DIC Course Data processing 2

Data processing 2: Experimental speckle images (duration : 4h00)

Objectives

• Process experimental images of disc in compression and tensile specimen: determine subset size, step and strain window size
• Work out displacement map for two static images of the dogbone specimen, plot obtained strain standard deviation as a function of subset size.
• Estimate artificial out-of-plane strain fields by processing the translated images, plot obtained strain standard deviation as a function of strain window size.
• Compare with simulated images results and exact (closed-form) solutions for the disc
• Extract Young’s modulus, Poisson coefficient and yield stress for dogbone

Competencies

• Participants know how to process experimental images in a DIC system and are familiar with concepts as subset size, step size and strain window size.
• Participants are familiar with extracting information from the obtained displacement and strain field data.