Influences of various natural fibers on the mechanical and drilling characteristics of coir-fiber-based hybrid epoxy composites

Boopathi, Sampath; Balasubramani, V.; Kumar, R. Sanjeev

doi:10.1088/2631-8695/acb132

Cited by 29 publications

(5 citation statements)

References 41 publications

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“…The confidence interval for the research is 5%. If the percentage of contribution is less than the confidence interval value, then input factors are considered insignificant to the response [29]. The mean values and SN ratio values are used for Taguchi analysis.…”

Section: Taguchi Analysismentioning

confidence: 99%

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Experimental investigation on microhardness, surface roughness, and white layer thickness of dry EDM

Janardhana

Anushkannan²,

Dinakaran

et al. 2023

Eng. Res. Express

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In this research, the environment-friendly dry electrical discharge machining (EDM) process is investigated to improve the microhardness, surface finish, and white layer thickness of the machined surfaces using graphite-argon gas as a dielectric medium. The graphite powder, mixed with compressed argon gas, has been used to replace the existing dielectric medium in the EDM process. Gas pressure, discharge current, pulse width, and gap voltage were working as input parameters to reduce surface roughness and enhance the microhardness and white layer thickness. The Taguchi L16 orthogonal array is applied to the design and analysis of the experimental results. The minimum surface roughness (2.23 µm) of the HN31 steel has been attained by increasing the gas pressure up to 1.0 MPa and the minimum values of pulse width (40 µs), gap voltage (40 V), and discharge current (6 A). The maximum microhardness (501.04 HV) has been obtained at 1.2 MPa of gas pressure, 120 µs of pulse width, 60 V of gap voltage, and 18 A of discharge current. The maximum white layer thickness (16.24 µm) is achieved by the maximum values of gas pressure (1.2 MPa), pulse width (160 µs), gap voltage (70 V) and discharge current (18 A). The SEM analysis had been done to reveal the white recast layer thickness and surface roughness of the machined surfaces of the dry EDM process. The SR is increased by the recast layer, pores, and microcracks on the machined surfaces. Finally, the multi-criteria optimization technique: Weight Product Method (WPM) is applied to predict optimum process parameter settings: GP: 1.2 MPa, PW: 120 µs, GV: 50 V, and DC: 18 A to meet the best machining performances (MH=493.32 HV, WLT= 14.28 µm, and SR= 3.82 µm). The validation tests were done to confirm the predicted results obtained by both the Taguchi and WSM methods.

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Section: Taguchi Analysismentioning

confidence: 99%

“…These best-level values for each factor are taken for the calculation of the results. Finally, the best predicted results of responses are validated through a confirmation test [29].…”

Section: Taguchi Analysismentioning

confidence: 99%

Experimental investigation on microhardness, surface roughness, and white layer thickness of dry EDM

Janardhana

Anushkannan²,

Dinakaran

et al. 2023

Eng. Res. Express

Self Cite

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“…A compression test rig with a capacity of 2,000 kN was used, and the cube was loaded at a constant rate of 140 kg cm −2 min −1 until the specimen failed. Three cube specimens from each mix were tested for compressive strength (figure 4) [22,23].…”

Section: Experiments For Mechanical Characteristicsmentioning

confidence: 99%

“…With a beam specimen (500 × 100 × 100 mm) was tested for flexural strength according to IS 516 at 7, 28, and 90 days after curing according to ASTM-C293 standard [23][24][25]. A bending test fixture with two-point loading was used, consisting of two 38 mm diameter steel rollers spaced 133 mm apart.…”

