis of PVC was complicated, and included the release of hydrogen chloride (HCl), the formation of hydrocarbons. Besides, the additives in PVC decomposed at about 600 °C. The TG and DTG curves of pyrolysis for pine powder and PVC were similar at different heating rates, however, each weight loss phase of pyrolysis was shifted to high temperature with increasing the heating rate.

Fabrication and Characterization of Banana Fiber Reinforced Unsaturated Polyester Resin Based Composites

2020 ◽  
Vol 29 ◽  
pp. 84-92
Author(s):  
Md. Sahadat Hossain ◽  
Mashrafi Bin Mobarak ◽  
Farzana Khan Rony ◽  
Sazia Sultana ◽  
Monika Mahmud ◽  
...  
Keyword(s):  
Polyester Resin ◽  
Natural Fiber ◽  
Unsaturated Polyester ◽  
Testing Machine ◽  
Unsaturated Polyester Resin ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Banana Fiber ◽  
Bending Modulus ◽  
Ft Ir

Concerning the importance of composite material for multi-purpose applications, an attempt has been taken to synthesize composites using natural fiber with unsaturated polyester resin. Since the use of synthetic polymer plays a key role in polluting the environment, we have used natural fiber (banana fiber) as an alternative source. Our approach dealt with the preparation of reinforced composites by hand lay-up technique using 20 % banana fiber (by weight) as reinforcing materials. Several techniques were applied to characterize synthesized composites e.g. universal testing machine (UTM), Fourier transform infrared (FT-IR) spectroscopy, and scanning electron microscopy (SEM). UTM facilitated the measurement of the tensile strength (TS), tensile modulus (TM), elongation at break (EB), bending strength (BS), and bending modulus (BM) while functional groups were confirmed by FT-IR and the morphology of the composites was investigated by SEM. Observed results revealed that the TS, TM, BS, and BM followed an increasing fashion of 100%, 53%, 75%, and 55% respectively with respect to the matrix materials. On the other hand, the EB of the composite reduced drastically by 50%. Hence, higher mechanical properties were obtained for the banana fiber reinforced composites (BFRC) than the unsaturated polyester resin (UPR) matrix.

Comparison of Yarn Tenacity Data Obtained using the Uster Tensorapid, Dynamat II, and Scott Skein Testers

1992 ◽  
Vol 62 (3) ◽  
pp. 175-184 ◽  
Author(s):  
Lloyd B. De Luca ◽  
Devron P. Thibodeaux
Keyword(s):  
Tensile Test ◽  
Fiber Length ◽  
High Speed ◽  
Test Results ◽  
Slow Speed ◽  
Spun Yarn ◽  
Ring Spun Yarn ◽  
Tensile Data ◽  
Yarn Tenacity ◽  
One Machine

High speed yarn tensile testing machines increase production of yarn tensile data, but no comparisons with data from older, slow speed testing machines have been successful in determining whether these machines produce the same results. This work compares yarn tenacity data from three different machines. A family of five ring spun yarn sizes, each with five different twist factors, covers the entire range of spinning parameters for staple fibers. A new method used to analyze yarn data to determine the number of broken fibers and the effective fiber length acting in each yarn converts yarn tenacity into tenacity per broken fiber per effective fiber length. Converted yarn data from each machine show the effects of the time-to-break on tenacity and how the single strand yarn tensile test differs from one machine to another and with skein tensile test results.

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