Ravichandaran
@arunai.org
Professor, Department of Mechanical Engineering
Arunai Engineering College
RESEARCH, TEACHING, or OTHER INTERESTS
Mechanics of Materials, Mechanical Engineering, Polymers and Plastics, Materials Science
Scopus Publications
Scopus Publications
Ravichandaran Rathinavelu and Baskara Sethupathi Paramathma
Springer Science and Business Media LLC
Ravichandaran Rathinavelu, Baskara Sethupathi Paramathma, Divya Divkaran, and Suchart Siengchin
Springer Science and Business Media LLC
R. Ravichandaran, S. Selvarasu, S. Gopal, and R. Ramachandran
ITMO University
Ravichandaran Rathinavelu and Baskara Sethupathi Paramathma
Wiley
Ravichandaran Rathinavelu, Eakambaram Arumugam, and Baskara Sethupathi Paramathma
Wiley
Ravichandaran Rathinavelu, Eakambaram Arumugam, and Baskara Sethupathi Paramathma
Informa UK Limited
ABSTRACT The ecological conservation in the current global scenario has led scholars to use natural fibers as a reinforcement in composites that resulted in the exploration of new natural cellulose fibers. This research investigates the extraction and characterization of natural cellulose fibers from the stems of Buxus sempervirens (BS) plants, which are used to produce various products. Manual retting of stems resulted in Buxus sempervirens fibers production, which was then evaluated for their physical, chemical, thermal, crystallographic, and morphological characteristics. The results elucidated that BS fibers had a cellulose percentage of 51.78%, 18.42% hemicellulose, and 17.36% lignin. The Fourier Transform Infrared Spectroscopy results validated the chemical constituents. Crystallographic investigations utilizing X-Ray diffraction revealed a crystalline index of 18.05%. The thermogravimetric analysis of BS fibers showed char residue of 33% and a maximum degradation temperature of 263°C. The BS fibers revealed good surface interlocks that can be inferred from Scanning Electron Microscope. Thus, from the results compared with other natural fibers, we demonstrate that Buxus sempervirens fibers can be effectively used as reinforcement in polymeric composites.
R. Ravichandaran and G. Thanigaiyarasu
Trans Tech Publications, Ltd.
Aluminum alloy 5083 is taken for the study of fracture parameters in mixed-mode I/III. Three point bend specimens with load inclination and notch inclination are fabricated and precracked. They are tested with various inclination angles and for two different thicknesses. The results are analyzed and found that the fracture toughness decreases for larger inclination angles. Also, it is found that the thinner specimens are found to be tougher than the thicker specimens. Material and methods Symmetrical three-point bend cracked specimens have been used extensively in fracture mechanics to study mode I fracture properties because they are one of the standard types of specimens used in the ASTM codes for determining the fracture toughness JIc..In the mixed-mode I/III fracture, there is only a limited amount of experimental work done so far. The observations on combined mode I - mode III fracture have been very scarce and there is no general agreement among researchers on the effect of the addition of a mode III component to pure mode I loading. Limited study (Avci et al 2005 [, Kamat and Hirth 1996 [) has been done on bend specimens subjected to mixed-mode I/III when compared to the mode I case, i.e., a center-loaded specimen.
R. Ravichanda and G. Thanigaiya
Science Alert