A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
, Basawaraj
- Dynamic Mechanical Analysis on Jute Fiber Reinforced Polymer Composites for Patella Implant
Authors
1 School of Mechanical Engineering, Faculty of Engineering, Reva University, Bangalore. India., IN
2 Department of Aerospace Engineering VTU, CPGS, Muddenahalli, Chikkaballapura. India., IN
3 Department of Mechanical Engineering, Faculty of Engineering, Ramaiah Institute of Technology, Bangalore. India., IN
4 Department of Mechanical Engineering, Sapthagiri College of Engineering, Bangalore. India., IN
Source
Journal of Mines, Metals and Fuels, Vol 70, No 10A (2022), Pagination: 52-58Abstract
Natural fibres possess convincing properties when reinforced in polymers. In this study, JFRPs viscoelastic behaviour at low and elevated temperatures were explored. The present work focuses on the fabrication of jute reinforced polyester based polymer composites with different fiber compositions. Untreated long Jute fibres and mat structured Jute fibres were used for preparing the specimens. The Dynamic Mechanical Analysis (DMA) test was carried out on selected developed Polymer Matrix Composites (PMC). Density of selected PMCs are nearly equal to the bone density. So, PMC specimens were considered to carry out thermal analysis using DMA. In particular, by dynamic mechanical analysis experiments, properties such as storage modulus, loss modulus, tanδ and glass transition temperature were determined. It was found that the storage modulus (E’) recorded above the glass transition temperature (Tg) varies with increase in temperature. Along with the previous research of material properties for possible bioimplantation, this Tg value is identified for possible implementation as patella bone implant. The loss modulus (E”) and damping peaks (Tan δ) values were found to be reduced with increasing matrix loading and temperature.
Keywords
Polymer Composites, Dynamic Mechanical Analysis, Storage Modulus, Loss Modulus, Tan Delta and Glass Transition Temperature.
References
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- Dynamic Analysis of Flexible two Link Robotic Arm Considering Joint Stiffness
Authors
1 Department of Mechanical Engineering, M.S. Ramaiah Institute of Technology, Bengaluru 560054, India., IN
2 School of Mechanical Engineering, REVA University. Bangalore 560064, India., IN
3 Department of Aerospace Engineering VTU, CPGS, Muddenahalli, Chikkaballapura, India., IN
Source
Journal of Mines, Metals and Fuels, Vol 70, No 10A (2022), Pagination: 457-465Abstract
The robotic manipulator is a machine that can perform a variety of tasks according to specifications without the need of human interference. In order to model and control such devices, vibration analysis of flexible manipulators has become a critical field of study. The finite element approach has been used to analyze single and double connection flexible manipulators made of advanced composite material in the current study. For the modelling and study of the versatile composite manipulators, a three-noded beam feature is used. The effects of the taper angles of tapered flexible composite manipulators on the final product effector movement and vibration has been considered. In present work CATIA V5 is used to model the flexible single link robotic arm and static structural analysis to find stress and total deformation, dynamic analysis is carried out to find different modes, corresponding frequency, and life estimation of flexible single and double link robotic arm and also material optimization is done using different material composition for structural steel, aluminium and CFRP composite material using ANSYS WORKBENCH 18.2 (Finite Element Approach) for life estimation and evaluation using analytical approach.
Keywords
Flexible Manipulators, Boundary Conditions, Assumed Modes, Initial Modes.References
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