• 1999-present - Senior Scientist and Manager of Turbomachinery and PropulsionSystems Team; OAI
• 1993-97 - Grant Funded Senior Scientist, Resident at NASA Glenn Research Center; Cleveland State University (1993-1998) and University of Akron (1998-1999)
• 1990-93 - Research Assistant, School of Engineering Mechanics; Cleveland State University
• 1987-92 - NASA/OAI Collaborative Aerospace Summer Internship at NASA GRC

• Ph.D. in Engineering Mechanics; Cleveland State University, Cleveland, OH (1997)
• M.S. in Engineering Mechanics; Cleveland State University (1993)
• B.S. in Mechanical Engineering; Cleveland State University (1990)

Summary:
Dr. Andrew L. Gyekenyesi is a Senior Scientist performing research on-site at NASA Glenn Research Center in Cleveland, Ohio. He also serves as the manager of OAI’s Turbomachinery and Propulsion Systems Team. Besides his management and research obligations, his duties involve the administration and execution of NASA issued grants. This includes writing grant proposals as well as conducting all aspects of the research. Dr. Gyekenyesi is responsible for various laboratories dealing with rotor health monitoring, high temperature mechanical testing of advanced materials, and nondestructive evaluation (NDE) techniques. Dr. Gyekenyesi has recently developed and currently operates a laboratory dealing with rotor dynamics and diagnostics. The techniques for rotor health monitoring include vibration based methodologies (i.e., global approach) utilizing state-of-the-art, non-contact displacement probes coupled with physics based models for assessing the damage state and remaining life of the rotor system. Wireless techniques based on piezoceramic sensors that “ride on the rotor” represent the localized approaches for health monitoring. These sensors are used either passively (e.g., acoustic emissions) or actively (e.g., guided wave ultrasonics or impedance based health monitoring). Regarding the mechanics of advanced materials, numerous in-situ NDE techniques are utilized for documenting material behavior during static and fatigue tests. The NDE parameters are utilized as damage variables in deformation/life models. The in-situ NDE techniques of interest consist of acoustic emissions, guided wave ultrasonics, x-radiography, thermal wave imaging, thermal stress analysis as well as impedance based health monitoring. Dr. Gyekenyesi has 15 years of experience in the fields of mechanics of materials, advanced nondestructive evaluation, and structural health monitoring. He has published over 60 papers, acted as an invited speaker in both the US and Europe, is a member of the Graduate Faculty at Cleveland State University, chaired numerous SPIE (International Society for Optical Engineering) conferences relating to health monitoring and NDE of aerospace materials and composites, and is currently serving on the NDE executive committee for the SPIE Annual International Symposium on NDE for Health Monitoring and Diagnostics.