A numerical and experimental study of crack tip shielding in presence of overloads

2010 ◽  
Vol 77 (11) ◽  
pp. 1644-1655 ◽  
Author(s):  
C. Colombo ◽  
L. Vergani
Keyword(s):  
Experimental Study ◽  
Crack Tip ◽  
Crack Tip Shielding

Multiscale simulation of crack tip shielding by a dislocation

2008 ◽  
Vol 56 (11) ◽  
pp. 2441-2449 ◽  
Author(s):  
D. Tanguy ◽  
M. Razafindrazaka ◽  
D. Delafosse
Keyword(s):  
Crack Tip ◽  
Multiscale Simulation ◽  
Crack Tip Shielding

Complete Crack-Tip Shielding of the Mode III Crack in a Work-Hardening Solid

1991 ◽  
Vol 58 (4) ◽  
pp. 1107-1108 ◽  
Author(s):  
J. Weertman
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Work Hardening ◽  
Crack Tip ◽  
Mode Iii ◽  
Mode Iii Crack ◽  
Extension Force ◽  
Crack Tip Shielding ◽  
Dislocation Crack

The crack-tip shielding stress intensity factor L, for the mode III crack in a work-hardening solid is equal to L = - K, where K is the applied stress intensity factor. That is, the crack tip is perfectly shielded. This result is shown two ways: from the dislocation shielding and from the dislocation crack extension force.

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