Fracture MechanicsIntended for engineers from a variety of disciplines that deal with structural materials, this text describes the current state of knowledge of how fractures in materials form and propagate, leading to failure. The book begins by describing the fracture process at the two extremes of scale: first in the context of atomic structures, then in terms of a continuous elastic medium. Treating the fracture process in increasingly sophisticated ways, the book then considers plastic corrections and the procedures for measuring the toughness of materials. Practical considerations are then discussed, including crack propagation, geometry dependence, flaw density, mechanisms of failure by cleavage, the ductile-brittle transition, and continuum damage mechanics. The text concludes with discussions of generalized plasticity and the link between the microscopic and macroscopic aspects. The text is suitable for advanced undergraduates. Problems are provided at the end of each chapter. |
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ASTM STP behaviour bending calculated Chapter characterised cleavage fracture component considered constraint crack extension crack front crack growth crack length crack plane cracked body criterion deformation theory derived determined dislocations displacement distance ductile ductile fracture edge crack elastic elastic-plastic equation equivalent failure fatigue finite element analysis following expression Fract fracture mechanics fracture occurs fracture toughness function geometry grain boundary initiation J. W. Hutchinson K₁ large deformation limit load maximum McClintock Mech metal method mixed mode normalised notch nucleation numerical Phys plane strain plane stress plastic deformation plastic material plastic strain plastic zone plate propagation radius ratio Rice shear stress slip line field small scale yielding stationary crack steel strain energy strain fields strain hardening stress and strain stress field stress intensity factor structure temperature tensile stress Testing and Materials thickness variation void volume fraction yield stress σο