Steep Geometric Grating for Use in Moire Interferometry
Abstract
The theoretical background and the procedure of executing a new moire interferometry method, which combines the advantages of geometric moire method with the traditional moire interferometry, is reported. The method uses a steep geometric grating of about 40 lines/mm on a mirror finished specimen surface to achieve high contrast moire fringes. A special four beam moire interferometry bench is designed for the low grating frequency used. An application to experimental fracture mechanics analysis is briefly discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1993
- Accession Number
- ADA268759
Entities
People
- Albert S. Kobayashi
- F. X. Wang
- G. B. May
Organizations
- University of Washington