Collection of selected, peer-reviewed papers from the 3rd International Conference on Uncertainty in Mechanical Engineering (ICUME). The aim of ICUME is to discuss criteria, methods, and technologies to describe, evaluate and control uncertainty in mechanical engineering applications. International scholars and specialists come together and provide a broad discussion forum on the description, evaluation, avoidance, elimination of and adaptation to uncertainty. It is the aim to control uncertainty throughout the entire lifetime in planning, development, production, and usage of mechanical structures and systems. Engineers, mathematicians and other experts working in uncertainty evaluation exchange the latest research results and share their experiences in uncertainty control.