Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
A NUMERICAL STUDY ON THE EFFECT OF PLY ORIENTATION IN LAMB WAVE PROPAGATION THROUGH CARBON FIBER REINFORCED COMPOSITES
Submission Author:
Luis Eduardo Jaramillo Bustamante , SP
Co-Authors:
Humberto Brito, Volnei Tita, Marcelo Leite Ribeiro, Luis Eduardo Jaramillo Bustamante
Presenter: Luis Eduardo Jaramillo Bustamante
doi://10.26678/ABCM.COBEM2017.COB17-1543
Abstract
Lamb waves (LW) have been extensively proposed for long range inspection in composite structures oriented to Structural Health Monitoring (SHM). However, their propagation results complex to signal processing by their highly dispersive behavior. Better understanding of its propagation in composites is key to develop reliable damage detection strategies. LW propagation through a carbon fiber composite plate is simulated in Fem software Abaqus and its results are used to assess the effect of ply orientation on LW response. Stackings of [0]8, [0/30]2S, [0/60]2S and [0/90]2S excited with a Shear Vertical wave input at 50kHz were used. The propagation was sensed with equally spaced circular arrays of nodes; analogous to what would be an array of bonded piezo actuators/sensors of infinitely small radius. An analysis of numeric parameters setup was made. Signals comparisons and propagation speed distributions allowed to identify key features of the physical propagation phenomena despite of the simplifications made.
Keywords
Composite Materials, Lamb Wave (LW), wave propagation, Numerical simulation, Ply orientation
