Thick Composite Beam Model for Delamination Prediction Using Neural Networks

Author

Manish Thankappan Valoor
K. Chandrashekhara, Missouri University of Science and TechnologyFollow

Abstract

Delamination in composite structures is of interest because it can cause catastrophic failure. A consequence of delamination is the change in stiffness of the structure. This effects the modal frequencies of the structure. The applicability of neural networks in determining delaminations in laminated composite beams is examined. A composite beam model based on a shear deformation theory is developed to predict the natural frequencies. The beam model developed is applicable to various boundary conditions. A back propagation neural network is trained to predict the delamination size and location from the natural frequencies of the beam. The neural network model is found to be quite successful in determining the delamination size and location.

Recommended Citation

M. T. Valoor and K. Chandrashekhara, "Thick Composite Beam Model for Delamination Prediction Using Neural Networks," Intelligent Engineering Systems Through Artificial Neural Networks, American Society of Mechanical Engineers (ASME), Jan 1997.

Meeting Name

1997 Artificial Neural Networks in Engineering Conference

Department(s)

Mechanical and Aerospace Engineering

Keywords and Phrases

Backpropogation; Composite Beams and Girders; Composite Structures; Delamination; Mathematical Models; Shear Deformation; Stiffness

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1997 American Society of Mechanical Engineers (ASME), All rights reserved.

Publication Date

01 Jan 1997