An overview of the use of full-field measurement techniques for composite material and structure characterization reported in the recent literature is presented in this paper. The features of the main types of measurement techniques are first briefly described. Specific advantages of using these techniques in a context of composite material characterization are then highlighted. Critical issues that require further research and development are finally examined.

The use of full-field measurement methods in composite material characterization: interest and limitations

http://arrow.utias.utoronto.ca/~csteeves/papers/IJMSPtI-Apr-2004.pdf

Collapse mechanisms of sandwich beams with composite faces and a foam core, loaded in three-point bending. Part I: analytical models and minimum weight design

Recent advances in engineering design optimisation: Challenges and future trends

The overall performance of sandwich structures depends in general on the properties of the facesheets, the core, the adhesive bonding the core to the skins, as well as geometrical dimensions. Sandwich beams under general bending, shear and in-plane loading display various failure modes. Their initiation, propagation and interaction depend on the constituent material properties, geometry, and type of loading. Failure modes and their initiation can be predicted by conducting a thorough stress analysis and applying appropriate failure criteria in the critical regions of the beam. This analysis is difficult because of the nonlinear and inelastic behavior of the constituent materials and the complex interactions of failure modes. Possible failure modes include tensile or compressive failure of the facesheets, debonding at the core/facesheet interface, indentation failure under localized loading, core failure, wrinkling of the compression facesheet, and global buckling.

/pdf/failure-modes-of-composite-sandwich-beams-53s7a22ayu.pdf

F.M. Shuaeib

Papers

Indentation failure of composite sandwich beams

A new motorcycle helmet liner material: The finite element simulation and design of experiment optimization

Motorcycle Helmet Part I. Biomechanics and Computational Issues.

Motorcycle helmet: Part II. Materials and design issues

Motorcycle helmet: Part III. Manufacturing issues