Accession Number : AD0725748

Title :   Techniques for Measuring Displacement Fields of Deformed Bodies Using Holographic Interferometry.

Descriptive Note : Technical rept. Sep 69-Sep 70,

Corporate Author : AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Maddux,Gene E. ; Corwin,Richard R.

Report Date : MAR 1971

Pagination or Media Count : 45

Abstract : Holographic interferometry has reached a state of practical application wherein many different structural deformations have been recorded. Some of these recordings can be interpreted by casual observation while others require a detailed mathematical analysis to convert fringe patterns into displacement data. A few investigators have proposed different mathematical models for fringe formation resulting from surface displacements. Most of these models, however, do not adequately represent realistic structures. The report is concerned with examining these approaches and devising a systematic plan of investigating displacement determination for complex structures. (Author)

Descriptors :   (*SHELLS(STRUCTURAL FORMS), NONDESTRUCTIVE TESTING), (*DEFORMATION, *STEREOPHOTOGRAPHY), LASERS, INTERFEROMETERS, LOADS(FORCES), CYLINDRICAL BODIES, STRESSES, VECTOR ANALYSIS

Subject Categories : Holography
      Test Facilities, Equipment and Methods
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE