Verformungsmessung | Bauteilerprobung | Numerische Simulation | | | | | Full-field dynamic deformation and strain measurements using high-speed digital cameras | |  | | | | Messsysteme: ARAMIS | | | | Keywords: 3D image correlation, digital high-speed photography, impact testing, LS-DYNA, dynamic strain, full-field, gas gun, reinforced carbon-carbon | | | | Digital cameras are rapidly supplanting film, even for very high speed and ultra high-speed applications. The benefits of these cameras, particularly CMOS versions, are well appreciated. This paper describes how a pair of synchronized digital high-speed cameras can provide full-field dynamic deformation, shape and strain information, through a process known as 3D image correlation photogrammetry. The data is equivalent to thousands of non-contact x-y-z extensometers and strain rosettes, as well as instant non-contact CMM shape measurement. A typical data acquisition rate is 27,000 frames per second, with displacement accuracy on the order of 25-50 microns, and strain accuracy of 250-500 microstrain. |  | |
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Mittelweg 7-8
38106 Braunschweig
Deutschland |
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