TY - JOUR
T1 - Wave interaction with nonlinear damage and generation of harmonics in composite structures
AU - Apalowo, R. K.
AU - Chronopoulos, D.
AU - Cantero-Chinchilla, S.
PY - 2019/12/15
Y1 - 2019/12/15
N2 - This work presents a generic Finite Element (FE) based computational scheme for quantifying guided wave interaction with Localised Nonlinear Structural Damage (LNSD) within structures of arbitrary layering and geometric complexity. The through-thickness mode-shape of the structure is obtained through a wave and finite element method. This is applied in a time domain FE simulation in order to generate time harmonic excitation for a specific wave mode. Interaction of the wave with LNSD within the system is computed through an element activation and deactivation iteration. The scheme is validated against experimental measurements and a WFE-FE methodology for calculating wave interaction with damage. Case studies for guided wave interaction with crack and delamination are presented to exhibit the robustness of the proposed method in classifying and identifying damage.
AB - This work presents a generic Finite Element (FE) based computational scheme for quantifying guided wave interaction with Localised Nonlinear Structural Damage (LNSD) within structures of arbitrary layering and geometric complexity. The through-thickness mode-shape of the structure is obtained through a wave and finite element method. This is applied in a time domain FE simulation in order to generate time harmonic excitation for a specific wave mode. Interaction of the wave with LNSD within the system is computed through an element activation and deactivation iteration. The scheme is validated against experimental measurements and a WFE-FE methodology for calculating wave interaction with damage. Case studies for guided wave interaction with crack and delamination are presented to exhibit the robustness of the proposed method in classifying and identifying damage.
KW - Composite structures
KW - Finite element modelling
KW - Nonlinear ultrasound
KW - Wave finite element method
KW - Wave interaction with nonlinear damage
UR - http://www.scopus.com/inward/record.url?scp=85072866833&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2019.111495
DO - 10.1016/j.compstruct.2019.111495
M3 - Article (Academic Journal)
AN - SCOPUS:85072866833
SN - 0263-8223
VL - 230
JO - Composite Structures
JF - Composite Structures
M1 - 111495
ER -