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REPAIR EFFICIENCY IN FATIGUE‐CRACKED ALUMINIUM COMPONENTS REINFORCED WITH BORON/EPOXY PATCHES
Author(s) -
Baker A. A.
Publication year - 1993
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1993.tb00117.x
Subject(s) - epoxy , aluminium , boron , materials science , composite material , fatigue testing , damage tolerance , structural engineering , metallurgy , composite number , engineering , chemistry , organic chemistry
This paper describes studies on fatigue crack propagation in cracked aluminium alloy (2024 T3) panels repaired with boron/epoxy patches, adhesively bonded with either an epoxy‐nitrile film adhesive or an acrylic adhesive. Studies were undertaken to assess the effect on patching efficiency of (a) disbonding of the patch system and (b) test temperature. A simple model is proposed for estimating the reduction of patching efficiency due to cyclic disbonding of the reinforcement. In the elevated‐temperature tests it was found, unexpectedly, that patching efficiency in panels patched using the film adhesive was unaffected by temperatures up to 100°C.