PS DHANASEKARAN
(Puttagounder Dhanasekaran Swaminathan)
Address: 3027 Shadowood Pkwy SE, Atlanta, GA-30339Cell: 001 316 670 3685
E-mail:
EDUCATION
- Ph.D., Mechanical Engineering, Wichita State University, Wichita-KS-USA, May 2013
- Master of Engineering. Engineering Design, PSG College of Technology, University of Madras, India, 1982.
- Bachelor of Engineering, Mechanical Engineering, University of Madras, India, 1980.
ACADEMIC EXPERIENCE
Southern Polytechnic State University
Position: Assistant Professor from Fall 2013 (August)
Mission: Teaching classes for undergraduate students and train them for practical requirements of the industry.
Courses taught: Machine design, Engineering Materials
Wichita State University
Position:Instructor
Mission: Teaching classes for both undergraduate and graduate students and motivate them to understand the practical requirements of the industry.
Following courses were taught for both undergraduate and graduate students as a direct instructor and course materials for ME665-Selection of Materials for Design, Manufacturing and ME864- Physical Metallurgyand ME750P Failure Analysis were developed as part of teaching. Wherever possible a practical scenario was given as an example and students were made to understand the industrial needs from my long industrial experience.
ME251-Materials Engineering LabFall- 2009Summer- 2012
Experimental study of important structural materials used in engineering, including metals, polymers, and composites.
ME250-Materials EngineeringSummer- 2011 Fall-2012
Studies important structural materials used in engineering, including metals, polymers, and composites, primarily from a phenomenological viewpoint.
ME665-Selection of Materials for Design and ManufacturingFall-2011Fall-2012
Focuses on the selection of engineering materials to meet product and manufacturing, solution to various product and manufacturing problems by appropriate selection of materials is illustrated through the use of numerous examples and case studies.
ME864-Physical MetallurgySpring- 2012
Covers a range of basic concepts in physical metallurgy, topics include structure and diffraction, dislocations, defects and thermal processes, solid solution and hardening, diffusion, and phase diagrams and transformations.
ME750P Failure AnalysisFall 2012
Introduction to failure analysis for the novice and focuses on the examination of the principles and practices of failure analysis of metallic, polymers, ceramics, composites and electronic materials. This course is designed to be of benefit to materials engineers and material scientists and other engineers.
Ph.D. - Dissertation work
Dissertation title: Fabrication and Characterization of Highly Porous PEEK Bionanocomposites Incorporated with Carbon and Hydroxyapatite Nanoparticles for Scaffold Applications.
Polyetheretherketone has been used to fabricate highly porous Bionanocomposites foams for scaffold application. Melt casting and salt porogen leaching methods were adopted to have adequate pore size and necessary percent of porosity. Hydroxyapatite and carbon particles were used to improve cell attachment to the foams and to enhance mechanical properties of the materials. Carbon fiber and carbon nanotube with various wt% were uniformly dispersed. The foams with different percent of porosity were fabricated by varying wt% of salt porogen. Compression test proved that carbon particles improved mechanical properties. Cell viability and bone marrow cell culture test proved to yield encouraging test results. Results relevant to mechanical and biological test proves that PEEK Bionanocomposites foams fabricated via melt casting and salt porogen leaching are the potential candidate for scaffolding application.
EMPLOYMENT HISTORY
Penn Machine Company, Blairsville-PAJan 2013 - May 2013
Position: Senior Mechanical Engineer
Mission: Design and Development of various sizes of gears, gearboxes and engineering responsibility of mechanical products.
Job detail:
- New design and reverse engineering of machined components including specifying material and heat treat
- Investigating opportunities for process and design improvements/cost reductions
- Analyze and product testing data & reports to determine if product meets functional & performance specifications
- Develop, maintain & implement standardization in accordance with PMC engineering standards and mechanical testing
- Fixture and special tooling design as needed
- Perform Finite Element Analysis (FEA) as required
- Calculate and validate loose gear geometry data
- Develop, maintain & implement design, material and testing specifications and procedures
- Provide guidance and assistance in the Gearbox Assembly department
- Provide Gear and Gearbox Engineering support for all Penn Machine divisions
BrijSystems LLc, Wichita-KS.Summer- 2010 and 2011
Position: Engineer –Design and manufacturing.
