Geometric Moiré

Abstract

Our goal in this chapter is to review the fundamental concepts of geometric moiré that are usually addressed in the study of optical methods of experimental mechanics and engineering practice. Moiré methods can measure the in-plane and out-of-plane components of displacement. Herein emphasis is placed on the measurement of deformations that occur when a body is subjected to applied forces or temperature changes. An additional goal is to build a foundation for easy assimilation of the concepts of high-sensitivity moiré interferometry presented in the next chapter. Much of this chapter is excerpted from [21.1,2] with the kind permission of Springer Science and Business Media, and from [21.3].