B. NagarajaGanesh

Dr. B. NagarajaGanesh

orcid

Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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10 February 2021 in Journal of Natural Fibers
Verified
Journal Article
Closed access
V. MohanavelV. Mohanavel
V. Mohanavel
SKS. Suresh Kumar
S. Suresh Kumar
JVJ. Vairamuthu
J. Vairamuthu
PGP. Ganeshan
P. Ganeshan
BNB. NagarajaGanesh
B. NagarajaGanesh
The objective of this work is to find the influence of fiber content, stacking pattern, and their sequence on the mechanical properties of hybrid composites. Hybrid composites in four varieties with five laminae containing different stacking sequences of jute/madar/glass fibers were fabricated using hand-layup technique with glass fiber woven mats as their skin layers that just enclose bio-fibers oriented horizontally. The stacking sequences were GJMJG, GMJMG, GJGJG and GMGMG where G, J, and M represents glass fiber mats, jute, and madar fibers, respectively. The fibers in the core layer were oriented perpendicular to the enclosing adjacent plies and they may be jute/madar fibers depending on the stacking sequence. Load Vs deflection curves show that stress and strain were linear and all the samples fail abruptly except the sample that contains high proportion of madar fibers. Jute fiber layers imparted more strength and energy-absorbing capacity, whilst madar fiber layers imparted more strain and toughness to the composites. Studies showed that intercalation of glass fiber mats as the core and skin layers exhibited a significant effect on the mechanical properties of the composites than other samples. The morphology of the fractured samples exhibited compatibility between matrix and reinforcements.

1 November 2019 in Industrial Crops and Products
Verified
Journal Article
Closed access
BNB. NagarajaGanesh
B. NagarajaGanesh
PGP. Ganeshan
P. Ganeshan
PRP. Ramshankar
P. Ramshankar
KRK. Raja
K. Raja

19 March 2019 in Journal of Natural Fibers
Verified
Journal Article
Closed access
KYK. Yoganandam
K. Yoganandam
PGP. Ganeshan
P. Ganeshan
BNB. NagarajaGanesh
B. NagarajaGanesh
KRK. Raja
K. Raja
This study aims to characterize and find the suitability of Calotropis procera fibers to reinforce polymer matrices from Fourier-transform infrared spectroscopy and X-ray diffraction studies. Composite samples are prepared using varying weight % of Calotropis procera fibers with epoxy resin as matrix and the effect of fiber loading on the tensile, flexural, impact and water absorption properties are conducted and reported. It is found that fiber loading improves the mechanical strength of the composites and it is attributed to the strong bonding that exists between the fiber reinforcement and the matrix polymer. Fiber loading in excess of 40 weight % leads to decrease in the mechanical strength, while no significant difference in water absorption is noticed when the fiber loading exceeds 30 weight %. The study suggests that Calotropis procera fibers are promising candidates to reinforce polymers and can be used for the fabrication of composites.

8 January 2020 in Journal of Natural Fibers
Verified
Journal Article
Closed access
KRK. Raja
K. Raja
BPB. Prabu
B. Prabu
PGP. Ganeshan
P. Ganeshan
VSV. S. Chandra Sekar
V. S. Chandra Sekar
BNB. NagarajaGanesh
B. NagarajaGanesh
The present investigation is mainly aimed to characterize the cellulosic fibers extracted from the stem of Shwetark plant to test its possibility to be used as polymeric reinforcement. Chemical analysis conducted on the Shwetark fibers shows the presence of cellulose (69.65 wt. %), lignin (16.82 wt. %), wax (0.53 wt. %), ash (3.4 wt. %) and wetness content (8.8 wt. %). The density of the fibers is found as 1.364 g/cm3. Crystallinity index and the crystallite size of the fibers are calculated as 72.06% and 3nm, respectively, from X-ray diffraction analysis while the presence of functional groups is ascertained from Fourier transform infrared analysis. Thermogravimetric analysis shows that the fibers are thermally stable till 225°C, and the fiber morphology seen through scanning electron microscopic shows that the fibers are composed of densely and uniformly packed cellulose microfibrils. Atomic force microscopic studies exemplify that Shwetark fibers can be used for tribological applications. The mean tensile strength and percentage elongation of the Shwetark fibers are found as 309.68 MPa and 1.092%, respectively. Thus, the studies show the possibility of Shwetark fibers as prospective candidates to replace harmful synthetic man-made fibers.

27 January 2016 in International Journal of Polymer Analysis and Characterization
Verified
Journal Article
Closed access
BNB. NagarajaGanesh
B. NagarajaGanesh
RMR. Muralikannan
R. Muralikannan
The need for recyclable, renewable materials has resulted in an increased use of natural fibers for reinforcing polymers to suit a wide variety of applications. This study is mainly focused on the extraction and characterization of the lignocellulosic fibers derived from the ripened, dried Luffa cylindrica L. fruit. Characterization studies such as Fourier transform infrared spectroscopy, X-ray diffraction, and thermogravimetric analysis are conducted and reported. Composite samples prepared using unsaturated polyester resin show an increasing impact strength on fiber loading. Fractured surface of the composites are examined using scanning electron microscope. Results show the feasibility of fibers for reinforcement in polymers.

1 March 2018 in International Journal of Polymer Analysis and Characterization
Verified
Journal Article
Closed access
PGP. Ganeshan
P. Ganeshan
BNB. NagarajaGanesh
B. NagarajaGanesh
PRP. Ramshankar
P. Ramshankar
KRK. Raja
K. Raja
Natural fibers are identified as one of the effective alternatives for reinforcing the polymer matrices on account of their sustainability and renewable characteristics by replacing the synthetic fibers. This study is intended to apprehend the properties of the fibers derived from the stem of Calotropis gigantea plant. The functional groups of biopolymers were recognized by Fourier transform infrared spectrum. The crystalline nature of the cellulose that represents the mechanical strength and integrity of the fibers was found from the X-ray diffraction, whereas the thermal behavior was studied by thermogravimetric analysis. Scanning electron microscope was used to study the morphology of the fibers. The results of these analytical studies have shown that the crystallinity index of the fibers was 56.08% and the fibers were able to withstand a temperature of about 220°C proving that the fibers can be used as effective reinforcements for polymer matrices similar to the commonly used bio-fibers.