Configurational Forces as Basic Concepts of Continuum Physics For the last decade the author has been working to extend continuum mechanics to treat moving boundaries in materials focusing in particular on problems of metallurgy. This monograph presents a rational treatment of the notion of configurational forces; it is an effort to promote a new viewpoint. Included is a presentation of configurational forces within a classical context and a discussion of their use in areas as diverse as phase transitions and fracture. The work should be of interest to materials scientists mechanicians and mathematicians. Configurational Forces within a Classical Context Kinematics Standard Forces. Working Migrating Control Volumes. Stationary and Time Dependent Changes in Reference Configuration Configurational Forces Thermodynamics. Relation Between Bulk Tension and Energy. Eshelby Identity Inertia and Kinetic Energy. Alternative Versions of the Second Law Change in Reference Configuration Elastic and Thermoelastic Materials The Use of Configurational Forces to Characterize Coherent Phase Interfaces Interface Kinematics Interface Forces. Second Law Inertia. Basic Equations for the Interface An Equivalent Formulation of the Theory. Infinitesimal Deformations Formulation within a Classical Context Coherent Phase Interfaces Evolving Interfaces Neglecting Bulk Behavior Evolving Surfaces Configurational Force System. Working Second Law Constitutive Equations. Evolution Equation for the Interface Two Dimensional Theory Coherent Phase Interfaces wtih Interfacial Energy and Deformation Theory Neglecting Standard Interfacial Stress General Theory with Standard and Configurational Stress within the Interface Two Dimensional Theory with Standard and Configurational Stress within the Interface Solidification Solidification. The Stefan Condition as a Consequence of the Configurational Force Balance Solidification with Interfacial Energy and Entropy Fracture Cracked Bodies Motions Forces. Working The Second Law Basic Results for the Crack Tip Constitutive Theory for Growing Cracks Kinking and Curving of Cracks. Maximum Dissipation Criterion Fracture in Three Space Dimensions (Results) Two Dimensional Theory of Corners and Junctions Neglecting Inertia Preliminaries. Transport Theorems Thermomechanical Theory of Junctions and Corners.