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La curva de Wöhler indica la suma de los cambios de carga que se pueden tolerar hasta la rotura de un material. Se determina en el ensayo de fatiga a una amplitud de carga constante (también denominado ensayo de Wöhler) según la norma DIN 50100 y se divide en las áreas fatiga de bajo ciclo K, fatiga de alto ciclo Z y fatiga de muy alto ciclo D .
S-N curve, also known as a Wöhler curve plots applied stress (S) against component life or number of cycles to failure (N). Engineers use this method to determine the fatigue life of a material. In materials science, fatigue is the weakening of a material caused by cyclic loading that results in progressive, brittle and localized structural damage.
La curva S-N, también conocida como curva de Wöhler, traza la tensión aplicada (S) contra la vida útil del componente o el número de ciclos hasta la falla (N). Los ingenieros utilizan este método para determinar la vida útil a la fatiga de un material.
The course of the S-N (Woehler) curve in the high cycle fatigue range is divided into 3 types: Horizontal course of the S-N curve: The pronounced high cycle fatigue strength or long-term fatigue strength frequently occurs with ferritic steels; Further drop of the S-N curve with a lesser inclination: often occurs with austenitic steel or aluminum
1 de may. de 2021 · This paper analyzes the essential structure of S-N curve and presents the mechanistic view of the fatigue phenomena which is useful for the prediction of fatigue life and fatigue limit and can contribute to reliable fatigue design in presence of defects.
8 de may. de 2019 · August Wöhler – founder of fatigue strength research - Zenner - 2019 - Steel Construction - Wiley Online Library. Steel Construction. Report. August Wöhler – founder of fatigue strength research. On the 200th anniversary of August Wöhler's birth. Prof. Dr.-Ing. Harald Zenner, Dr.-Ing. Karsten Hinkelmann. First published: 08 May 2019.
1 de ene. de 2018 · open access. Abstract. High cycle fatigue behaviour of materials and structures is widely assessed with respect to constant amplitude loading, because of extreme simplification of experimental procedures and numerical computations.
