Van Leeuwen, Fiona; German, Emma; Berke, Ryan (Utah State University)
Faculty Advisor: Berke, Ryan (College of Engineering, Mechanical and Aerospace Engineering Department)
Stereo Digital Image Correlation (DIC) is a technique to visually analyze deformations and strains in a material. This way of calculating strains is useful due to the implications of the technique being non-contact. One of the methods to improve using this technique is to use scheimpflug (AKA tilt-tip lenses) to increase the depth of field of the image. These lenses are oriented at an angle with respect to the camera sensor, thereby rotating the angle between the image plane and the subject plane. These methods have been verified in fluids research for PIV measurements which are like DIC. The experiment was conducted by first verifying the method by using a single camera. The research currently being conducted is on using two cameras giving a verification for the 3D method. The goal for this research is to measure an increase in depth of field. Using the single camera 2D measurements, it has been shown that at steeper angles from the camera, the better the measurement when a larger scheimpflug angle is used.
Keyword: Depth of Field, Scheimpflug Lenses, Stereo DIC