James F. Doyle James F. Doyle 1977 - Professor Degrees Dipl. Because of their size and low stiffness, large space structures are susceptible to wave motions due to transients. Inverse problems can be solved conveniently, thus making it useful for experimental systems identification studies. Spectral elements have already been developed for rods, beams and shafts, and their implementation in a general 3-D structural analysis computer program accomplished. Impact and Damage of Structures A very important aspect of structural performance is the ability to withstand impact and minimize the amount of damage caused.
Current investigations involve wave interactions with delamination flaws.
This has direct application to damage in composite materials. A novel layered spectral element has been developed for use with composite materials. This touches on some fundamental aspects of transform theory coupled with measurement theory. The payoff is that photographs combined with digital imaging techniques offer unique possibilities for recording and post-processing the data. Research Summaries Publications None at this time Conference Proceedings, Presentations, Invited Lectures Doyle, J. F., Determining Dynamic Crack Propagation Properties by Remote Measurements, SEM Proceedings, Nashville, TN, June 1999, pp.