While Araldite adhesives are extensively used in aerospace,maritime,and construction applications and have been well studied for their mechanical properties,their acoustic behavior remains largely unexplored.This stud...While Araldite adhesives are extensively used in aerospace,maritime,and construction applications and have been well studied for their mechanical properties,their acoustic behavior remains largely unexplored.This study investigates the sound absorption of 4 mm and 6 mm Araldite plates under undamaged and damaged conditions(circular,square,triangular damages).Measurements were performed using an ASTM E2611-09 impedance tube in the 100-1000 Hz and 1000-20000 Hz ranges,and results were validated with FEM simulations in COMSOL Multiphysics.Results show that damage has little to no effect on the sound absorption coefficient,with maximum values below 0.26.FEM predictions agreed well with experiments,achieving over 90%accuracy in the mid-frequency range.These findings indicate that Araldite plates’acoustic performance is largely insensitive to small geometrical damage,providing baseline data for marine and structural applications.展开更多
文摘While Araldite adhesives are extensively used in aerospace,maritime,and construction applications and have been well studied for their mechanical properties,their acoustic behavior remains largely unexplored.This study investigates the sound absorption of 4 mm and 6 mm Araldite plates under undamaged and damaged conditions(circular,square,triangular damages).Measurements were performed using an ASTM E2611-09 impedance tube in the 100-1000 Hz and 1000-20000 Hz ranges,and results were validated with FEM simulations in COMSOL Multiphysics.Results show that damage has little to no effect on the sound absorption coefficient,with maximum values below 0.26.FEM predictions agreed well with experiments,achieving over 90%accuracy in the mid-frequency range.These findings indicate that Araldite plates’acoustic performance is largely insensitive to small geometrical damage,providing baseline data for marine and structural applications.
