Valuable self-contained text, supplementing standard fracture mechanics texts by focusing on analytical methods for determining crack-tip stress and strain fields, presents the only proven solution technique for the second-order nonlinear partial differential equation governing a mode I elastoplastic crack problem. It also deals with plastic zone transitions, environmental cracking, and small-scale yielding versus exact linear elastic solutions. "Should prove to be a valuable resource to both the new student and the experienced researcher in fracture mechanics. It is recommended."-Applied Mechanics Review.