The Board of Directors of MISTRAS Group, Inc. recently announced the passing of Sotirios J. Vahaviolos, the company’s founder, chairman emeritus, and board director. A leader and pioneer in the field of non-destructive testing (NDT) and acoustic emission (AE), Vahaviolos founded MISTRAS (originally Physical Acoustics Corporation) in 1978 and dedicated more than four decades to building it into a global leader in testing, inspection, and asset protection.
“On behalf of the entire MISTRAS family, I want to express our profound appreciation for the immeasurable contributions Dr. Vahaviolos has made to our company, our shareholders, and the communities we serve,” said Manny Stamatakis, executive chairman of the Board of Directors. “He built a diversified enterprise that now provides jobs to over 5,000 employees across the U.S., Canada, and several other countries. He was a man of honor and integrity, and he will be deeply missed.”
Vahaviolos and the Board of Directors took careful measures to ensure a seamless transition and continuity of leadership. MISTRAS will continue to operate as planned, with no changes to the company’s management or strategic direction. Prior to founding MISTRAS, Vahaviolos was a scientist and manager at AT&T Bell Laboratories, where he honed his expertise in electrical engineering and advanced NDT technologies. He earned a B.S. in Electrical Engineering (graduating first in his class) from Fairleigh Dickinson University, followed by an M.S., M.Phil., and Ph.D. in Electrical Engineering from Columbia University School of Engineering.
Vahaviolos was recognized as a Fellow of the Institute of Electrical and Electronics Engineers (IEEE), the American Society of Nondestructive Testing (ASNT), and the Acoustic Emission Working Group (AEWG). He also served as ASNT’s President (1992-1993) and Chairman (1993-1994) and received Gold Medals from ASNT (2001) and AEWG (2005) in recognition of his contributions to the field, in addition to other accolades from respected industry and scientific organizations. Vahaviolos was one of the six founders of NDT Academia International in 2008, further demonstrating his dedication to advancing nondestructive testing worldwide.
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