Experimental Mechanics

, Volume 21, Issue 12, pp 456–460 | Cite as

Deflection of rotating marine propellers using projected-grating moiré techniques

Deflections are measured on propellers rotating in air and under water using a projected-ruling moiré technique
  • Jerome P. Sikora


A projected-linear-grating moiré technique has been developed to determine the feasibility of studying the behavior of model marine propeliers rotating in a variable-pressure water tunnel. Full-field deflections were determined from photographs of moiré interference fringes on the propeller roating at speeds up to 2000 rpm.


Mechanical Engineer Fluid Dynamics Interference Fringe Water Tunnel Marine Propeller 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Dean, M., “Vulcanized-rubber Protection for Strain Gages in a Seawater Environment,”Experimental Mechanics,17 (8),303–307 (1977).CrossRefGoogle Scholar
  2. 2.
    Sikora, J.P., “Structural Analysis of Propellers Rotating Under Water Using Holography,” Proceedings of the SNAME Symposium-Propellers ′75, Philadelphia, PA (1976).Google Scholar
  3. 3.
    Luxmoore, A.R., “The Moiré Effect Applied to Experimental Stress Analysis,” Strain,5 (3 (1969).Google Scholar
  4. 4.
    Hovanesian Der, J., and Hung, Y.Y., “Moiré Contour-Sum Contour-Difference, and Vibration Analysis of Arbitrary Objects,” Applied Optics,10 (12) (1971).Google Scholar
  5. 5.
    Hovanesian Der, J., Haskell, R.E. and Powell, R.L., “Use of a Projected-Ruling Moiré Method for Vibration and Deflection Measurements of Three-Dimensional Structures,” Proceedings of the Symposium-Engineering Applications of Holography, Los Angeles, CA (1972).Google Scholar
  6. 6.
    Wasowski, J.J., “Moiré Surface Contouring by Addition Method,” Proceedings of the Sixth International Conference on Experimental Stress Analysis, Munich, W. German (1978).Google Scholar
  7. 7.
    Khetan, R.P. and Chiang, F.P., “A General Analysis of Projection Moiré Method,” Proceedings of the 15th Midwestern Mechanics Conference, Univ. of Illinois (1977).Google Scholar

Copyright information

© Society for Experimental Mechanics, Inc. 1981

Authors and Affiliations

  • Jerome P. Sikora
    • 1
  1. 1.David W. Taylor Naval Ship R & D CenterBethesda

Personalised recommendations