which he developed many patents. He was a strong supporter of nondestructive evaluation (NDE) technology throughout the corporation, particularly its aerospace divisions, where the B-1 strategic bomber program required new quantitative NDE approaches to meet and satisfy the new and challenging damage-tolerant design requirements derived from fracture mechanics principles.
NDE capabilities were required to both “size” a flaw and detect it with quantitatively known reliability. These newly placed demands on NDE spurred theoretical and experimental efforts at the North American Rockwell Science Center. Bruce played a key role in the development of this advanced quantitative NDE technology, in which he specialized in elastic wave interactions with defects. In 1980 he joined the faculty at Iowa State University as part of a core group enlisted to advance the engineering science of NDE and to form the center for NDE at that institution. During his years at Iowa State University, he became an internationally recognized leader in NDE, continuing his research specialties in theories of elastic wave scattering for defects (“measurement models”); theories and practices for NDE characterization of material properties, including microstructural features using elastic waves; and the development of theories and practices for determination of the probability of detection of “fatal” defects in structures by ultrasonic means. He served as graduate thesis adviser for 12 M.S. degree students and 22 Ph.D. degree students and as supervisor for 7 postdoctoral fellows. Bruce also played a key role in the development and teaching of undergraduate NDE courses and the first-of-its-kind NDE minor at Iowa State University. He leaves a rich technical legacy of over 200 publications and critical reviews in refereed edited journals and book chapters, as well as 24 patents.
Besides his research and teaching duties, Bruce was active in administering NDE activities at Iowa State University, serving as director of the center for NDE from 1997 until his death on March 7, 2011, and as co-organizer and host of the internationally attended annual “Review of Progress in Quantitative NDE” and meeting of the directors of the World