title: Isochromatic fringes in photoelasticity.
abstract: The structure of the isochromatic fringe pattern in a two-dimensional photoelastic model is investigated with the phase diagram method of the theory of dynamic systems. Isochromatics are interpreted as phase paths (or level curves) of a Hamiltonian system. Possible singularities of the fringe pattern are analyzed.
authors.affiliation: Institute of Cybernetics, Tallinn Technical University, Estonia. aben@ioc.ee
authors.forename: H
authors.initials: H
authors.lastname: Aben
authors.forename: L
authors.initials: L
authors.lastname: Ainola
mesh_terms: D001718:Birefringence; D003116:Color; D004548:Elasticity; D007368:Interferometry / Q000379:methods; D008027:Light; D008962:Models, Theoretical