This book contains the abstracts presented at the 12th International Conference on Fracture Fatigue and Wear (FFW 2024), which was held in Xi'an, China, during the period 28-31 July 2024. Previous conferences were celebrated in Jinan (China, 2010), Kitakyushu (Japan, 2013), Kitakyushu (Japan, 2014), Ghent (Belgium, 2015), Kitakyushu (Japan, 2016), Porto (Portugal, 2017) and Ghent (Belgium, 2018 - 2023). The overall objective of the conference is to bring together international scientists and engineers in academia and industry in fields related to fracture mechanics, fatigue of materials, tribology and wear of materials. The conference covers industrial engineering applications in the above fields, including theoretical and analytical methods, numerical simulations and experimental techniques. One of the aims of the conference is to promote cooperation between international scientists and engineers from a large number of disciplines who are involved in research related to fracture, fatigue and wear.