Lamb-Like Wave Mode Selection Algorithm for Multilayer Plate Nde

Kannajosyula, H.; Lissenden, Cliff J.

doi:10.1063/1.3591856

Cited by 1 publication

(1 citation statement)

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“…The effect of adhesive bond geometry, material properties, and the presence of a defect on the transmission coefficients of guided wave modes was studied. Kannajosyula and colleagues 18,19 studied the interface wave in an isotropic adhesive layer embedded between two half spaces or two plates with finite thickness. Puthillath and Rose 20 proposed a method of mode selection for the inspection of a titanium repair patch bonded to an aluminum aircraft skin.…”

Section: Introductionmentioning

confidence: 99%

Modal content-based damage indicators for disbonds in adhesively bonded composite structures

Ren

Lissenden

2016

Structural Health Monitoring

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Adhesive bonding is a promising joining method for composite materials. This article focuses on the use of modal content-based damage indicators to improve the sensitivity of guided waves to disbonds in the adhesive. Wave-defect interaction is modeled using frequency-domain finite element analysis in order to identify modes sensitive to adhesive degradation in joints between carbon fiber-reinforced polymer laminates. Phased array transducers and multielement array sensors designed for structural health monitoring are employed to enable preferential mode excitation and modal content extraction, respectively. The domains in dispersion curve space predicted to have good, intermediate, and no sensitivity to disbond were experimentally found to have good, intermediate, and limited sensitivity using a feature of the received signals associated with the modal amplitude or a modal amplitude ratio. Furthermore, the modal amplitude was found to decrease monotonically with increasing disbond size, demonstrating that it has potential to quantitatively size disbonds.

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Section: Introductionmentioning

confidence: 99%