Mechanics of Additive and Advanced Manufacturing, Volume 8 of the Proceedings of the 2018 SEM Annual Conference & Exposition on Experimental and Applied Mechanics, the eighth volume of eight from the Conference, brings together contributions to this important area of research and engineering. The collection presents early findings and case studies, including: Fatigue & Fracture in AM MaterialsAdditively Manufactured Metals & StructuresAM Process CharacterizationProcessing & Mechanical Behavior of AM MaterialsDynamic Response of AM MaterialsAdditively Manufactured Polymers & Composites