Abstract

The strain in thin flexible membranes representing human skin has been studied using moiré interferometry. A method of using a flexible coating of photographic emulsion was developed. The equations for use in differential interferometry were also derived for very large deformations. The method was applied to two types of cases: rectangular membranes subjected to a uniform axial strain, and membranes containing strain concentrators that represent bandages placed on the surface of the skin. Results for the former case were within 3% of exact results, while results near the concentrator indicate strain concentration factors ranging from −1.25 to 1.75.

© 1979 Optical Society of America

Moiré interferometry

S. Yokozeki and S. Mihara
Appl. Opt. 18(8) 1275-1280 (1979)

Moiré interferometry with white light

Daniel Post
Appl. Opt. 18(24) 4163-4167 (1979)

In-plane displacement and strain measurement by speckle interferometry and moire derivation

Michael Spajer, Pramod K. Rastogi, and Jacques Monneret
Appl. Opt. 20(19) 3392-3402 (1981)

Strain analysis by one-beam laser speckle interferometry. 2: Multiaperture method

F. D. Chiang and R. P. Khetan
Appl. Opt. 18(13) 2175-2186 (1979)

Instantaneous frequency and its application to strain extraction in moire interferometry

Qian Kemao, Seah Hock Soon, and Anand Asundi
Appl. Opt. 42(32) 6504-6513 (2003)