The Standing Committee on Defense Materials Manufacturing and Infrastructure (DMMI) convened a workshop on August 6-7, 2014, to discuss issues related to applying materials state awareness to condition-based maintenance and system life cycle management. The DMMI Standing Committee is organized under the auspices of the National Materials and Manufacturing Board of the National Research Council (NRC)1 and with the sponsorship of Reliance 21, a U.S. Department of Defense (DOD) group of professionals that was established in the DOD science and technology (S&T) community to increase awareness of DOD S&T activities and to increase coordination among DOD services, components, and agencies.
The workshop was conducted as a convening activity. In accordance with NRC procedures for a convening activity, all views expressed at the meeting are solely those of the individual participants who made them. No consensus findings, conclusions, or recommendations were developed at the workshop or as an outcome of the workshop, and no statements reported here are attributable to the DMMI Standing Committee, the NRC, or any other corporate entity. This report is a summary of workshop events prepared by the workshop rapporteur, and any statements or views summarized in the report reflect the rapporteur’s understand-
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1 Effective July 1, 2015, the institution is called the National Academies of Sciences, Engineering, and Medicine. References in this report to the National Research Council (NRC) are used in a historical context to refer to activities before July 1.
ing of the statements and views expressed by knowledgeable individual participants at the workshop, not a consensus view.
To organize the Workshop on Applying Materials State Awareness, the DMMI Standing Committee first selected a workshop planning group to identify workshop topics and agenda items, speakers to be invited to give presentations, and invited guests. The workshop planning group consulted with Reliance 21 and members of the defense materials and manufacturing communities to develop and organize the workshop. The workshop was held at the Keck Center of the National Academies of Sciences, Engineering, and Medicine, 500 Fifth Street NW, Washington, D.C., and was open to the public. Approximately 40 participants, including speakers, members of the DMMI Standing Committee, representatives of Reliance 21, other invited guests, and members of the public participated in the 2-day workshop.
The workshop was structured around three focal topics: (1) advances in metrology and experimental methods, (2) advances in physics-based models for assessment, and (3) advances in databases and diagnostic technologies. Appendix C lists the presentations in the workshop agenda under each of these topics. In addition to short questions and discussion sessions after individual presentations, the agenda included longer discussion sessions at the end of the first day and at the end of the workshop. Along with the three focal topics and the agenda shown in Appendix C, the announcement and invitation for the workshop offered the following list of areas that the planning group suggested as relevant for presenters and discussants:
- Three-dimensional characterization at multiscales—what is the next step in tomography?
- New methods for the inversion of nondestructive evaluation measurements to provide information on material state and damage state
- Imaging, from electron wave functions through atoms and nanostructures to mesoscale granular structures and macro engineering scale structures
- Metrology: property measurement techniques for advanced materials
- Materials qualification
- Modeling to predict material state evolution
- Condition-based maintenance
- New science in nondestructive evaluation of complex microstructures
