Fatigue test data of S355 steel and 7075-T651 aluminum alloy subjected to in-phase multiaxial cyclic loading with superposed static components

The provided data set includes the applied nominal stress amplitudes and mean values of cyclic loading, and the number of cycles to failure defined as a 20% drop in specimen stiffness. The hourglass-shaped specimens were subjected to cyclic uniaxial plane bending, torsion, and their in-phase combination. The data were collected to verify the multiaxial fatigue life prediction models of parametric form (standard models) and the recently developed model based on the Gaussian process (Karolczuk, A.; Słoński, M. Application of the Gaussian process for fatigue life prediction under multiaxial loading. Mech. Syst. Signal Process. 2022, 167, 108599). The full description of experimental tests can be found in Kluger, K.; Karolczuk, A.; Derda, S. Application of life-dependent material parameters to fatigue life prediction under multiaxial and non - zero mean loading. Materials (Basel). 2020, 13.

本数据集包含循环载荷下的名义应力幅值和平均值，以及定义为试样刚度下降20%的循环次数。哑铃形试样经历了循环单轴平面弯曲、扭转及其相干组合的测试。数据收集旨在验证参数形式的多轴疲劳寿命预测模型（标准模型）以及基于高斯过程的最新模型（Karolczuk, A.; Słoński, M. 应用高斯过程进行多轴加载下的疲劳寿命预测。Mech. Syst. Signal Process. 2022, 167, 108599）。实验测试的完整描述可参考Kluger, K.; Karolczuk, A.; Derda, S. 在多轴和非零均值加载下应用寿命相关材料参数进行疲劳寿命预测。Materials (Basel). 2020, 13。