Quasi-static strength and fatigue life of aerospace hole-to-hole bolted joints

Unlike hole coaxiality or other drilling defects, misalignment has never been a major concern in aeronautical structures as perfect bolt-hole alignment was ensured through the global assembly process. However, new industrial philosophy called hole-to-hole, which aims to decrease cost and time an unavoidable effect. A number of numerical studies have investigated load distribution among fasteners bolted composite joints case misalignments demonstrated significant impact on static behaviour. Pylons are structural subcomponents joining engines wings, that transmit high loads. Nevertheless, due its dimensions, pylon is suitable structure for hole-to-hole assembly. This article presents results experimental campaign single-lap shear titanium specimens with location errors. Several configurations examined compared reference no defects. The fatigue strength studied these different configurations. comparative study allows mechanical be estimated relation case, without