14 September 1977 Analyzing Rapid Surface Motions With Moire Fringes
Author Affiliations +
Proceedings Volume 0097, 12th Intl Congress on High Speed Photography; (1977) https://doi.org/10.1117/12.955184
Event: 12th International Congress on High Speed Photography, 1976, Toronto, Canada
High speed photography of moire fringes was used to analyze the motion of surfaces subjected to dynamic loadings. The moire fringe device used a high power light source, a pair of Ronchi rulings, and commonly available lenses. One Ronchi ruling was projected at an angle onto the surface to be studied. The projected ruling was then imaged onto the second Ronchi ruling where a fringe pattern was produced which was characteristic of the stationary wall before impact. Any outward displacement of the surface caused a corresponding change in the original fringe pattern. Calculations of wall motion from fringe patterns were greatly simplified by the observation that each fringe can be represented as an ellipse which intersects the target (usually in two places) and both the projection and taking lenses.
© (1977) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. F. Fry, P. F. Fry, H. R. Taylor, H. R. Taylor, H. F. Swift, H. F. Swift, } "Analyzing Rapid Surface Motions With Moire Fringes", Proc. SPIE 0097, 12th Intl Congress on High Speed Photography, (14 September 1977); doi: 10.1117/12.955184; https://doi.org/10.1117/12.955184


Applications Of Photoelasticity To Elasto-Dynamics
Proceedings of SPIE (February 17 1987)
Analysis of javelin throwing by high-speed photography
Proceedings of SPIE (June 22 1999)
High-Speed VK-12 Camera
Proceedings of SPIE (February 01 1985)

Back to Top