Section: Flexural Strengthmentioning

confidence: 99%

Impact analysis of ceramic tile powder aggregates on self-compacting concrete

Harikaran¹,

Boopathi²,

Rajkannan³

et al. 2023

Eng. Res. Express

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Waste ceramic tile (CT) powders are used to improve the workability, mechanical properties, and durability of self-compacting concrete (SCC). The waste CT powder is prepared by mixing construction tiles, sanitary fittings, and electrical insulators, with different weight percentages mixed into the SCC. Experiments have been conducted to evaluate the workability, mechanical, and durability of SCC. The optimum compressive, flexural, and tensile strengths were predicted to be 52.5 MPa, 8.5 MPa, and 7.8 MPa. SCC's durability and workability characteristics are achieved by mixing 50% CT powder, which increases interlocking properties and meets EFNARC standards. It is concluded that CT powder can be substituted for conventional fine aggregate in concrete, increasing compressive, flexural, and split tensile strengths by 12.5%, 9.33%, and 28.76% compared to conventional SCC. The 50% CT powder mixed SCC is the optimum value for achieving optimal mechanical, durability, and workability characteristics. Samples of 50% CT powder-mixed SCC with 7, 28, and 90 days of curing processes and microstructure are also illustrated.

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“…Natural fiber‐reinforced polymer composites (NFRPCs) offer several advantages such as being biodegradable, lightweight, recyclable, and having a low production cost compared to conventional synthetic fiber‐based polymer composites. As a result, there has been a shift towards using plant‐based fibers like sisal, 1,2 jute, 3,4 banana, 1,5 hemp, 6 kenaf, 7 flax, 8 bamboo, 9,10 coir, 11 and others to replace synthetic fibers in composite materials. NFRPCs possess desirable characteristics that have enabled them to be utilized in various industries such as aeronautics, sports, construction, automobiles, and so forth 12,13 .…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of microwave‐processed linear low‐density polyethylene based sisal/jute hybrid laminates

Maurya,

Kumar,

Prasad

et al. 2024

Polymer Composites

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Natural fiber‐reinforced composites are gaining significant popularity for their biodegradability and eco‐friendliness. Fiber modifications and hybridization have been used to address issues like hydrophilicity and fiber inhomogeneity. However, efficient manufacturing is still a challenge for natural fiber‐reinforced polymer composites. The present study explores the potential of microwave processing of hybrid laminates composed of sisal and jute fibers. The laminates, consisting of linear low‐density polyethylene (LLDPE) as matrix and sisal and jute as reinforcement materials were subjected to microwave processing at specific power, time, frequency, and loads. Four types of laminates with different stacking sequences: sisal‐sisal‐sisal (SSS), sisal‐jute‐sisal (SJS), jute‐sisal‐jute (JSJ), and jute‐jute‐jute (JJJ) were developed. The developed composites showed ~3% void content, with the SJS and JSJ composite having the least and highest void content, respectively. The SJS composite showed the highest tensile and flexural strength of 15.27 and 20.40 MPa, respectively, out of all the configurations and an improvement of 42% and 85% over pure LLDPE. Hybrid composites having high‐strength fibers in the skin layer exhibited superior mechanical properties. Microscopic examination of the fractured specimens revealed that fiber pull‐out and fiber breakage were the primary failure mechanisms of failure. Lateral failure due to delamination between matrix and fiber was predominant with grip and gauge regions as frequent failure points. The incorporation of sisal and jute fiber reinforcement into the polymers doesn't change the thermal stability of the fabricated composites significantly. The above results show that microwave‐assisted processing is a promising method for producing natural fiber‐reinforced hybrid polymer composites.Highlights Development of hybrid laminates using microwave energy at 2.45 GHz. The mechanism of microwave‐based processing of polymer composites has been discussed. Effect of layering sequence on mechanical and thermal properties of the developed composite. Assessment of tensile strength with morphology, flexural strength and thermo‐gravimetric analysis.

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Influences of various natural fibers on the mechanical and drilling characteristics of coir-fiber-based hybrid epoxy composites

Cited by 29 publications

References 41 publications

Experimental investigation on microhardness, surface roughness, and white layer thickness of dry EDM

Experimental investigation on microhardness, surface roughness, and white layer thickness of dry EDM

Impact analysis of ceramic tile powder aggregates on self-compacting concrete

Development and characterization of microwave‐processed linear low‐density polyethylene based sisal/jute hybrid laminates

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