Mission: Design modeling of various Machines and programming for CNC machines.
Job detail:
Design and modeling of various machines such as, Panel welder machine, Panel bending machine, CNC programming for number of aircraft parts for manufacturing and 3D modeling of the same using CATIAV5 and Inventor.
Electronics Corporation of India limited, India.Dec 1987 to July 2009
Position: Deputy General Manager
Mission: Research, Design and development and manufacturing of static and mobile communication antennas and drive systems of various sizes.
Job detail:
Various types of antennas from 1.2m to 11m diameter of both static and mobile antennas for telemetric tracking, communication, television transmission and receive, mobile vans, telemedicine vans etc. were developed as part of research and designed, manufactured and installed.
Antenna research and design involves multi-disciplinary engineering, such as structural, mechanical with drives and controlsand heavy manufacturing, production and planning and Selection of various materials. Design of drives system, bearing, and transmission elements includes shafts, chains, seals and couplings etc. optimization of Structures using FEA techniques.
Manufacturing techniques and quality requirements and Design for Manufacturing and Assembly techniques were used to optimize production and assembly.
Antenna controls with design of motors, GPS, Magnetic compass.
Shanthi gears limited, India.Sep 1982 to Dec 1987
Position: Senior Design Engineer
Mission: Design and Development of Spur, helical, worm reduction gear boxes
Job detail:
Design ofSpur, helical, worm reduction gears and gear boxes, shafts, bearings, seal, load, power and life cycle calculations, assembly configuration of the product, manufacturing drawings (using AutoCAD).
product development in thefollowing, pattern, casting (cast iron steel casting, aluminum gravity die casting, centrifugal casting etc., sheet metal dies, jigs and fixture etc., helped to bring out quality products.Total numbers of 925 gear boxes were developed.
Established process and assembly standards, DFMA were effectively applied to optimize number of parts and assembly time.
Most recent Research/professional Projects
Design and development of V-Sat mobile antennas (which is also called compact satellite earth terminal) of three different sizes 1.2, 1.8, 2.4meter diameter was done as part of departmental research towards new product development.
This mobile antenna is designed with unique features; it is pre-assembled and tested in the factory, packed in assembled condition to the customer’s site. No site installation is required except lifting the fully assembled antenna as explained in manual, and fix on roof of the van, where mounting holes were already made as per the requirement, carry out testing in guidance with manual and it is ready for operation. Another major advantage of this design is, fold the reflector to the pre fixed position and lock it and it is ready for transportation. At any required location by opening the reflector to the specified position with help of antenna control system antenna is ready for operation.
V-Sat Mobile Antenna is a motorized compact satellite earth terminal, which can operate with most of the geo stationary satellites in orbit , in extended C-band (or any other band optionally) for V-Sat communication.
The antenna and its related parts are mounted in a vehicle. Antenna and antenna control system are capable of withstanding shock and vibration experienced during transportation even if the van travels for hundreds of miles especially on country roads. Antenna system is designed with concept of elevation over azimuth and powered with motors. Polarization also is motorized for remote operation. The whole antenna system, reflector, mount etc., is made out of light material to have reduced weight with required rigidity.
Antenna reflector with feed can be made collapsible during transportation, so that the height of the antenna is as low as possible, so as to provide maximum working height inside the van, without exceeding the maximum vehicle height permissible by road transport authority, this antenna system makes easy deployment by simply driving to zero degree in both azimuth/elevation axes, makes the system ready for operation.
This mobile antenna is designed with Automatic Acquisition system, to position the antenna in azimuth and elevation directions for a given satellite longitude. The system consists of antenna platform with azimuth/elevation mount, angle encoders, stepper motors, ground positioning system (GPS), Digital compass Digital inclinometer and antenna control system (ACS). The system is useful for faster access of the satellite.
