- Fall 2008 - present: Chairman and Tenured Full Professor for the Mechanical Engineering Department of University of Mississippi at Oxford, MS. Responsible for : 1) effective implementation of the teaching and learning policy and strategy of the School of Engineering (SoE) and the University, 2) ensuring the necessary guidelines for high quality teaching by the faculty, 3) overall planning, development, renewal and changing of academic programs to ensure meaningful academic outcomes, quality, effectiveness and financial viability, and obtaining the necessary approval of the faculty, curriculum planning committee, and undergraduate academic council., 4) developing an action plan into effect through which the faculty's contribution to the realization of the strategic goals of the SoE and University, 5) achieving the financial management and needs of the department, faculty, and staff, 6) setting up the necessary structures that will ensure that the research in the faculty is relevant and of a high quality. 7) establishing a sound research culture in the faculty, initiating and promoting ethically accountable research of quality, and increasing research output, 8) managing service to the community as an integrated part of the teaching and research activities of the faculty, 9) maintaining and ensuring accepted performance standards towards fulfillment of the service conditions and work agreements of all staff within the faculty; 10) fostering and maintaining sound personal and professional relationships among the members of staff and between staff and clients;, 11) developing the expertise of staff; 12) promoting employment equity and the goals associated with it; 13) disciplinary procedures and grievances, and referring them where necessary, 14) submitting recommendations on top performers in the faculty for consideration for the Dean's Award for Outstanding Teaching, Award for Outstanding Research and Award for Outstanding Service, 15) developing and implementing assessment tools and writing the self study documents for ABET, 16) Fund raising for the School of Engineering through mechanisms build within the SoE and University of Mississippi, and 17) contributing towards the growth of enrollment, and 18) installing methods to increase retention rate and graduation rate.
- June 2000 - Sep 2008: Chief Scientist (Engineering Sciences), U.S. Army Research Office (ARO), RTP, NC: This Chief Scientist position in Department of Defense is called as "Science and Technology" (ST) position. The ''ST" designation is given to scientists and engineers who combine world-class technical expertise with demonstrated scientific leadership. An ST position is equivalent to a civilian Senior Executive Service position or the military rank of brigadier general. There are about 40 total ST positions in various scientific and engineering research areas in U.S. Army. The ARO ST: serves as the principal scientific authority and independent researcher in applied mechanics, including materials, electronics, atmospheric and terrain sciences, computational engineering, and other engineering sciences. The Chief Scientist for the engineering sciences initiates, technically plans, coordinates, evaluates, and conducts research and development to strengthen the in-house activities of the laboratory and strategic collaborations, both academic and inter-governmental relative to Army's critical technological area. Conceives, plans, and advocates major research and development activities; invites internationally known scientists periodically to brainstorm on strategic research initiatives, defines high risk but high paying new area of research for invention and innovation, serves as the technical area chief for small business innovation research for engineering sciences, functions as tri-service lead for computational structural mechanics area for the High Performance Modernization Office within the Office of Secretary of Defense, manages and coordinates the DoD/DOE MOU projects in computational mechanics area; consults with the Director, other Chief Scientist in other disciplines, Division Chiefs and staff concerning the total research program and results; monitors and guides the quality of scientific and technical resources; and provides expert technical consultation to other Army organizations, DOD and government agencies, universities, and industry. As the lead ST for Army Science Conferences, coordinates the review processes of papers submitted to ASC in 15 different Science and Technology areas, serves as a member of the selection committee for in-house laboratory innovative research (ILIR) projects in all Army laboratories, etc.
