[PDF][PDF] Shear actuation of piezoelectric transducers embedded within laminate structures for damage detection
H Altammar, N Salowitz - Proceedings of the 7th Asia Pacific workshop on …, 2018 - ndt.net
Proceedings of the 7th Asia Pacific workshop on structural health monitoring …, 2018•ndt.net
Structural bonding is increasingly supplementing and replacing mechanical fasteners
because of the potential to reduce weight, part count, and assembly time in addition to the
reduction in stress concentrations and ability to bond complex geometries that are not
feasible with mechanical fasteners. Despite the advantages of structural bonding over
mechanical fasteners, structural bonding is challenging to inspect and introduces new
failure modes into structures. Significant work on techniques for inspection of bond-lines has …
because of the potential to reduce weight, part count, and assembly time in addition to the
reduction in stress concentrations and ability to bond complex geometries that are not
feasible with mechanical fasteners. Despite the advantages of structural bonding over
mechanical fasteners, structural bonding is challenging to inspect and introduces new
failure modes into structures. Significant work on techniques for inspection of bond-lines has …
Abstract
Structural bonding is increasingly supplementing and replacing mechanical fasteners because of the potential to reduce weight, part count, and assembly time in addition to the reduction in stress concentrations and ability to bond complex geometries that are not feasible with mechanical fasteners. Despite the advantages of structural bonding over mechanical fasteners, structural bonding is challenging to inspect and introduces new failure modes into structures.
Significant work on techniques for inspection of bond-lines has been performed. Ultrasonic techniques using externally mounted actuators and sensors have consistently found that shear waves and antisymmetric guided waves were the most sensitive to flaws in bond-lines. Recent work has also focused on using resonant frequencies and electromechanical impedance methods with internally embedded transducers to inspect bond-lines for damage.
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