Premium
GUST SPECTRUM FATIGUE CRACK PROPAGATION IN CANDIDATE SKIN MATERIALS
Author(s) -
WANHILL R. J. H.
Publication year - 1979
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1979.tb00364.x
Subject(s) - structural engineering , truncation (statistics) , materials science , paris' law , fatigue testing , fracture mechanics , composite material , engineering , crack closure , mathematics , statistics
— Flight simulation fatigue crack propagation tests were carried out on 2024‐T3, 7475‐T761 and mill annealed Ti‐6A1‐4V sheet in thicknesses up to 3 mm and representative for transport aircraft lower wing skin stiffened panels of end load capacities 1·5 and 3 MN/m. The performance of 2024‐T3 was much superior, owing mainly to greater retardation of crack growth after severe flights. The effect of load truncation was also greater for 2024‐T3. The significance of the results for the choice of advanced structural concepts and materials and the choice of truncation level is discussed. A recommendation for further investigation is given.