Development of New Nondestructive Testing Techniques for Use in Bladed-Disk Dynamics Research.
Abstract
This program investigated the feasibility of using moire, speckle interferometry, and multiple wavelength contouring in conjunction with the real-time optical derotation system currently in use. Each of these approaches is addressed separately in this report to provide continuity in the text. The first task addressed is an analysis of the current real-time image-derotated holographic interferometry system being used to present a better understanding of the problems and inherent limitations in the system. In particular, the alignment of the derotator and the aberrations of the optical system are addressed. Based on this analysis, Section 2 presents recommendations and actions to improve the current system. The remainder of this report is dedicated to a discussion of moire, speckle, and multiple wavelength interferometry with particular emphasis on projected fringe moire interferometry. Each approach was evaluated on the basis of the form of data obtained, expense and availability of equipment, range of sensitivity, and possible errors. Section 10 of this report summarizes the results of this program and presents a recommended system for moire interferometry in the AFWAL/POTA facility.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1982
- Accession Number
- ADA122403
Entities
People
- James S. Harris
- Kevin G. Harding
Organizations
- University of Dayton