A Study on Ultrasonic Shear Horizontal Waves in Composite Structures

EasyChair Preprint no. 8976

Abstract

Composite materials, which are generally lighter, stronger and more durable than conventional materials, have been increasingly used in aerospace and automotive industries in recent decades. Ultrasonic guided waves have been proved to be an advanced technique for characterizing composite materials and structures since they can cover a large inspection area with a low attenuation effect. This paper discusses the motions of shear horizontal (SH) guided waves generated by a time-harmonic source in multilayered composite structures. We propose explicit expressions of SH waves in composite structures based on the transfer matrix method. The amplitudes of SH wave motions due to the time-harmonic loading are then theoretically derived using reciprocity theorems. Afterward, the phase and group velocity dispersion curves obtained by solving the characteristic equation are superimposed by quantitative amplitude spectra. The improved dispersion curves can enhance the wave mode and frequency selection in the ultrasonic evaluation of composite structures

Keyphrases: dispersion curve, Laminated composites, reciprocity theorem, Shear-horizontal waves

@Booklet{EasyChair:8976,
  author = {Duy Kien Dao and Ngoc Quy Hoang and Truonggiang Nguyen and Ductho Le and Hoai Nguyen and Haidang Phan},
  title = {A Study on Ultrasonic Shear Horizontal Waves in Composite Structures},
  howpublished = {EasyChair Preprint no. 8976},

  year = {EasyChair, 2022}}