The Modern Era of Experimental Modal Analysis One Historical Perspective

With the celebration of the 25th anniversary of the International Modal Analysis Conference (IMAC) in February 2007 by the Society of Experimental Mechanics (SEM), Sound and vibration asked the University of Cincinnati to chronicle how the modern era of experimental modal analysis developed to the jumping off point of the first IMAC conference back in 1982 in Orlando, FL. The University of Cincinnati was involved in one path of technology advances that contributed to Dick DeMichele and Pete Juhl deciding to work with Union College to put on the first IMAC. In fact, as is the case in many technology areas, the University did not start out with a mission of developing experimental modal analysis technology but instead was working on a machining problem for the U.S. Air Force. The application problem of machine tool vibration and machine surface roughness led to the need to become involved in the emerging analog and digital measurement technology and ultimately to the central role in the development of experimental modal analysis technology. This is our story.

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