Browsing by Author "Bharath, K.N."

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Experimental investigation of thermal properties of areca fiber reinforced phenol formaldehyde composites
(2011) Manavendra, G.; Kumarappa, S.; Mohankumar, G.C.; Bharath, K.N.
In this research article, areca fiber composite laminates were prepared with randomly distributed fiber and different proportions of phenol formaldehyde (PF). The standard specimen of the areca PF composite was made at recommended temperature of 140 C under pressure in a hot press. The thermal properties of areca reinforced phenol formaldehyde (PF) composite materials were studied experimentally. The thermal properties like thermal conductivity, specific heat, thermal diffusivity, thermal resistivity and co-efficient ofthermal expansion have been determined for areca reinforced PF composites. The results were compared with other wood based thermal insulators, brick and asbestos cement sheets. Areca fiber reinforced PF composite shows lower thermal conductivity compared to other thermal insulating materials.
Investigation of fracture toughness analysis of polymer composites using finite element analysis
(Elsevier, 2024) Doddamani, S.; Begum, Y.; Bharath, K.N.; Rajesh, A.M.; Mohamed, K.K.
This chapter includes a study on using finite element analysis (FEA) to investigate the fracture toughness of polymer composites. This study’s objective is to assess polymer composites' fracture toughness. By considering the material properties and stress distributions, multiscale modeling approaches in FEA enable a thorough assessment of the material behavior under various loading circumstances. The analysis’s findings shed important light on the polymer composites' fracture toughness. The chapter ends with recommendations for further research and a review of the benefits and drawbacks of employing multiscale modeling and FEA techniques to analyze fracture toughness in polymer composites. The results of this work have significant ramifications for polymer composite structure design and optimization, particularly in applications requiring high fracture toughness. © 2024 Elsevier Ltd. All rights are reserved including those for text and data mining AI training and similar technologies.
Study on tearing strength of woven sisal fabrics for tents and polymer composite applications
(Taylor and Francis Ltd., 2023) Nagamadhu, M.; Kivade, S.B.; Jeyaraj, J.; Kumar, G.C.; Shivaraj, B.W.; Bharath, K.N.
The use of plant fibers as a reinforcement in composites has increased daily owing to their favorable environmental considerations. Fabric properties play a significant role in alignment during composites processing, enhancing the composite properties. However, the fabric structures are formed by warp and weft yarns. These yarns are subjected to axial and shear loads, respectively. However, very limited work has been carried out on the study involving the tearing strength of the fabric. So it is necessary to study the effect of the tearing load of fabrics before converting them into composites. This paper focuses on the tearing strength of the sisal woven fabrics in both warp and weft directions. Two plain and one weftrib fabrics are prepared using sisal fibers, and their physical properties were characterized as per textile testing standards. Tear strength has been determined by Elmendorf Tear and Single Rip Tear Method by varying crosshead speeds. The result shows that woven patterns and number yarns significantly impact tearing strength. In the case of the weft rib pattern, the warp direction exhibits the highest tearing strength compared to the weft direction. Also, in the case of weftrib fabrics, the weft direction indicates better-tearing strength than another woven pattern. © 2023 The Author(s). Published with license by Taylor & Francis Group, LLC.