Related Experiment Video
Updated: May 30, 2025

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
Published on: May 23, 2017
Moiré effect in combined planar and curved objects
Abstract:
We consider the moiré effect in combined objects consisting of parts of dissimilar curvature (such as a flat facet combined with a cylinder). The formula for the period in the combined objects with the center of the cylinder on the axis of the camera is obtained. Compared to objects with parts of similar curvature (two planar surfaces or two halves of a cylinder), the moiré patterns in the combined objects are diverse: particularly, the period of the moiré patterns can have up to two maxima across the surface of the cylinder. Experiments with the camera on the coordinate axis confirm the theory. An overall picture of the patterns is given in the parameter space. The results can be applied to nanoparticles and measurements.
Related Concept Videos
Mohr's Circle for Plane Strain
Mohr's circle visually represents the strain states under various conditions, which is essential for...
Bending of Curved Members - Neutral Surface
Consider the curved member described in the previous lesson. According to Hooke's law, which relates stress to strain within...
Mohr's Circle for Plane Stress
Consider a set of Cartesian coordinates. The horizontal and vertical axes correspond to normal stress (σ) and shearing stress (τ), respectively. Two points, points A and B, are defined by the normal and shear...
Gauss's Law: Planar Symmetry
Stress on an Oblique Plane
Plastic Deformations of Members with a Single Plane of Symmetry

