A Study on Modified Mechanical and Wear Characteristics of Epoxy-Particulate Filled Homogenous Composites and Their Functionally Graded Materials

Siddhartha, _; Patnaik, Amar; Satapathy, Alok; Bhatt, Amba D.

doi:10.1115/1.4002543

Cited by 26 publications

(16 citation statements)

References 21 publications

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“…So, tensile stresses cannot transfer properly (from the matrix to filler) within FGMs. It is the reason that FGMs have lower tensile strength as compared to homogeneous composites . The same observation has been found for alumina (Al 2 O 3 ) filled epoxy based homogeneous composites and its FGMs .…”

Section: Resultssupporting

confidence: 68%

Repercussion of manufacturing techniques on mechanical and wear peculiarity of zno particulate‐filled polyester composites

Singh

Siddhartha

Yadav³

et al. 2016

Polymer Composites

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This article presents the comparison of mechanical and dry sliding wear peculiarity of zinc oxide (ZnO)-filled polyester composites, fabricated by two different techniques. These two techniques are simple mechanical stirring and vertical centrifugal casting. ZnO filled polyester based homogeneous composites are fabricated by simple mechanical stirring technique whereas composites fabricated by vertical centrifugal casting technique are functionally graded materials (FGMs). Dry sliding wear tests are performed over a range of sliding velocity (1.57-3.66 m/s), normal load (10-30 N), filler content (0-20 wt%), and sliding distance (1000-3000 m) using a pin-on-disc apparatus. This study establishes that the FGMs exhibit superior mechanical properties (except tensile strength) and wear resistance as compared with homogeneous composites. Among all the fabricated composites, FGMs filled with 20 wt% ZnO filler has maximum hardness and flexural strength i.e. 70 HRL and 39 MPa, respectively. Compressive and impact strength is maximum for 10 wt% ZnO filled FGMs with 36 MPa and 1.3 J, respectively. The tensile strength of homogeneous composites is 21.7% higher as compared with FGMs for 10 wt% of ZnO filler loading. FGM filled with 20 wt% of ZnO filler has minimum specific wear rate of 0.33 3 10 25 mm 3

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Section: Resultssupporting

confidence: 68%

Repercussion of manufacturing techniques on mechanical and wear peculiarity of zno particulate‐filled polyester composites

Singh

Siddhartha

Yadav³

et al. 2016

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…It was reported that an almost linear dependence of the Vickers hardness on the SiCp volume content was present. Siddhartha et al [30] investigated the mechanical and wear characteristics of 0, 10 and 20 wt.% TiO 2 -reinforced homogeneous epoxy composites and their functionally graded composite materials developed by simple mechanical stirring and vertical centrifugal casting technique, respectively. A series of test were conducted on a pin-on-disc test rig by varying sliding velocity and normal load.…”

Section: Introductionmentioning

confidence: 99%

Studies on dry sliding wear behaviour of functionally graded graphite particle-filled glass-epoxy composites

Annappa

Basavarajappa

2014

Composite Interfaces

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The dry sliding wear characteristics of glass-epoxy (G-E), graphite-filled G-E and functionally graded graphite-filled G-E composites were investigated using pin-on-disc test rig. The specific wear rate was determined as a function of applied load, sliding velocity and sliding distance. The results revealed that the specific wear rate increases in all the tested composites with increasing wear parameter. But, the admirable wear resistance was obtained with functionally graded graphite-filled G-E composite. The scanning electron microscope studies of worn-out surfaces support the involved wear mechanisms and are well indicated in the worn-out surface features such as matrix wear, fibre exposure, fibre breakage, fibre and matrix deboning, microcracking, debris formation, fibre cracking and removal of fibres.

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“…The transmission efficiency of the CNT‐PP gear with the steel gear increased by 1–1.5% and exhibited 30–80% increased life compared to the unfilled PP gears. Thermosetting (polymer matrix) based FGM has been fabricated by the researchers . Centrifugal casting technique has been used to fabricate thermoset FGM.…”

Section: Introductionmentioning

confidence: 99%

A novel technique for in‐situ manufacturing of functionally graded materials based polymer composite spur gears

Singh

Siddhartha

2017

Polymer Composites

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The authors propose a different manufacturing process developed to fabricate functionally graded material (FGM) based thermoplastic gear. FGM and homogeneous gears are manufactured by means of an especially designed mould and a punch. The punch acts as an integral rotating member of the mould and has a cavity carved in the shape of gear where the material is filled to produce gears. The punch rotates at 1,800 rpm for 2 min to force at segregation of fibers towards the periphery of the punch cavity because of the centrifugal force in action. Polypropylene (PP) filled with 15 and 30 wt% glass fibers is used to fabricate FGM and homogeneous gears. Unfilled PP gear is also fabricated for comparative study. Gradation in FGM gear is verified by Scanning electron microscope (SEM) analysis and Shore D hardness measured in three different locations of the fabricated FGM gears. Gradation in FGM gear is also verified by ignition loss test method. Continuous gradation is observed in FGM gear by SEM and confirmed by hardness test and ignition loss test. In this work, transmission efficiency of unfilled, homogeneous and FGM PP gears during operation is also investigated and compared. A polymer gear test rig is used for experimental work. This route shows a promising potential for fabrication of FGM based thermoplastics gears which otherwise is difficult to manufacture because of their fast solidification properties at room temperature. POLYM. COMPOS., 40:523–535, 2019. © 2017 Society of Plastics Engineers

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A Study on Modified Mechanical and Wear Characteristics of Epoxy-Particulate Filled Homogenous Composites and Their Functionally Graded Materials

Cited by 26 publications

References 21 publications

Repercussion of manufacturing techniques on mechanical and wear peculiarity of zno particulate‐filled polyester composites

Repercussion of manufacturing techniques on mechanical and wear peculiarity of zno particulate‐filled polyester composites

Studies on dry sliding wear behaviour of functionally graded graphite particle-filled glass-epoxy composites

A novel technique for in‐situ manufacturing of functionally graded materials based polymer composite spur gears

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