Determination of Critical Size of Corrosion Pit on Mechanical Elements in Hydro Power Plants

Abstract

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… ARTICLE HISTORY

Corrosion Simulation of Automotive Materials Under Exposure in Biodiesel

“…Corrosion is an undesirable phenomenon that affects the durability of materials and is caused by an electrochemical interaction between metals with their environment. This process arises from prolonged exposure to hostile environmental conditions, impacting the reliability and safety of various alloys (Mitrović et al, 2018). In everyday life, corrosion represents a common form of surface degradation that affects metallic structures negatively and employs a considerable economic impact.…”