ABSTRACT
The aim of this Handbook is to illustrate the range of problems that have been tackled using moiré methods, in the hope that the sharing of experience will enrich the area as a whole, and will also serve as an introduction to the application of moiré in its diverse embodiments—mainly in strain analysis but with sections also on three-dimensional shape measurement. The form of the Handbook is a series of case studies of individual investigations, briefly discussed by one or more of the original authors who carried out the work. In each example, our intention has been to discuss the reasons behind the experimental design, the problems faced and the steps taken to overcome them. What the reader will find missing, however, is a detailed exposition of the theory of moiré and the intricacies of grating design and application. These topics have been described at length in specialist monographs [1,2], and in the Society for Experimental Mechanics Handbook on Experimental Mechanics [3]. The one exception to this rule is the detailed consideration given to the degree of information that may be extracted from moiré fringes. This section is an expansion of ideas first enunciated by McKelvie some time ago, and further elaborated in the intervening period. Moiré fringes may be magic in the colloquial sense but they are not magic in that they do not contain infinitely divisible information within their quasi-sinusoidal intensity profile.
