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- Mechanical Characterization & Morphological Study of Calcium Silicate Reinforced Polyester
Laminate.
K S Mahesh and Mahesh R Hallur, Jagadguru Sri Shivarathreeshwara Academy of Technical Education, India
ABSTRACT
The aim of this work is to determine & compare the mechanical characterization such as tensile test,
compression test, flexure test & micro hardness of calcium silicate mixed with polyester resin lamina. It is
well known that inorganic filler particles enhance the mechanical properties of polymers. Calcium
silicate with different percentage is added to the resin material in order to enhance the mechanical
property. Calcium silicate helps the polyester resin to get the hardness to the certain level higher than the
individual polyester resin. The Calcium Silicate (CaSiO3) is available in powder form and is known for its
high strength & hardness. Test Specimen is prepared with different composition of calcium silicate in
polyester resin. asper the ASTM standard. The results have been plotted & compared. The morphology of
the calcium silicate added polyester resin laminate are observed in Scanning electron microscope. The
surface morphology of the laminates reveals that well distributed particles of calcium silicate.
- AMPPS_CNC in an Automated Modular Process Planning System
for Rotational Part
Shinde B.M1 and Khodke P.M2, 1Dnyanganga College of Engineering & Research, India and 2Government College of Engineering, India
ABSTRACT
The decision on sequencing of operations, tool travel and machining time
calculations is done in microplanning. After a set of processes has been selected for
all the features of part, the sequencing task begins by searching and analysing
relationship between features. This is done by rule to detect geometrical interactions
and the appropriate precedence relationship in knowledge base. For deciding
sequence of operations precedence relationship among the different operations is
developed using decision rules.
CNC program is generated based on the process plan of a given component.
The generated CNC program is then validated by simulation software before giving it
to CNC machine.
- Structural Dynamic Analysis of Bioinspired Carbon Fibre/Polyethylene Mav Wings
David Kumar, Mit Shah, P M Mohite and Sudhir Kamle,Indian Institute of Technology,India
ABSTRACT
Flapping wing micro air vehicles (FWMAVs) are small unmanned aircrafts or flying robots which are intended to be used for surveillance, reconnaissance, biochemical sensing, targeting, tracking, etc. To perform such missions, MAVs are required to do some specific operations such as hovering; slow and high speed flying; quick landing and take-off, etc. During flapping motion through surrounding air, wings interact with inertial and aerodynamic forces. For making successful flights in such conditions, wings must have properties such as flexibility, strength, less weight, longer fatigue life, etc. For producing such properties, wing material plays crucial role. Most of the research related to MAVs is based on aerodynamics and controls. Present research is based on materials and structural aspects of flapping wings. Here materials used are carbon fibres for making wing skeleton and polyethylene for wing membrane. The design for the wing of 113.8 mm length is inspired from giant hummingbird's wing. The wing sketch was developed in gambit software by taking position data, generated using digitizer, from printed image of hummingbird wing. Developed sketch was printed and used, as a guide, for making the wing skeleton. The polyethylene film with adhesive was laminated on the skeleton at 150 C. Natural frequencies, nature of mode shapes, and damping characteristics of final wings are determined here.
- Analysis of Surface Properties of Al2O3 Coating over Mild Steel Using Plasma Spray Process
I Arul Raj and S Ramachandran, Sathyabama University, India
ABSTRACT
Surface modification is a generic term now applied to a large field of diverse technologies that can be gainfully harnessed to achieve increased reliability and enhanced performance of industrial components. The increasing utility and industrial adoption of surface engineering is a consequence of the significant recent advances in the field. Among the various coating techniques to enhance the surface properties of Al2O3 coated mild steel we have adopted the thermal coating technique of Plasma spray process. The Thermal spraying is the coating deposition technology in which solid feedstock in form of powder, wire, or rods is introduced to a hot gas, flame, or plasma jet to form liquid droplets which are accelerated toward a substrate. In this paper we have discussed the surface morphology of Al2O3 coated over mild steel using various surface characterization techniques such as Scanning Electron Microscope and Atomic Force microscope.
- Dynamic Aerodynamic-Structural Coupling Numerical Simulation on the Flexible Wing of a Cicada Based on Ansys
DONG Qiang , ZHANG Xi-jin and ZHAO Ning, Northwestern Polytechnical University, China
ABSTRACT
Most biological flyers undergo orderly deformation in flight, and the deformations of wings lead to complex fluid-structure interactions. In this paper, an aerodynamic-structural coupling method of flapping wing is developed based on ANSYS to simulate the flapping of flexible wing. Firstly, a three-dimensional model of the cicada’s wing is established. Then, numerical simulation method of unsteady flow field and structure calculation method of nonlinear large deformation are studied basing on Fluent module and Transient Structural module in ANSYS, the examples are used to prove the validity of the method. Finally, Fluent module and Transient Structural module are connected through the System Coupling module to make a two-way fluid-structure Coupling computational framework. Comparing with the rigid wing of a cicada, the coupling results of the flexible wing shows that the flexible deformation can increase the aerodynamic performances of flapping flight
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