An accurate and efficient analysis method is critically needed for the damage tolerant design of bonded composite structures. In this proposal, sponsored by Boeing research and Technology, a technical approach to the disbond/delamination arrest problem has been presented. Major tasks to be accomplished during the six months period have been identified and discussed. These tasks include: development of analytical capability for the analysis of disbonds and delaminations as well as performing sensitivity studies on the effects of stacking sequence and the fastener dimensions and properties. Results of this research will contribute directly to the integrity and safety of aircraft structures made of bonded materials.