Investigation of high hydrostatic experiments and ultimate load

Objectives The aim is to propose a structural strain test method under high hydrostatic pressure environment in water. And investigate the buckling pressure of composite shells under high hydrostatic pressure environment in water and the effect of different initial defects. Methods A high hydrostatic pressure experiment was conducted on a composite shell, and the strain of the structure was measured under 15 MPa hydrostatic pressure using the deep-water 3D-DIC (Digital Image