Investigation of In-service Creep Failures of Aircraft Ti-6Al-4V Bolts Iordanis Spyroglou, Kyriakos Kourousis and Angelos Koutsomichalis MATEC Web Conf., 188 (2018) 04008 Published online: 07 August 2018 DOI: 10.1051/matecconf/201818804008