Abstract :
Researchers in the field of fracture mechanics, predominantly developing
appropriate solution algorithms for problems of solid bodies with cracks.
Problems in mechanics generally, related with fracture and fatigue for solid
bodies with various geometries of sharp notches, are studied to a much
lesser extent. This situation can be explained by analytical difficulties arising
in solving problems of elasticity theory for bodies with rounded notches. To
solve problems of such class, starting from data on stress concentration in
the rounded notch tip with a significant radius of curvature, simplified
solutions with are therefore of great importance. Recent years, due to
constant rise of computing power and development of numerical methods,
re-evaluation of stress concentration factors from a viewpoint of theory of
elasticity is present. This is mainly as a feedback from industry, which have
requirements toward mega and nanostructures.
Corrosion represents an important limitation to the safe and reliable use of
many alloys in various industries. Pitting corrosion is a form of serious
damage on metals surface such as high-strength aluminum alloys and
stainless steel, which are susceptible to pitting when exposed to a corrosive
attack in aggressive environments. This is particularly valid for dynamic
loaded structures.
The basic idea behind this paper is finding links between different scientific
and engineering disciplines, which will enable useful level of applicability of
existing knowledge. The subject of this paper is application of new method
of determine length scale parameter for estimating the mechanistic aspect
of corrosion pit under uniaxial/multiaxial high-cycle fatigue loading…
Keyword :
stress concentration, fatigue, multiaxial fatigue, corrosion pit, critical distance.