Search results
Results from the WOW.Com Content Network
Fracture mechanics is the field of mechanics concerned with the study of the propagation of cracks in materials. It uses methods of analytical solid mechanics to calculate the driving force on a crack and those of experimental solid mechanics to characterize the material's resistance to fracture.
A crack growth equation is used for calculating the size of a fatigue crack growing from cyclic loads. The growth of a fatigue crack can result in catastrophic failure, particularly in the case of aircraft. When many growing fatigue cracks interact with one another it is known as widespread fatigue damage. A crack growth equation can be used to ...
Intergranular fracture produced by crack propagation along grain boundaries. Embrittlement, or loss of ductility, is often accompanied by a change in fracture mode from transgranular to intergranular fracture. [4] This transition is particularly significant in the mechanism of impurity-atom embrittlement. [4]
In a 1961 paper, P. C. Paris introduced the idea that the rate of crack growth may depend on the stress intensity factor. [4] Then in their 1963 paper, Paris and Erdogan indirectly suggested the equation with the aside remark "The authors are hesitant but cannot resist the temptation to draw the straight line slope 1/4 through the data" after reviewing data on a log-log plot of crack growth ...
Crack propagation: Once the crack has initiated, it may spread throughout the material as a result of stress concentrations and other factors. Plastic deformation: As the crack propagates, the material near the crack undergoes significant plastic deformation due to the local stress concentration.
In materials science, fracture toughness is the critical stress intensity factor of a sharp crack where propagation of the crack suddenly becomes rapid and unlimited. A component's thickness affects the constraint conditions at the tip of a crack with thin components having plane stress conditions and thick components having plane strain ...
Crack Grapes courtesy of Erika Kuiper (AKA @cookiterica) Ingredients. Jolly Rancher hard candies, unwrapped and sorted by color. Grapes and strawberries, washed and dried well. Pop Rocks candy.
This page was last edited on 8 October 2008, at 15:12 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...