The following descriptions gives how the system works when positioned in the field under normal conditions, the antenna is in stowed condition. On deployment at the site the antenna opens out and reaches the desired offset angle. For positioning the antenna to the desired satellite, the operator enters the satellite longitude in the antenna control system. Using the latitude and longitude information from GPS, ACS calculates the required azimuth and elevation angles. The digital compass gives the position of true north. The angle encoders provide the angle information in both azimuth and elevation directions. The ACS commands the antenna to move to the required azimuth by computing the difference in angle from true north to the present position. Similarly inclinometer provides the offset angle in the elevation direction. The antenna is positioned in the elevation direction by computing the difference between the desired position and the offset angle. Any fine tuning required in positioning the antenna can be carried out by the manual control. A separate control is provided for polarization to control of the feed system.
APPLICATION
1) For communication at remote areas
2) Live telecast program
3) For natural disasters management
4) Telemedicine application
This terminal also is used for live telecast of any special program, sports, games, natural disasters relief operation etc., as camera and video equipment’s are added to the terminal, receive and transmission is done through satellite, from where we can receive and local transmission is done.
Major breakthrough was achieved when this terminal was put into medical application, called telemedicine, where antenna and its equipment’s were mounted as part of the mobile medical van, this becomes a mobile terminal which can perform both receive and transmission of voice and picture, main station is established in hospital.
Doctor who goes with this telemedicine van to rural area’s for treatment whenever, he needs expert opinion from a specialist establishes link with their main hospital through this antenna, from this terminal they can transmit X-rays ECG, scan report etc., live scanning can also be transmitted, so that specialist doctor can receive other end advises as per the need, they can also discuss simultaneously.
THIS APPLICATION CONSIDERED TO BE VITAL IN RURAL MEDICAL APPLICATION.
[MODEL NO: 12VSAT SERIES]
Industry and design experience:
Various mechanical designs and development of various products, Design of all basic mechanical elements such as, Design of Spur gear, helical gear, worm reduction gears , Shafts, Bearings, Seals, Load, power and life cycle calculations, Assembly configuration of the product, 2D & 3D solid modeling, All types of casting, Sheet metal dies, jigs and fixture, Light and heavy fabricated structures with high precision (accuracy of less than 120 seconds).
Various types of antennas from 1.2m to 11m diameter of both static and mobile antennas fortelemetric tracking, communication, television transmission and receive, mobile vans, telemedicine vans etc.
Antenna research and design involves multi-disciplinary engineering, such as structural, mechanical with drives and controls, antenna controls with design of motors, GPS, Magnetic compass.
Weight varied from 200 pounds to 100,000 pounds
Few Products what I have design and manufactured
PUBLICATIONS AND PROFESSIONAL PREPARATION
PEER-REVIEWED JOURNAL ARTICLES
1) D.K. Kalla, B. Zhang, R. Asmatulu, P.S. Dhanasekaran, Current Research Trends in Abrasive Waterjet Machining of Fiber Reinforced Composites, Materials Science Forum (Volume 713)Volume: Advances in Non-Conventional Materials Processing Technologies, Pages37-42,
REFEREED CONFERENCE PROCEEDINGS
1. PS Dhanasekaran, D. Kalla, and Nito Yoda, 2010, “Recent Advances in Cutting Tool Materials and Tool Coatings for Machining Composite Materials,” 2010 Tooling for composites conference, Society of Manufacturing Engineers, UTAH, USA.
2. Devi Kalla, PS Dhanasekaran, and R. Asmatulu, 2011, “Investigative study on machinability aspects of fiber reinforced composite machining using statistical analysis (ANOVA)”, SME, Composites Manufacturing 2011, Apr 12-14, Dayton, OH, USA .
3. PS. Dhanasekaran, Devi Kalla and R. Asmatulu, 2011, “Human safety problems in industrial machining of composite materials”, SME, Composites Manufacturing 2011, Apr 12-14, Dayton, OH, USA.
4.Devi Kalla, R. Asmatulu and PS. Dhanasekaran, 2011, “New Progress in Damage Evaluation and repair of Fiber Reinforced Composites”, SAMPE 2011 – Long Beach, CA, May 23-26.
5. D. Kalla, K. Nahusha and PS. Dhanasekaran, 2011, “Optimization of Cutting Forces in End Milling of CFRP composites using Response Surfaces and Desirability Function Approach”, SAMPE 2011 – Long Beach, CA, May 23-26.
