Experimental research of powder composites fatigue on the basis of technically pure iron

Describes the methods of experimental investigations of powdered porous materials based on macroisotropic compacted technically pure iron. Tests of samples of powder composites fatigue carried out both in terms of "simple" types of loading (bending at the hard and soft loading, torsion) and a combination of the same process two "simple" form (bending with torsion, tension with torsion). Methodology implemented in relation to a class of materials for several years, based on fundamentally different material base - testing machines. The paper also provides methods for analysis of stress-strain state in the samples, carried out statistical analysis of test results, the curves of equal probability of fatigue. Paper gives a brief analysis by comparing the results of tests carried out in different conditions.