EPJ Web of Conferences 6, 32006 (2010)
https://doi.org/10.1051/epjconf/20100632006

Whole-field measurement of three-dimensional stress by scattered-light photoelasticity with unpolarized light

School of Science and Engineering, Kinki University, Higashi-Osaka 577-8502, Japan

^a e-mail: kihara@mech.kindai.ac.jp

Abstract

In digital scattered-light photoelasticity with unpolarized light (DSLPUL), secondary principal stress direction ψ_j and total relative phase retardation ρ_jtot in a three-dimensional stressed model with rotation of the principal stress axes are obtained by measuring Stokes parameters of scattered light from optical slices. The present paper describes intelligibly the principle of DSLPUL, and then demonstrates that the ψ_j and ρ_jtot in a frozen stress sphere model are nondestructively measured over the entire field.