Stress and strain fields analysis by method ESPI with use of fixture for shear examination Arcan

Abstract

This article describes the possibilities of utilizing of ESPI - Electronic Speckle Pattern Interferometry for system Q-100 application for strain and stress analysis on surface of flat specimens predominantly loaded by shear deformation. The fixture standardly used for shear tests – Arcan test was designated for such stress state excitation. Tested specimens were made with respect to their geometry by water ray from two materials - dural and stainless steel. There were determined stress fields in elastic area from measured strain fields which were consequently verified by finite element method.