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23 April 2020 3D trajectory reconstruction of fast moving objects under harsh conditions using flash radiography
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Abstract
Impacting of fast flying fragments or projectiles on a protection shield as well as high-speed rotating machineries like jet engine turbines or turbo chargers store high kinetic energies. When such impacting fragments respectively components burst caused by material fatigue failure that energy is released by local loading protection shields like ballistic armor systems or enveloping casings. The path of travel behind the armor shield and the fragmentation of the impacting objects provides engineers and designers useful information to evaluate failure risks. Ballistic testing by registration the fragments using flash X-ray technology (FXR) is a method to study the behavior of fragments or projectiles in front and behind the shield after interaction especially under harsh conditions. The path of travel as well as the residual velocity will be determined and analyzed. These results could also be used to support numerical simulation. We present a simple method to reconstruct the three-dimensional trajectory of fast-moving objects after impacting with protection shields or casings using a three-channel flash X-ray system each channel with dual remote tube heads triggered simultaneously to get three orthogonal X-ray images. These images are calibrated to reduce optical distortion. To calculate the 3D trajectory and the residual velocities the coordinates of the objects registered by the image plates of the vertical and horizontal plane will be descripted by two-dimensional vectors for each plane.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Norbert Faderl "3D trajectory reconstruction of fast moving objects under harsh conditions using flash radiography", Proc. SPIE 11404, Anomaly Detection and Imaging with X-Rays (ADIX) V, 114040F (23 April 2020); https://doi.org/10.1117/12.2558232
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