This paper focuses on the fatigue life calculation for an unalloyed medium carbon steel SAE1045 (German DIN‐standard: C45E), by applying an energy dissipation‐based approach quantified through thermographic measurements. The purpose of this approach is to establish an intrinsic dissipation model and to predict characteristics derived from the cyclic deformation behavior of stress‐controlled fatigue tests, eg, the fatigue limit and the S‐N data by using simplified (zero‐dimensional, 0D) thermodynamic equations. In order to investigate the possibilities for a rapid evaluation while simultaneously reducing the experimental effort, one load increase test (LIT) and two constant amplitude tests (CATs) were carried out. The S‐N data evaluated on such a basis is competitive to conventionally determined S‐N data as will be shown.

中文翻译：

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高周疲劳短期评估程序中的热成像技术应用于中碳钢

本文通过采用基于热耗散测量的基于能量耗散的方法，重点研究了非合金中碳钢SAE1045（德国DIN标准：C45E）的疲劳寿命计算。该方法的目的是建立固有的耗散模型，并通过使用简化的（零维，0D）预测从应力控制疲劳测试的循环变形行为得出的特性，例如疲劳极限和SN数据。热力学方程。为了研究在减少实验工作量的同时进行快速评估的可能性，进行了一项负载增加测试（LIT）和两项恒定幅度测试（CAT）。在这种基础上评估的S-N数据要比传统确定的S-N数据更具竞争力，如下所示。