Proceedings Proceedings of the 9th International Conference on Fracture, Fatigue and Wear : FFW 2021, August 2–3, Ghent University, Belgium / ed. F Abdel-Wahab. -- 1. vyd. -- Springer, 2022. -- ISBN : 978-981168809-6. -- ISSN : 2195-4356. Abdel-Wahab, F