Digital Image Correlation (DIC) – GOM ARAMIS
The ARAMIS system measures by using a contact-free and material-independent method based on the principle of digital image correlation. The images of the test specimens under load that were recorded with high-resolution cameras or high-speed cameras are evaluated. The system determines the gray value distribution for thousands of subsections in each camera image and gives the subpixel-accurate positions of the corresponding measuring points in all images, from which then the 3D coordinates are calculated by triangulation.
The evaluation of this surface information for all load levels during the time in the 3D space delivers the exact X, Y and Z displacements, velocities and accelerations. Furthermore, ARAMIS determines from the 3D coordinates the surface strains, such as, major and minor strain. Proceeding from these measuring data, material parameters are determined, numerical simulations are validated and component motions and deformations are analyzed. The ARAMIS system can be used for specimen sizes in the range from several square millimeters to several square meters and supports both high-definition and high-speed cameras with frame rates up to more than 1,000,000 Hz.
Infrared Thermography – InfraTec
The thermography systems of the VarioCAM® HD series and the ImageIR® series with the latest detector technology are characterized by excellent metrological properties. The thermography cameras achieve a spatial resolution up to (2,560 x 2,048) IR pixels. This allows images and sequences to be created with unmatched spatial resolution, effectively avoiding geometrical measuring errors. Due to the excellent thermal resolution of up to 20 mK, even the smallest temperature differences can be accurately represented.
The optical path of the cameras consists of exchangeable infrared lenses, which can be equipped with a motor focus unit. Fast and precise focusing is achieved via the camera operating software. You can choose between the autofocus function and manual focusing. The use of infrared lenses with f/1.0 concept and very high luminous intensity enables the creation of thermograms that are free of undesired warm aperture effects or image inhomogeneities.