6. PS. Dhanasekaran, Devi Kalla and R. Asmatulu, 2011, “Sustainability in Nanomanufacturing: Status and Vision for the Future”, Proceeding of the 2011 International Manufacturing Science and Engineering Conference, ASME, June 13-17, Oregon State University, Corvallis, OR, USA.
7. Devi Kalla, PS. Dhanasekaran and R. Asmatulu, 2011, “Abrasive Waterjet machining of Fiber Reinforced Composites, 4th Manufacturing Engineering Society of International Conference, MESIC, Spain.
8) B. Zhang, H. Misak, P.S. Dhanasekaran, D. Kalla andR. Asmatulu, 2011, “Environmental Impacts of Nanotechnology and Its Products” Midwest Section Conference of the American Society for Engineering Education,Sep 28-30, Russellville, AR.
9. B. Zhang, PS. Dhanasekaran, R. Asmatulu, and D. Kalla, 2011, “Development of highly conductive polymeric nanocomposite films on the surface of composites against lightning strikes”, SAMPE 2011 – Fort worth, Texas, USA.
10. PS. Dhanasekaran, D. Kalla and R. Asmatulu, 2011, “Advances and Challenges in Manufacturing and Processing of Polymeric Nanocomposites”, SAMPE 2011 – Fort worth, Texas, USA.
11. D. Kalla, PS. Dhanasekaran, B. Zhang, and R. Asmatulu, 2011“Sustainability of Fiber reinforced composites: Status and vision for the future”, ASME 2011 International Mechanical Engineering Congress, Denver, Colorado, Nov 11-17.
BOOK CHAPTERS
1.Devi K Kalla, PS Dhanasekaran, (2011), “Milling of Fiber Reinforced Polymer Composites,” Milling: Operations, Applications and Industrial Effects, Lucas P. Durand, ed., Science Publishers, USA. ISBN: 978-1-61470-903-9.
TECHNICAL PRESENTATIONS (Invited)
"Mechanical properties of the materials",Wright state university, Dayton, USA, Department of Mechanical Engineering, June 2012.
"Introduction to Biosensors", Wichita State University, USA, Department of Bio Engineering, July 2012.
"Applied Mechanics", Wichita State University, USA, Department of Engineering Technology, Sep 2012.
"Composites Manufacturing", Millersville University, Lancaster, USA, Mechanical Engineering Technology, Feb 2013.
PROFESSIONAL ACTIVITIES AND SERVICES/PROFESSIONAL AFFILIATIONS
Member: Society for the Advancement of Materials and Process Engineering (SAMPE).
Member: Society of Manufacturing Engineering (SME).
PAPER REVIEWS:
ASME 2013, Manufacturing Science and Engineering Conference June 10-14, 2013. Madison, Wisconsin.
SAMPE Tech conference, Wichita, Kansas, Oct 21-24, 2013
CHAIR - COFERENCE
Session Chair, SAMPE Tech-2013, Wichita, Kansas, USA (Oct 2013) - Invited
COMPUTER SKILLS
I have experience and expertise in using the following computational tools
CAD/CAM:Autodesk Inventor, and CATIA V5, AutoCAD.
Engineering Design and Analysis, FEA, ANSYS, Gear teq, Power gear, MATLAB.
STUDENTS MENTORED:
Graduate/undergraduate students at WSU:
Three graduate students are being trained for their thesis.
Four undergraduate students are being trained in research work as part of engineering 2020 WSU.
Undergraduate students at Industry:
More than 10 undergraduate students were guided for their senior projects.
Laboratory manual, instructional materials:
1)Introduced course project for MET 3132 Materials Engineering - fall 2013
2)Course material developed for MET 4141-Machine Design (as new text book was adopted) - fall 2013
Service to the program:
Member –Machine design and Graphics committee- MET Department from fall 2013
Service to the community:
Member – BEST robotic committee fall 2013
Professional Growth and Development:
Master advisory program – completed first year training needs fall 2013
TADL – Registered for TADL for development of full online course MET 3132, and TADL classes stared from 11/08/2013