Abstract
The article presents the results of low-(LCF) and high (HCF) fatigue in samples of aluminum alloy 2024-T4, which is used in aircraft construction, mainly for highly loaded structural components, including for plating and fuselage frames and girders rotor blades of helicopters. This alloy is used where it is required a high strength to weight ratio of the product and high resistance to fatigue. Moreover, it is poorly weldable and has a low corrosion resistance. The tests were performed on hourglass and cylindrical samples, with a parallel and perpendicular orientation relative to the "direction of embodiment" or blank sheet rolling direction. Material for the study was collected from the production line design elements PZL-130 Orlik TC-II. There have been a description of the analytical results in the form of Manson-Coffin and Morrow equations.
Highlights
Aluminum alloys are widely applied in civilian and military engineering (Heinz et al 2000, Petrasek et al 2013, Problemy badań i eksploatacji... 1993)
The EN AW-2024 T4 aluminum alloy is used in highly loaded structural components and plating where a high strength-to-weight ratio and high fatigue resistance are required
A comparison of Manson-Coffin curves in low-cycle fatigue analyses demonstrates that transverse samples are characterized by somewhat longer lowcycle fatigue than longitudinal samples
Summary
Aluminum alloys are widely applied in civilian and military engineering (Heinz et al 2000, Petrasek et al 2013, Problemy badań i eksploatacji... 1993). The EN AW-2024 T4 aluminum alloy is used in highly loaded structural components and plating where a high strength-to-weight ratio and high fatigue resistance are required. Analyses of the performance of aircraft structures indicate that mechanical strain is the main cause of damage to aviation plating (Sieniawski 2002). Plating is damaged due to the initiation and propagation of cracks, and the material’s strength is determined by the number of cycles until destruction within a given range of plastic or total strain values (Nogueira et al 2020, Polak 1991). Analyses of materials’ behavior under variable loads in a small number of cycles provide valuable information and support the identification of cyclic fatigue mechanisms, localization of strain, cracks and failure of structural components (Li et al 2019, Feng, Qian 2018, Ignatovich et al 2013)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
