This textbook teaches macroscopic modeling for design, processing, testing and control of mechanical components in engineering. The first chapter dealswith the phenomenology of damage; the second couples damage to strains and covers the three-dimensional situation; the third is devoted to kinetic laws of damage evolution used by the author to unify many models; the fourthgives several methods to predict crack initiation. Detailed calculations andmany exercises help students to apply the powerful techniques to practical problems in engineering.