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.本数据集包含循环加载下施加的名义应力幅值与均值，以及以试样刚度下降20%为失效判定标准的失效循环周次。本数据集采用沙漏形试样，开展了循环单轴平面弯曲、扭转及其同相组合加载试验。本次数据采集旨在验证两类多轴疲劳寿命预测模型：一类为参数形式的标准模型，另一类为近期提出的基于高斯过程（Gaussian process）的疲劳寿命预测模型（引用文献：Karolczuk, A.; Słoński, M. Application of the Gaussian process for fatigue life prediction under multiaxial loading. Mech. Syst. Signal Process. 2022, 167, 108599）。完整的试验测试细节可参见文献：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.