This special-topic book consists of a collection of technical papers assembled under the rubric of "Advances in Understanding the Fatigue Behavior of Materials". The focus of "Fatigue Behavior of Materials" centers on the changes in properties that occur upon applying cyclic loads. Following its recognition and increasing importance during the latter half of the nineteenth century, this branch of study has focused upon the study and rationalization of the engineering approaches that are commonly used to design against the initiation and/or propagation of the fatigue damage which would otherwise culminate in catastrophic failure.