ISO 1352:2021 PDF

Scope: This document specifies the conditions for performing torsional, constant-amplitude, nominally elastic stress fatigue tests on metallic specimens without deliberately introducing stress concentrations. The tests are typically carried out at ambient temperature or an elevated temperature in air by applying a pure couple to the specimen about its longitudinal axis. While the form, preparation and testing of specimens of circular cross-section and tubular cross-section are described in this document, component and other specialized types of testing are not included. Similarly, low-cycle torsional fatigue tests carried out under constant-amplitude angular displacement control, which lead to failure in a few thousand cycles, are also excluded.

ISO 1352:2021 Referenced Document

ISO 23788 Metallic materials - Verification of the alignment of fatigue testing machines
ISO 554:1976 Standard atmospheres for conditioning and/or testing; Specifications