IS 6886 : 2025 Dynamic Force Calibration of Axial Load Fatigue Testing Machines by Means of a Strain Gauge Technique - Method of Test
1 SCOPE
1.1 This standard provides guidance for the dynamic force calibration of fatigue testing machines including special attachments, such as, grips, which may affect the calibration of the machine. It deals exclusively with axial load machines in which test pieces, usually symmetrical about a longitudinal axis, are subjected to fluctuating and reversed forces along that axis (see IS 5074).
1.2 Whilst it is recognised that unsymmetrical specimens (components and structures), are sometimes tested, it is common practice to determine stresses within them from measurements by strain gauges applied to the test specimens as required, and in such cases dynamic force calibration of the machine may not be necessary.
1.3 The standard applies both to the calibration of new testing machines by the manufacturer and to the verification of machines in service. In the latter case, it may not be necessary apply all the procedures required for the overall calibration of a machine.
1.4 The calibration of special purpose machines and test rigs are not specifically covered in this standard but procedures similar to those described may be applied to suit particular applications.
2 REFERENCES
The standards given below contain provisions which, through references in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of these standards:
| IS No. | Title |
| IS 1828 (Part 1) : 2022/ISO 7500-1 : 2018 | Metallic materials - Calibration and verification of static uniaxial testing machines: Part 1 compression testing machines - Calibration and verification of the force-measuring system (fifth revision) |
| IS 5074 : 2023/ISO 1099 : 2020 | Metallic materials - Fatigue testing - Axial force-controlled method (first revision) |