Deep Learning Image Analysis for Angular Measurements in Wind Tunnels

Ferreira, José P.; Bell, James H.

doi:10.2514/6.2020-1979

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…Euler theorem states that the location of any point in space can be determined with at-least three rotations along azimuth, pitch and roll. 10,11 In the present DIC system, we first considered wind axis as reference and aligned our cameras in the plane of the wind axis. This eliminates the third rotation and hence only azimuth and pitch angles are considered in the present study.…”

Section: Euler Rotation Theoremmentioning

confidence: 99%

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DIC system with Euler transformation for structural measurements in wind tunnel

Khare

Kamle

Kwok

2023

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2023

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In the wind tunnel testing, structural deformation and motion should be measured using non-contact and precisely calibrated techniques. We designed, developed, and set up a novel DIC method for testing large and lightweight structures in wind tunnel. With the use of a universal mount mechanism and optical advancements for far-field structural evaluations, we increased the functionality of our current in-house stereo DIC system. The pitch and azimuth rotations of cameras are taken into consideration during the calibration of the WT-DIC system utilizing the Euler rotation theorem. Case studies for the developed DIC system include a small MAV flapping wing and a large deployable parachute.

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Section: Euler Rotation Theoremmentioning

confidence: 99%

“…High-resolution Telecentric lenses are calibrated for pixel resolution and offer ideal orthographic projection when used with the DIC system. The Euler angle transformation theory 10,11 is used to validate the developed DIC system. The idea considers rotations of the camera's pitch and azimuth.…”

Section: Introductionmentioning

confidence: 99%