Header menu link for other important links
X
Longitudinal guided waves confined in radius filler regions of composite joints
Published in Acoustical Society of America
2016
Volume: 140
   
Issue: 1
Pages: 334 - 343
Abstract
This paper studies the feasibility of using ultrasonic guided waves for fast inspection of conformal deltoid radius filler or "Noodle" regions of joints in stringer composite structures. Semi-analytical finite element simulations, supported by experiments and three-dimensional finite element models, are used to demonstrate the existence of a longitudinal guided ultrasonic mode confined or trapped in the Noodle regions. Studies reveal that this mode has attractive properties for rapid screening of Noodle joints, including strong energy concentration, low dispersion, and attenuation. Discussing the physics of mode confinement in light of material differences and geometry, the phenomenon is shown to be related to feature-guiding effects noted in literature recently. © 2016 Acoustical Society of America.
About the journal
JournalJournal of the Acoustical Society of America
PublisherAcoustical Society of America
ISSN00014966
Open AccessNo
Concepts (13)
  •  related image
    Fillers
  •  related image
    Guided electromagnetic wave propagation
  •  related image
    STRINGERS
  •  related image
    Ultrasonic applications
  •  related image
    COMPOSITE JOINT
  •  related image
    ENERGY CONCENTRATION
  •  related image
    GUIDING EFFECT
  •  related image
    LOW DISPERSIONS
  •  related image
    RAPID SCREENING
  •  related image
    SEMI-ANALYTICAL FINITE ELEMENT
  •  related image
    Three dimensional finite element model
  •  related image
    Ultrasonic guided wave
  •  related image
    Finite element method