...need be invoked. Acknowledgments The author would like to acknowledge support for this research from the Department of the Navy, Office of Naval Research under Contract No. N00014-84-K-0027. APPENDIX Derivation for a Straight Crack Referring to Fig. 3, the stresses operative...

...Laboratory, Air Force Materiel Command, USAF, under agreement number P30602-95- 1-0018 and in part by the Department of the Navy, Office of Naval Research under contract number N00014-95-1-0591. Views and conclusions contained in this document are those of the authors...

...Performance Computing administered by the Institute for Advanced Computer Studies, University of Maryland. This research was supported by the Department of the Navy, Office of Naval Research under Grant No. NOOO 14-931-0806. The views and conclusions contained in this document are those of the authors...

...Command, USAF, under agreement numbers F30602-95-1-0018, F30602-97-2-0250 and F30602-98-2-0135 and in part by the Department of the Navy, Office of Naval Research under contract number N00014-95-1-0591. Views and conclusions contained in this documentare those of the author and...

...Thanks are due to Fabio Martinelli, David Sands, Eijiro Sumii, and Steve Zdancewic for helpful comments. This research was supported by the Department of the Navy, Office of Naval Research, ONR Grant N00014-01-1-0968. Any opinions, findings, conclusions, or recommendations contained in this...