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THE USE OF A LOAD SPECTRUM IN PREDICTING AIRFRAME FATIGUE DAMAGE
Author(s) -
Adrov V. M.
Publication year - 1994
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.1460-2695.1994.tb00782.x
Subject(s) - airframe , probabilistic logic , simple (philosophy) , structural engineering , function (biology) , vibration fatigue , fatigue testing , fatigue limit , spectrum (functional analysis) , damage tolerance , engineering , computer science , mathematics , statistics , aerospace engineering , algorithm , physics , philosophy , epistemology , evolutionary biology , composite number , biology , quantum mechanics
— The use of a load spectrum in airframe fatigue life predictions is considered. In‐service fatigue lives are predicted using a probabilistic approach that takes into account the main aspects of deterministic methods. Expressions are derived for damage under fixed flight‐hours together with data scatter. The influence of material fatigue properties on scatter are shown. An algorithm for obtaining simple formulae for accounting for equivalent airframe fatigue conditions are demonstrated. An example is given for deriving a safe fatigue life distribution function.