Accession Number : AD0874653

Title :   Holographic Interferometric Fringe Analysis and Measurements of Controlled Surface Displacements.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Ratner, George H.

Report Date : JUN 1970

Pagination or Media Count : 92

Abstract : Piezoelectric transducers were used to control small displacements of a diffusely reflecting surface. Using double exposure and real time holographic techniques, the relationship between the surface motion and resulting interference fringe patterns was studied. The extent of the surface displacement was measured from the two and three dimensional nature of the interference fringes. The interferometric results were correlated with the actual displacements. The results indicate that holographic interferometry can be used as a practical method to obtain deformations of three dimensional objects and that piezoelectric transducers are an effective aid for the study of holographic interferometry. (Author)

Descriptors :   *LASERS), (*STEREOPHOTOGRAPHY, (*MOTION, MEASUREMENT), INTERFEROMETERS, PIEZOELECTRIC TRANSDUCERS, TEST METHODS, REAL TIME, SURFACES, VIBRATION, THESES.

Subject Categories : Lasers and Masers
      Holography
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE