• "Acousto Ultrasonic Technique – Principles & Applications," International Congress on Ultrasonics, New Delhi, India, December 1990.
• "Teaching Real World Issues to Engineering Students Through Case Studies," Presentation of the 1997 ASEE Thomas C. Evans Award Lecture, Atlanta, GA, April 14, 1997.
• "Bringing Real World Issues into Engineering Classrooms Using Case Studies," XIII Chilean Engineering Education Congress, Concepcion, October 6-8, 1999.
• "Integrating Engineering Theory and Practice Through Case Studies Workshop on Mechanical Engineering Education in the Information Age," MIT, Cambridge, MA, April 8-9, 2000.
• “Bringing Real World Issues into Science Engineering Classrooms,” TCY21-Region II Joint Consortium of High School Teachers & College Professors, Childersburg, AL, April 2002.

WITH HONORORIA

• Three Invited Lectures on "Machine Tool Vibration," Unitary Summer School on Tool Design, conducted by the Indian Society for Technical Education, Government Polytechnic, Visakhapatnam, India, June 1978.
• "Noise Transmission Characteristics of Layered Panels," Invited Lecture to the Noise and Acoustics Division, NASA Langley Research Center, Hampton, VA, January 1980.
• "Nondestructive Evaluation of Materials & Structures Using Acoustic Techniques," Invited Lecture, Faculty and Students of College of Engineering, National University of Singapore, Singapore, May 1991.
• Three Invited Lectures on "Interior Cabin Noise Reduction Using SEA," for engineers at Bharat Earth Movers Ltd, Research and Development Division, KGF, India, Under the UNDP (TOKTEN) Program, September, 1993.
• "Vibration Based Process Monitoring of Carbon Carbon Composites," Invited Lecture to Faculty & Students Laboratoire de Mecanique Physique, Universite Bordeaux I, Talence, France, July 13, 1994.
• "Dynamic Characterization of Materials and Structures," Invited Lecture to Faculty & Students Laboratoire de Mechanique Physique, Universite Bordeaux I, Talence, France, July 22, 1994.
• Short Course on "Noise Control of Earth Moving Machinery," A Series of eight Invited Lectures, to engineers at Bharat Earth Movers Limited, KGF, India, United Nations Development Program (UNDP) Assignment, December 1995.
• "NDE of Structures Using Circumferential Waves," Invited Lecture to faculty and students at Laboratoire D'Acoustique Utrasonare Et D'Electronique University of Le Havre, France, May 1996.
• Two invited lectures on "Case Study Methodology for Engineering Education," SEATEC FORUM, Nashville, TN, February 1999.
• "Engineering Management," Invited Lecture to executives from Hadeed Corporation, Saudi Arabia, held at Fairfield, AL, February 2001.
• "Engineering & Technology Management Case Studies," Invited Lecture to executives from Hadeed Corporation, Saudi Arabia, held at Fairfield, AL, June 2001.
• “Bringing Real World Issues Into Engineering Classrooms,” Invited Lecture/Workshop for American Society for Engineering Education – SE Conference, Gainesville, FL, April 2002.
• “Bringing Real World Issues Into Engineering Classrooms,” Invited Lecture/Workshop for American Society for Engineering Education - SE Conference, Macon, GA, April 2003.

OTHERS

• "Response of Structures to High Intensity Acoustic Excitation," Invited Lecture to the Scientists at the Naval Science and Technology Laboratories, Ministry of Defense, Government of India, December 1978.
• "Acoustic Transmissibility of Structures," Invited Lecture to the Faculty and Students of Ray W. Herrick Laboratories, Mechanical Engineering Department, Purdue University, West Lafayette, IN, March 1980.
• "Application of the Intensity Technique for Measurement of Transmission Loss of Structures," Invited Lecture at the Institute of Acoustics, Technical University of Berlin, Berlin, Germany, September 1981.
• " Evaluation of Transmission Loss of Cylindrical Structures," Invited Lecture at the Department of Applied Mechanics, Indian Institute of Technology, Madras, India, December 1981.
• "Sound Intensity Technique," Invited Lecture at the Symposium on Acoustics, and the Acoustical Society of India Meeting, National Physical Laboratory, New Delhi, India, September 1982.
• "Methods of Identifying Noise Sources in Machines," Invited Lecture at the Symposium on Acoustics, and the Acoustical Society of India Meeting, Indian Institute of Science, Bangalore, India, November 1983.
• "Analysis of Acoustic Resonance Scattering by the Method of Moments," Invited Paper for the Symposium on Acoustic Resonance Scattering, Catholic University of America, Washington DC, May 1989.
• "Application of Method of Moments to Acoustic Scattering," Invited Talk presented at the Naval Ocean Research Development Activity, Stennis Space Center, MS, August 1989.
• "Nondestructive Evaluation of Composites," Invited Lecture to the Indian Society of Metals and Bharat Heavy Electricals Ltd. (Research and Development) Vikas Nagar, Hyderabad, India, December 19, 1990.
• "Sound Radiation & Scattering Application of Method of Moments," Invited Lecture at the Centre for Sound and Vibration, Naval Science & Technology Laboratories, Visakhapatnam, India, December 20, 1990.
• "Acoustic Emissions for On Line Tool Monitoring," Invited Lecture, Machining Research Seminar, AMTC, Auburn University, November 20, 1991.
• Three Invited Lectures on "Sound Power Measurement Using Sound Intensity Technique," for engineers at Bharat Earth Movers Ltd, Research & Development Division, KGF, India, Under the UNDP (TOKTEN) Program, September, 1993.
• "Statistical Energy Analysis," Invited Lecture to the Scientists at the National Aerospace Laboratory, Bangalore, India, September 14, 1993.
• "Sound Power Measurement," Invited Lecture to the Scientists at the National Aerospace Laboratory, Bangalore, India, September 17, 1993.
• "Vibration as an NDE Tool," Invited Lecture to the Composites Division and Structures Division Scientists at the National Aerospace Laboratory, Bangalore India, September 14, 1993.
• "Noise and Its Control," Invited Lecture to the members of the Aeronautical Society of India, Bangalore Branch, India, September 28, 1993.
• "Vibration Based NDE of Composites," Invited Lecture at the Symposium on Acoustics & Electromagnetics at the Catholic University of America, Washington, DC, June 1995.
• "Fluid Borne and Lamb Type Waves on Elastic Plates in Contact With Two Different Fluids," Invited Lecture to faculty and students at Laboratoire D'Acoustique Utrasonare Et D'Electronique University of Le Havre, France, May 1996.
• "Piezoelectric Materials and Nondestructive Testing," Invited Lecture at the workshop on "Materials for Energy Applications," Auburn University, AL, July 10, 1996.
• "Educational Initiatives in Mechanical Engineering at Auburn University The Case Study Method of Teaching," Invited Lecture presented at the MIT Mechanical Engineering Curriculum Workshop, October 7, 1996.
• "Optimization of Composites Through Ultrasonic Characterization," Invited Paper presented at the ASME International Mechanical Engineering Congress & Exposition, Atlanta, GA, November 1996.
• "Educational & Industrial Partnerships Novel Organic Semi-conducting Materials Program," Invited Lecture to the DOE EPSCOR Review Committee, Auburn University, AL, March 13, 1997.
• "Fluid-Borne and Lamb Type Waves on Elastic Plates in Contact with Two Different Fluids," Invited Paper presented at the 133rd meeting of the Acoustical Society of America, Penn State Conference Center, State College, PA, June 17, 1997.
• "Advanced Techniques in Ultrasonic Nondestructive Evaluation," Invited Lecture 134th Acoustical Society of America Meeting, San Diego, CA, December 1-5, 1997.
• "Engineering Case Studies and Technology Management," Invited Lecture, U.S. International University - COSTED Training Course on Technology Management, San Diego, CA, June 1998.
• "Multimedia Engineering Courseware – Della Case Study CD-ROM," Invited Lecture, Frontiers in Education Conference (FIE 98) Tempe, AZ, November 4-7, 1998.
• "Use of Multimedia Technologies in Classrooms," Invited Lecture, The College of Business Faculty, Tuskegee University, October 1998.
• " Case Study Methodology to Bring Real World Issues into Engineering Classrooms," Invited Lecture, South Eastern Case Research Association Conference, Savannah, GA, February 1999.
• "Research in Noise and Vibration Control," Invited Lecture, Faculty and Students of Mechanical Engineering, University of Concepcion, Concepcion, Chile, October 8, 1999.
• "Engineering and Technology Management," Invited Lecture, National Aerospace Laboratory, Bangalore, India, August 15, 2000.