TY - JOUR AU - Philippe Darcis AU - Christopher McCowan AU - H. Windhoff AU - Joseph McColskey AU - Thomas Siewert C2 - Engineering Fracture Mechanics DA - 2007-10-16 00:10:00 LA - en PB - Engineering Fracture Mechanics PY - 2007 TI - Crack Tip Opening Angle Optical Measurement Methods in Five Pipeline Steels ER -