This document describes the general principles of multiaxial fatigue testing and establishes design criteria for specific categories of multiaxial fatigue testing specimens. This document applies to multiaxial tension-torsion fatigue tests, axial tension (compression) torsional fatigue tests under internal and external pressure, and biaxial tension or compression fatigue tests.
GB/Z 40387-2021 Referenced Document
GB/T 12160 Metallic materials-Calibration of extensometers systems used in uniaxial testing
GB/T 12160-2019 Metallic materials-Calibration of extensometers systems used in uniaxial testing