The

stress ratio is defined as [delta] = [sigma]/[[sigma].

The fatigue tests of notched specimens were carried out at R = -1 and the fatigue tests of smooth specimens were carried out at three different values of

stress ratio R(R = -1, 0.

A numerical analysis of reinforced concrete columns subjected to high-cycle fatigue loading has shown that the resistant number of cycles, next to well established parameters such as maximum stress level,

stress ratio and loading frequency, is greatly affected by reinforcement ratio.

S] is a function of the shear

stress ratio [[theta].

Embedded in the seismic utilities module, these tools calculate volumes of properties such as Young s Modulus, Brittleness and Closure

Stress Ratio from pre-stack inversion results.

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.

The results are presented here in terms of the number of load cycles to liquefaction in response to the cyclic

stress ratio (CSR).

The FCGR in Region 2 is governed mainly by crack tip stress intensity levels, but can be affected by testing variables such as

stress ratio (R = [K.

Further fatigue tests are planed with a

stress ratio of R = -1.

The total indenting load of 500 N (mean compressive load of 275 N, alternating load of 225 N),

stress ratio of 0.

Results of

stress ratio analyses suggested that the ratio of material modulus of rupture (MOR) to the fatigue stress level required to be achieved for design of upholstered furniture frame members considering stepped fatigue effects could be set to 1.

L] = number of loading cycles required to produce initial liquefaction corresponding to the cyclic

stress ratio, CSR (=cyclic stress required to initiate liquefaction / vertical effective stress in soil) and [theta] = constant representing soil properties and test condition (commonly, [theta]=0.