سال انتشار: ۱۳۸۶

محل انتشار: پانزدهمین کنفرانس سالانه مهندسی مکانیک

تعداد صفحات: ۶

نویسنده(ها):

Hosseini-Toudeshky – Associate Professor Amirkabir University of Technology Aerospace-Department
Saber – Post Graduate student Amirkabir University of Technology Aerospace-Department
Mohammadi – Post Graduate student Amirkabir University of Technology Aerospace-Department

چکیده:

In this paper, finite element fatigue crack growth rate of thin aluminium panels containing a central inclined crack of 45o with single-side glass/epoxy patch are performed considering the general mixed-mode conditions (modes I, II and III). These panels are repaired with the 4 layers
glass/epoxy composite materials with the lay-up configurations of [90]4, [105]4, [-45]4, [-45/+45]2, and [902/02]. Effects of patch lay-up configuration on the restarting crack growth (crack re-initiation) life and crack growth rate of the repaired panels are investigated. Also the effects of patch lay-up configurations on the crack trajectories at patched and un-patched surfaces of the repaired panels are investigated. Resultsshown that, using the patch lay-up configurations of [90]4 and [902/02] are more efficient than the patch lay-ups perpendicular to the initial inclined crack in term of crack growth life extension.