This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Nondestructive Evaluation Of Metal Matrix Composites: Report Of The Committee On Nondestructive Evaluation Of Metal Matrix Composites, National Materials Advisory Board, Commission On Engineering And Technical Systems, National Research Council; Volume 413 Of Publication NMAB National Materials Advisory Board (U.S.). Committee on Nondestructive Evaluation of Metal Matrix Composites National Academies, 1983 Technology & Engineering; Material Science; Composite materials; Technology & Engineering / Material Science

The surface transportation system is vital to our nation's economy, defense, and quality of life. Because threats against the system have hitherto been perceived as minor, little attention has been paid to its security. But the world is changing, as highlighted by dramatic incidents such as the terrorist chemical attack on the Tokyo subway in 1995. As a consequence, security concerns are now attracting more attention?appropriately so, for the threat is real, and responding to it is hard. Although the surface transportation system is remarkably resilient, it is also open and decentralized, making a security response challenging. Research and development can contribute to that response in important ways. Some important themes emerge from analysis of this strategy. First, a dual-use approach, in which security objectives are furthered at the same time as other transportation goals, can encourage the implementation of security technologies and processes. Second, modeling could be used more to develop a better understanding of the scope of the security problem. Third, DOT can play an important role in developing and disseminating information about best practices that use existing technologies and processes, including low-technology alternatives. Finally, security should be considered as part of a broader picture, not a wholly new and different problem but one that is similar and closely connected to the transportation community's previous experience in responding to accidents, natural disasters, and hazardous materials. Table of Contents Front Matter Executive Summary 1 Introduction and Background 2 Assessing Vulnerability 3 Establishing a Research and Development Strategy 4 Applying the Methodology: Some Specific Research and Development Topics 5 A Vision for the Future References Appendix A: Background on Systems Theory Appendix B: The Likely Course of Development of Chemical and Biological Attacks Biographical Sketches of Committee Members