NASATECHNICALMEMORANDUM89006 NASA-TM-89006 19860021599 r STRESS ANALYSIS of the CRACKED LAP SHEAR SPECIMEN: An ASTM ROUND ROBIN W. S. JOHNSON ]?ORD_. -_-,. L._. ' " ,:_ "i _' ,J_O National Aeronauticsand LIBRARY, NASA Space Administration HAL',PTON, VIR,qff.IIA Langley ResearchCenter Hampton, Virginia 23665