The fatigue response of additive manufactured (AMed) components is generally controlled by the defect population, and the models for assessing the fatigue response of AMed parts have to take into account the distribution of defect size and the intrinsic scatter associated to the fatigue response. In the present paper, a statistical methodology for analyzing the results of tests on AMed specimens failed due to cracks originating from defects is proposed. The procedure involves the estimation of the distribution of the fatigue life, which is considered dependent on the applied stress amplitude and on the defect size. Thereafter, all the experimental failures are shifted at a reference number of cycles to failure or stress amplitude, making it possible to compare data obtained at different stress levels or number of cycles to failure. The proposed method has been successfully validated on literature dataset, proving its effectiveness and general validity.

中文翻译：

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增材制造部件缺陷引起的疲劳失效：一种用于分析实验结果的统计方法

增材制造 (AMed) 部件的疲劳响应通常由缺陷群控制，用于评估 AMed 部件疲劳响应的模型必须考虑缺陷尺寸的分布以及与疲劳响应相关的内在散射。在本文中，提出了一种统计方法，用于分析因缺陷产生的裂纹而失败的 AMed 试样的测试结果。该程序涉及疲劳寿命分布的估计，这被认为取决于施加的应力幅度和缺陷尺寸。此后，所有实验失效都以参考失效循环数或应力幅度进行转移，从而可以比较在不同应力水平或失效循环数下获得的数据。