PSI - Issue 57

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Haelie Egbert et al. / Procedia Structural Integrity 57 (2024) 179–190 Haelie Egbert et al. / Structural Integrity Procedia 00 (2019) 000 – 000

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was used to remove all interior pixels and produce an outline of the gear by plotting all white pixels in the image. The transformation constant between the CMM trace and the digitally decomposed gear tooth profile was defined as y where and are the physical linear lengths between edges of image. This was used to scale the camera image, such that the outline of the tooth from the digital image and the tooth profile CMM measurement overlap. This process and the relative scaling from pixels to physical length is illustrated in Figure 8. x x P P L L y = =  (3)

Figure 8. CMM trace of gear tooth overlayed with surface extraction of digital tooth image used for scale calibration.