CRACK SHARPENING BY LOCAL FATIGUE. Paper No. 21.

Abstract

This report WM prepired is in account of work sponsored by the United States Government. Neither th* United States nor the United States Atomic Energy Commission, nor any of their employees, nor any of their contractors,.subcontractors, or their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness or usefulness of any information, apparatus, product or process disclosed, or represents that its use would not infringe privately owned Tights.