Full-field deformation measurement of fiber composite pressure vessel using digital speckle correlation method

Applications of the digital speckle correlation method (DSCM) for the full-field deformation measurement of carbon fiber/epoxy composite pressure vessel were investigated and the basic principles of displacement measurement by the DSCM are briefly given. The full-field displacement and strain distribution of a composite pressure vessel were evaluated under internal pressure. The results of the average strain value show a good agreement with the results from conventional electronic strain gauge technology. The results reveal that the DSCM is suitable for deformation measurement of composite pressure vessels in real engineering practice.