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 ...
Paul Croce Paris (August 7, 1930 - January 15, 2017) was an American academic, engineering consultant and researcher in the field of mechanics and fatigue.He was known particularly for introducing fracture mechanics methods to the aviation industry, and for the empirical Paris' law relating crack growth rate to the amplitude of the stress intensity factor.
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 ...
Alan Arnold Griffith CBE FRS [1] (13 June 1893 – 13 October 1963), was an English engineer and the son of Victorian science fiction writer George Griffith.Among many other contributions, he is best known for his work on stress and fracture in metals that is now known as metal fatigue, as well as being one of the first to develop a strong theoretical basis for the jet engine.
Microscopic material failure is defined in terms of crack initiation and propagation. Such methodologies are useful for gaining insight in the cracking of specimens and simple structures under well defined global load distributions. Microscopic failure considers the initiation and propagation of a crack.
A schematic depicting how a material's rising R-curve leads to added crack stability. Two different crack driving force curves are applied to the material, () and ().Even though both are initially unstable, due to their different slopes () will unstably propagate the crack while () will arrest the crack after propagating it a short distance .
The Faber–Evans model for crack deflection, [1] [2] is a fracture mechanics-based approach to predict the increase in toughness in two-phase ceramic materials due to crack deflection. [3] The effect is named after Katherine Faber and her mentor, Anthony G. Evans , who introduced the model in 1983. [ 4 ]