From: surajit@rhine.eng.ohio-state.edu (Surajit Chakravarti)
Subject: MS Mech. Engg.; Over 10 years' Experience.
Keywords: Finite Elements, Stress Ananlysis, Welding 
Organization: The Ohio State University Dept of Electrical Engineering
Distribution: na
Date: Tue, 1 Sep 1992 01:31:13 GMT

			ADITYA (A. P.) CHAKRAVARTI
		           24, Montebello Lane
			    Kanata, Ontario 
			    Canada  K2L 1X6
			    (613)-836-3824



CAREER OBJECTIVES:	Challenging position as a Mechanical Engineer
			in a fast paced production, design or research
			and development areas in aerospace, power or 
			fabrication industry. This position should have
			many opportunities for an aggresive, dedicated
			individual with leadership abilities to advance.

SUMMARY OF EXPERIENCE:	Over 10 years of experience in mechanical
			testing and design, manufacturing (welding,
			sheet metal, forging), stress analysis, finite
			element analysis and programming, computer
			aided engineering. Well versed in advanced 
			materials such as fiber reinforced composites 
			as well as conventional materials such as
			steel, aluminum.

SPECIFIC AREAS OF EXPERTISE:

Stress Analysis:	Well versed in non-destructive and destructive
			stress measurement techniques using strain
			gauges. Experience in stress analysis of 
			pressure vessels (ASME codes), pipings, ship
			structures, ice breakers, bridges, mooring 
			columns, turbines.

Mechanical Design:	Applied innovative ideas for designing
			structures such as Anik-E satellite launch
			pads, winch assemblies,	control panels,
			pressure vessels, shafts and welded structures.


Thermal Analysis:	Extensively involved in heat flow studies due
			to conduction, convection and radiation. The
			application areas include welding, machine
			tools, rail/wheel interaction, forging, forming, heat
			flow in arctic tents, thermal distortion,
			residual stresses.

Thermal Distortion:	Have worked for several years in the areas of
			thermal distortion including experimental 
			measurements and analytical modelling
			(including finite element techniques). Projects include
			thermal distortion of space structures,
			tubular structures, NC machine tools, turbine
			blades, pressure vessels, pipings, etc.

Metallurgy:		Knowledgeable about metallurgy of steel
			(including HSLA and linepipe steels), heat
			treatments, optical Microscopy, hydrogen
			embrittlement (disbonding, cold cracks) and
			failure analysis.

Manufacturing:		Involved in various manufacturing activities
			that include welding, sheet metal fabrication 
			and tool design. Welding processes include
			SMWA, SAW, EB and GMAW. Sheet metal processing using
			mechanical and hydraulic presses include 
			drawing (ordinary and reverse), spinning (for
			producing smaller quantity parts), forming,
			stamping and embossing.

Mechanical Testing:	Mechanical tests include tensil, CTOD fatigue, charpy.

Fracture Mechanics:	Extensive experience in applying various
			fracture mechanics codes including BS PD6493,
			CEGB, ASTM etc. Application areas include 
			pressure vessels, pipes, ship structures, 
			rails and wheels.

Finite Element Analysis: Well versed and very comfortable with finite
			element program and program development.
			Expertise in commertial programs include
			ADINA, NASTRAN, ABACUS, ALGOR, FESDEC, ANSYS and COSMOS.

Computer Programming:	Adept at computer programming for engineering
			calculations including finite element programs
			on VAX/VMS, Apollo, IBM and Honeywell systems.

Power Plant Engineering: Exposure in the power industry include
			hydraulic and nuclear stations. Specific
			design experience include heat exchangers, 
			cooling systems, superheaters and reheaters. Also
			performed stress, thermal and power
			calculations and specifications for the
			thermodynamic cycles fro PWR, BWR and CANDU reactors.
			Capabilities also include piping layout and 
			stress analysis. Familiarity with ASME Boiler
			and Pressure Vessel Codes.


PROFESSIONAL ACHIEVEMENTS:
			
		*	Wrote, implemented and maintained several
			finite element programs on VAX, Honeywell,
			Apollo and IBM systems in Fortran. Use of
			these programs brought in excess of $500,000 revenues
			and saved several thousand dollars in other costs.

		*	Secured several revenue generating contracts
			due to my presence as project engineer.	
		
		*	Developed the most comprehensive model of weld
			heat source based on physics of heat flow for 
			accurate prediction of elasto-thermo-plastic 
			structural response due to welding. It has been
			used world wide as a basic finite element model.

		*	Developed field repair procedures for large
			hydro-electric turbine blades.

		*	Developed various heat transfer models for
			field repair of line pipes.

		*	Perfected the blind-hole drilling technique
			for in-situ stress measurements of structures.

		*	Using structural integrity techniques,
			eliminated stage inspections abd hence reduced
			manufacturing costs for	line-pipe welds.

		*	Using Engineering Critical Assessment (ECA)
			procudures, devised the most suitable
			technique for flaw assessment in pressure vessels.

PERSONAL ACHIEVEMENTS:	
		*	Did pioneering work in the areas of thermal
			distortion and residual stress.

		*	First Canadian paper to be published in Marine
			Structures (UK) journal.

		*	Developed the first Canadian
			thermo-elasto-plastic finite element program.

		*	Undertaken several studies with the sole aim
			of reducing manufacturing costs of welded structures.

		*	Obtained several monetary funding in support
			of my research activities.

TECHNICAL PUBLICATIONS:
			More than 20 published papers in leading
			technical journals and international conferences.


PROFESSIONAL RECORD:

	1986-1991	Senior Engineer, Fleet Technologies Limited (A
			Fleet Aerospace Company). Involved in Project 
			Engineering and management, structural
			analysis, weld mechanics, fractures.

	1982-1986	Research Metallurgist, AMCA International
			Limited. Involved in metallurgy of steel,
			stress and thermal analysis, structural
			analysis, fracture.

	1980-1982	Carleton University, Ottawa. Teaching and
			assisting in various undergraduate courses and
			laboratories (Deformation of Materials, 
			Thermodynamics, Statics, Dynamics).

	1974-1979	Production Engineer, Bharat Electronics
			Limited. Incharge of various projects and
			looking after the plant power generation and 
			overall operation.


PROFESSIONAL SOCIETIES:	
			Institute of Engineers
			Society of Experimental Mechanics
			Delegate to Residual Stress Committee of SEM
			Association of Composite Structures and Materials

EDUCATION:		Master of Engineering, Mechanical Engineering,
			Carlton University, Ottawa, 1982. 
			(Thesis: Finite element modelling of welds and
			heat sources).

			Bachelor of Engineering, Mechanical
			Engineering, Regional Engineering College, 1974. 
			(Special paper: Power Plant Engineering and practice).

OTHER COURSES/WORKSHOPS:
			*  Design and analysis of pressure vessels
			*  Fortran computer programming
			*  Nuclear Engineering - Reliability and safety
			*  Advanced stress analysis
			*  Finite Element Methods
			* Fiber reinforced composites.

REFERENCES:		Can be supplied on request.