The influence of the size effect is investigated experimentally on unnotched 42CrMo4 + QT fatigue specimens of four configurations with different critical volumes. An investigation of external factors present during experiments is also carried out. The paper shows how complicated it is to analyze a single effect in fatigue experiments. The effects of uneven surface roughness, semi-product hardness across its cross-section or of residual stresses on the fatigue life of the specimens are discussed.

中文翻译：

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高周疲劳域中 42CrMo4 + QT 钢的尺寸效应研究第 I 部分：实验活动

在具有不同临界体积的四种配置的无缺口 42CrMo4 + QT 疲劳试样上，通过实验研究了尺寸效应的影响。还对实验期间存在的外部因素进行了调查。该论文显示了分析疲劳实验中的单一效应是多么复杂。讨论了不均匀的表面粗糙度、横截面的半成品硬度或残余应力对试样疲劳寿命的影响。