Browsing by Author "Biezma, M.V."
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Item A plain linear rule for fatigue analysis under natural loading considering the coupled fatigue and corrosion effect(2019-05) Calderon-Uriszar-Aldaca, I.; Briz, E.; Biezma, M.V.; Puente, I.; Tecnalia Research & InnovationFatigue under variable amplitude loading is currently assessed by applying the Palmgren-Miner linear rule in structural standards. However, this linear rule is inadequate in natural scenarios with coupled fatigue and corrosion effects, because the coupled corrosion-fatigue process synergistically accelerates deterioration. In view of the absence of specifications for the coupled fatigue-corrosion effect in structural standards, the objective here is to develop a simple and practical correction factor that will ensure a conservative linear summation of damage, taking the corrosion-fatigue effect into account. The theoretical consistency and the feasibility of the new adapted rule are tested in a case study.Item A plain linear rule for fatigue analysis under natural loading considering the sequence effect(2017-10) Calderon-Uriszar-Aldaca, I.; Biezma, M.V.; Tecnalia Research & InnovationFatigue under variable amplitude loading is currently assessed with the Palmgren-Miner rule in structural standards, ignoring the order of loading, which would require non-linear or mixed rules, especially for the random loading sequences applied to certain structures. Therefore, the goal is to develop a practical and simple correction factor ensuring the linear summation of damage is conservative, so as to take the sequence effect into account in random loading from natural sources. The theoretical consistency of this approach is demonstrated and a case study is developed to test the feasibility of the new rule and its simplicity.