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Effect of interactions of two holes on tensile behavior of patch repaired carbon/epoxy woven laminates

Defence Technology（防务技术） 2023年第3期21卷 88-93页

作者： gursahib singh bhatia Arockiarajan A. Department of Applied Mechanics Indian Institute of Technology Madras600036ChennaiIndia

The conventional case of patch repair involves bonding a patch over single damage/hole in the *** work investigates the effect of interaction of two holes on the tensile behavior patch repaired carbon epoxy woven *** specimens of[0°/45°/45°/0°]laminates were repaired with adhesively bonded two-ply[45°]2external *** different cases of drilled specimens were produced with different hole arrangements *** with single central hole(SH),with two holes aligned along the longitudinal axis(LH)and with two holes along transverse axis(TH).The two-hole specimens were repaired with two different types,*** large patches(SP)and with the two smaller patches(DP)of combined bonding area equal to the single large *** image correlation(DIC)was employed to capture strain *** results reveal the difference in the load transfer through the patches depending upon the arrangement of *** TH repaired specimen exhibit significant load recovery(SP-32.75%,DP-34.62%)while the LH specimens result in very marginal(SP-6.11%,DP-4.10%)recovery compared to their drilled *** TH specimen failed by crack growing through both the holes beneath the patch,while the LH specimens failed by the failure through only one *** use of single large patch over multiple holes and multiple small patches individually over each hole has no significant influence on load recovery.

关键词： crack patch behavior

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