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 Materials Additively Manufactured Metals & Structures AM Process Characterization Processing & Mechanical Behavior of AM Materials Dynamic Response of AM Materials Additively Manufactured Polymers & Composites.