Mechanical Properties Measurement of Polymer Films by Bulge Test and Fringe Projection
Figure 10
3D surface construction of test film: (a) phase distribution before phase unwrapping and extension; (b) phase distribution after phase unwrapping and extension; (c) constructed 3D surface of the test film; (d) the deformation distribution on a cross-section plane, parallel to -plane and through the axisymmetric center, of 3D surface.
