Abstract
A patched crack with a debonded region is treated with a crack-bridging model: assuming continuous distribution of springs acting between crack surfaces. Adopting weight function method, the stress intensity factor for the patched crack within infinite plate is successfully obtained by numerical calculation. As the crack length a increases, the restraint on the relative displacement of the crack faces for a given value σ 0 is increased. The constant relative displacement (or crack surface displacement) did explain the reason for the constant stress intensity factors being independent of the crack length. A simple asymptotic solution was proposed for estimating the reduction of patching efficiency due to debonding and compared with numerical solution obtained by weight function method.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
