"Contains only the papers published in JAI that were presented at the Eleventh International ASTM/ESIS Symposium on Fatigue and Fracture Mechanics (38th National Symposium on Fatigue and Fracture Mechanics) held during May 18-20, 2011 in Anaheim, CA, USA. The symposium was jointly sponsored by ASTM International Committee E08 on Fatigue and Fracture and the European Structural Integrity Society (ESIS)."--Foreword