| 摘要 |
<p>A method for measuring deformation in specimens is provided. The method includes providing a shadow moire system, the shadow moire system including an illumination source, a reference grating and an image capture device and providing a specimen. The method further includes determining a selected distance between the specimen and the reference grating, and illuminating the specimen with light from the illumination source directed through the reference grating onto the specimen, thereby forming shadow moire fringes onto the specimen. The method further includes capturing an image of the shadow moire fringes by the image capture device.</p> |
