This part of BS 7935 describes two methods (see Introduction) for determining the relationship between the true dynamic force range applied to a test-piece in a uniaxial sinusoidal constant-amplitude test and the force range indicated by the testing system.
These methods are applicable to servo controlled testing systems operating outside system resonant frequencies and are relevant to testing systems where the inertia force is unknown or where it is expected to exceed 1.0 % of the true force range.
NOTE Annex A gives guidance on when the system should be re-calibrated by methods described in this standard.
BS 7935-1:2004 history
2012BS ISO 4965-1:2012 Metallic materials. Dynamic force calibration for uniaxial fatigue testing. Testing systems
2004BS 7935-1:2004 Constant amplitude dynamic force calibration - Calibration and verification of non-resonant uniaxial dynamic testing systems - Method