TY - RPRT TI - Recent Developments and Challenges Implementing New and Improved Stress Intensity Factor (K) Solutions in NASGRO for Damage Tolerance Analyses AU - Cardinal, Joseph W. AU - McClung, R. Craig AU - Lee, Yi-Der AU - Guo, Yajun AU - Beek, Joachim M. PY - 2014 UR - https://ntrs.nasa.gov/citations/20140012990 ID - 20140012990 ER -