13] investigated the uniaxial ratcheting behavior of polytetrafluoroethylene (PTFE) with different loading rate, mean stress and stress amplitude
at ambient and elevated temperatures, respectively.
a] is the stress amplitude
during one loading cycle.
The samples tested at the stress amplitude
of 85 MPa and stress ratio R = -1 had coarse unmodified microstructures and large silicon and iron-rich particles.
a](N)) is the deterioration produced by fatigue preloading with stress amplitude
Objective of the optimization task was to minimize the mass of the connecting rod under the effect of a load range comprising the two extreme loads, the peak compressive gas load, such that the maximum, minimum, and the equivalent stress amplitude
are within the limits of the allowable stresses.
The increase of power consumption is due to an increase of the strain and stress amplitude
causing the degradation of the material.
Component testing results showed the forged steel steering knuckle to have about two orders of magnitude longer life than the cast aluminum steering knuckle, for the same stress amplitude
The stress amplitude
or nominal stress is commonly plotted versus the number of cycles to failure in metals.
Standard S-N curves for both load and stress amplitude
are obtained from the test data.
Relationships between the stabilized surface temperature rise and either the frequency or stress amplitude
The results of the fatigue tests are referred in the form of S--N diagrams, which represents the stress amplitude
Effect of abnormal reduction of critical stress amplitude
[gamma]", determined the begining of microplastic flow, was esteblished in investigation of influence of negligible share of zinc impurity on amplitude dependence of aluminium internal friction .