Holographic interferometry - A nondestructive inspection method for the early detection of structural component damages
Abstract
Advantages of holographic interferometry in comparison to other new inspection methods are related to the contactless measurement of local deformations produced in structural components as a consequence of the application of test loads. Qualitative investigations providing information concerning the quality of components and the existence of local defects have been conducted for a number of years. It is now possible to perform also quantitative deformation studies. The principles of operation of holographic interferometry are discussed and a description is presented of examples which illustrate the practical application of holographic-interferometry inspection methods.
- Publication:
-
NASA STI/Recon Technical Report A
- Pub Date:
- April 1977
- Bibcode:
- 1977STIA...7731583W
- Keywords:
-
- Aircraft Construction Materials;
- Deformation;
- Holographic Interferometry;
- Nondestructive Tests;
- Photoelastic Analysis;
- Quality Control;
- Diffraction Patterns;
- Glass Fiber Reinforced Plastics;
- Interferometry;
- Sandwich Structures;
- Stress Distribution;
- Structural Analysis;
- Structural Members;
- Surface Distortion;
- Tensile Stress;
- Thermal Stresses;
- Instrumentation and Photography