Abstract
The notion of the history damage factor introduced in the first part of this paper poses problems when loading half-cycles interrupted by smaller cycles are considered. Consequent formulation of the hypothesis solving these problems for general complex loading is presented for the integrity of the theory. General formulation of the proposed hypothesis preserves its simplicity. Physical aspects of the hypothesis are briefly discussed and some ideas for further research presented.

Key words
cumulative fatigue damage, hypothesis, loading sequence, complex loading

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