Pinit P, Umezaki E. Determination of 2D Directional Field of Three-point Bending Beam with Three-stepped Data in Digital Photoelasticity. Sci Tech Asia [Internet]. 2014 Jan. 24 [cited 2024 May 3];14(1):34-42. Available from: https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/15864