ABSTRACT

ABSTRACT Neural networks (NN) found its application in fatigue field, especially in fatigue life assessment of composite materials in recent years. The use of NN in the field of application also implies the necessity for optimizing the NN prediction of the composite fatigue life with respect to the presence of limited fatigue data available and fatigue condition of varying

CONTENTS

9.1 Introduction ................................................................................................222 9.1.1 Review on Fatigue Life Assessment of Composite

Materials Using NN .......................................................................223 9.1.2 Motivation and Objective ............................................................. 224

9.2 Fatigue Life Assessment Under Variable Amplitude Loading ............225 9.3 NN Design .................................................................................................. 226

9.3.1 Optimization and Gradient-Based Learning Methods .............228 9.3.2 Bayesian Regularization ...............................................................230