Sep 15, 2021 · Results showed that pit shape significantly affects the tensile properties of pitted plates by impacting stress distribution in locally pitted areas. Especially, the effect of pit shape on tensile properties is mainly dependent on the ratio (d/h) of pit diameter to pit depth.

Pitting corrosion occurs when discrete areas of a material undergo rapid attack while most of the adjacent surface remains virtually unaffected. The following are common pit shapes divided in two groups: Trough Pits. Narrow, deep. Shallow, wide. Elliptical. Vertical grain attack. Sideway Pits. Subsurface. Undercutting. Horizontal grain attack

Pitting corrosion, which, for example, is almost a common denominator of all types of localized corrosion attack, may assume different shapes. Pitting corrosion can produce pits with their mouth open (uncovered) or covered with a semi-permeable membrane of corrosion products.

Sep 15, 2021 · Numerical results showed high consistencies with available tests of ultimate strength of pitted plates. The pit shape significantly affects the ultimate strength of pitted structures, likely causing a strength variation more than 20% in a naturally pitted hull plate.

Oct 7, 2024 · Unlike uniform corrosion, which affects larger areas more predictably, pitting targets small, concentrated spots on a metal’s surface, leading to the formation of cavities or “pits” that can penetrate deeply into the material.

The shape of pitting corrosion can only be identified through metallography where a pitted sample is cross-sectioned and the pit shape, the pit size, and the pit depth of penetration can be determined.

Dec 1, 2017 · Measures of tortuosity has greater sensitivity to local evolving pit shapes. This work presents an innovative framework for the simulation of stable pit growth that accounts for the material microstructure in the computational model to investigate its effect on pit growth behavior.

Pitting corrosion, which, for example, is almost a common denominator of all types of localized corrosion attack, may assume different shapes. Pitting corrosion can produce pits with their mouth open (uncovered) or covered with a semi-permeable membrane of corrosion products.

In this paper, a framework for corrosion pit growth simulation based on the coupling of the Cellular Automaton (CA) and Boundary Element Methods (BEM) is presented. The fram... ... can take...

Pitting corrosion is a localized form of corrosion by which cavities or "holes" are produced in the material. Pitting is considered to be more dangerous than uniform corrosion damage because it is more difficult to detect, predict and design against. Corrosion products often cover the pits.