- July 1995 - May 2000: Team Leader, Material Modeling Team, Weapons and Materials Research Directorate (WMRD), U.S. Army Research Laboratory, Aberdeen Proving Ground, MD. Technical Supervisor for 6 PhDs and 2 M.S. Research: High Strain Rate Modeling of Ceramic, Metals, and Composites, Developing new impact and high strain rate experimental techniques, and shock wave propagation in layered materials. Duties: (a) Exercise leadership in motivating team members for creative thinking and innovation, (b) inspiring and guiding team members towards achieving goals and strategic objectives, (c) assess team members' unique capabilities and foster team work to achieve organizational goals, (d) initiate and conduct weapons and materials related research towards developing physics based models for use in armor/anti-armor design analyses, (e) promote the use of high performance computing for model validation and verification through advanced finite difference/element computer codes, (f) document the results in ARL reports and open literature, (g) determine material model parameters for metals and ceramics to be used in armor/anti-armor development and provide consultation for the model implementation to ARL and its customers, (h) set goals and scopes of research programs for the team members, and (i) seek funding support from R&D Engineering Centers and other services.
- March 1992 - June 1995: Mechanical Engineer (GS14/GS15): Duties: perform research on micromechanical constitutive and damage modeling of armor and anti-armor materials, raise reimbursable research funds from within DoD laboratories, publish research results in open literature and Army technical reports, present the scientific data in international conferences, special symposiums and workshops, work with shock wave and high strain rate experimentalists to analyze their results, and establish leadership in the area of material modeling among the academic and DoD/DOE communities, and serve as consultant in the area of constitutive/failure modeling for high strain rate and shock loading conditions. Promoted from GS14 to GS 15 in 1994. The GS 15 is the highest civilian rank among the General Schedule based army's civilian employees.
- June 1988- February 1992: Supervisory/Technical Group Leader for the Analysis and Computation Group at the University of Dayton Research Institute (UDRI). Scope of duties: (a) Perform appraisals of team members, recommend pay raises, and manage personnel and projects assigned to the group, (b) Provide technical leadership for areas of high strain rate material response and failure modeling, (c) Provide technical expertise on dynamically loaded material behavior and experimentation including that associated with composite materials damaged by low/high velocity impact, (d) Support analytical studies in the areas of subcritical crack growth, residual strength, nondestructive evaluation and behavior of bonded structures. (e) Expand capabilities of finite difference and finite element codes to model material and structural behaviors, (f) Meet with prospective sponsors to discuss technical needs and approaches (g) Write technical papers, reports and proposals. (h) Present significant results at technical conferences and symposia, and (i) Direct and train S&Es, graduate, and undergraduate students in the analysis of structural problems and in the development of appropriate software.
Served as an advisor for several graduate and undergraduate students, taught graduate level courses, and developed proposals for funding through collaboration with professors in the engineering school and researchers in the research institute, developed successful proposals to obtain grants and contracts from Navy, Air Force, Army, NASA, NSF, and Industries worth several millions of dollars and served as PI and Co-PI for several federal and industrial grants and contracts. Managed budget and personnel as the Group Leader for the computational modeling group in the structural integrity division of the research institute, published journal articles, papers in conference proceedings, published DoD technical reports, and proprietary documents for several industries. Conducted short courses on special engineering topics to scientists and engineers from industries, DoD and DOE laboratories.
The research Areas include high strain rate material response and failure modeling, composite materials damaged by low velocity impact, and debris Impact on Space Structures. The courses taught in University of Dayton: Continuum Mechanics, Fracture Mechanics, Theory of Plasticity, High Strain Rate Behaviors of Materials, and Penetration Mechanics.
- December 1980 - June 1988 (Associate Research Engineer) & July 1984 - June 1988 (Research Engineer) at the University of Dayton Research Institute, Dayton, Ohio. Duties: (a) Propose and develop advanced microphysical failure models for ductile materials using grants (NSF, AFOSR, and the Materials Laboratory at Wright Patterson Air Force base), (b) Support and perform research activities in the area of non-linear fracture mechanics, (c) Develop special purpose material model routines to solve crack propagation under large scale yielding, (d) Investigate the limitation of linear fracture mechanics theories, and (e) Design and perform split Hopkinson bar experiments to evaluate the effects of strain rate on the flow and fracture behavior in several metals.