Bending,damping and fatigue of metals

It has been shown that the plastic strain at the outside fiber of a rectangular beam subjected to uniform bending is significantly greater than the measured permanent set. Damping tests have been evaluated in terms of known strain distribution and it has been shown that the results are compatible with experimental data. The elastic limit, which corresponds to the fatigue limit, has been estimated using the results of damping tests. An excellent correlation between the predicted values of the fatigue limit and some conventionally determined fatigue data has been obtained.