本文件规定了金属材料旋转杆弯曲疲劳试验的方法。试验在室温或高温空气中进行，试样旋转。 本文件不包括缺口试样的疲劳试验，因为缺口试样的形状和尺寸尚未标准化。然而，本文件中描述的疲劳试验程序可适用于缺口试样的疲劳试验。

This document specifies the method for rotating bar bending fatigue testing of metallic materials. The tests are conducted at room temperature or elevated temperature in air, the specimen being rotated. Fatigue tests on notched specimens are not covered by this document, since the shape and size of notched specimens have not been standardized. However, fatigue test procedures described in this document can be applied to fatigue tests of notched specimens.