THE INITIATION OF BRITTLE FRACTURE BY WEDGE PENETRATION Open PDF Document Details Document Type Technical Report Publication Date Jul 01, 1954 Accession Number AD0043845 Entities People E. Orowan Organizations Massachusetts Institute of Technology Tags Communities of Interest Energy and Power Technologies DTIC Thesaurus Topics Carbon Steels Crack Propagation Department Of Veterans Affairs Energy Engineering Government Procurement Governments Materials Mechanics Military Research Munitions New York Nuclear Energy Plastic Deformation Stress Concentration Temperature Gradients Tensile Stress