NASA Report 165990 THE CRACK AND WEDGING PROBLEM FOR AN ORTHOTROPIC STRIP A. Cinar and F. Erdogan LEHIGH UNIVERSITY Bethlehem, Pennsylvania 18015 Grant NGR 39-007-011 September 1982 NI\SI\- National Aeronautics and Space Administration Langley Research Center Hampton, Virginia 23665 NASA-CR-165990 19820018831 S i: P ? II 108? I 1 ':.' I L-. LANGLEY RESEARCH CENTER LIBRARY, NASA VIRGINIA 111111111111111111111111111111111111111111111 NF01918