GB/T 3075-2021 Metallic materials—Fatigue testing—Axial force-controlled method
GB/T 3075-2021 Metallic materials—Fatigue testing—Axial force-controlled method
Basic Information
Scope
This document specifies the conditions for axial constant amplitude fatigue tests on metal material specimens at room temperature (without introducing stress concentration). When using this document, the purpose of the test is to provide fatigue information, such as the relationship between the applied stress and the number of failure cycles under different stress ratios and given material conditions (such as hardness and microstructure).
This document is applicable to axial constant amplitude fatigue tests on circular and rectangular cross-section specimens. The testing of product components and other special-shaped specimens is not included.
Note 1: Since the shape and size of notched specimens are not standardized, this document does not include fatigue tests on notched specimens. However, the fatigue test process described in this document can be applied to fatigue tests on notched specimens.
Note 2: This document uses engineering stress, which is defined as the ratio of axial force to the original cross-sectional area of the specimen at the test temperature.