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Mechanical EngineerSep 2012
1. Design and calculation on hoist, girder crane, portal crane & jib cranes. 2. Engineering calculation in structural and mechanical components complying to AS 1418, AS 3678(&9), AS 3990, 4100, 4991, 1657, 1554, 1170 & DNV, ISO 9001 & ICHTHYS Spec.
Research AssistantFeb 2008 - Jun 2012 (4 years)
Ph.D Thesis 1. Analytic and numerical design analysis and dynamic characteristics known as Chatter in cold rolling. 2. Oil-film dynamics in journal and tapered roller bearing. 3. Identification of linear and non-linear dynamics in a rotating system.
Mechanical ResearcherMar 2005 - Feb 2008 (2 years)
1. design and analyse PEM Fuel-Cell systems and improve the system performance for vehicle testing. 2. Design efficient hydraulic leveling system for the streamlined Arc spot welding. 3. Design and analyse carbon disk plate for commercial vehicles.
Ph.D2008 - 2012 (4 years)
PREDICTION OF ELASTIC MODULUS IN DISCONTINUOUS COMPOSITE MATERIALS
An investigation to predict elastic composite modulus is presented to evaluate the stress transfer mechanism using the new shear lag analysis when the fiber aspect ratio is small in elastic loading. The stress concentration factor between fiber and matrix is expressed as a function of modulus ratio to calculate the elastic composite modulus. A FEA(Finite Element Analysis) model with axisymmetry is implemented to verify the results of composite properties.
Effects of Flow Characteristics in Polymer Electrolyte Membrane Fuel Cell
An experimental and numerical study of polymer electrolyte membrane fuel cell (PEMFC) is presented and compared with the experimental data to investigate the effects of pressure gradient, flow rate, humidification and supplied oxidant type for the practical application. The membrane and electrolyte assembly (MEA) materials are implemented by double-tied catalyst layers.
SIMULATION OF UNIT CELL PERFORMANCE IN THE POLYMER ELECTROLYTE MEMBRANE FUEL CELL
Fuel cells are devices that convert chemical energy directly into electrical energy. a large number of research work have been done during this years. Among many kinds of the fuel cell, polymer electrolyte membrane fuel cell is such kind of thing which work under low temperature. Because of the speciality, it stimulated intense global R&D competition. Most of the major world automakers are racing to develop polymer electrolyte membrane fuel cell passenger vehicles.
The effect of rolling speed and friction on cold rolling mill stability
In order to investigate the validity of a coupled mill vibration model presented in the dynamic rolling formulation, this paper presents the results of dynamic characteristics examining rolling force variations in response to rolling parameters.
The effect of tension variation in the dynamic roll gap on cold rolling mill stability
This paper investigates the nature of chatter, which is related to vibrations in horizontal and vertical direction, introducing the bearing dynamics and tension variation models, identifying transient characteristics of the coupled mass elements and demonstrating the limiting operational conditions of a cold rolling mill.
Dynamic Characteristics of a Multi-Body System – a Single Stand Cold Rolling Mill
Due to gauge variations, each octave mode of chatter is believed to be responsible for most of the damage to the product. In order to control chatter in cold rolling operations, an in-depth understanding of the fundamental mechanics of the vibration is required. Additionally, the research of dynamic phenomena in tandem cold rolling mills has been recently approached in many works, both theoretical and experimental.