INVESTIGATION OF THE APPLICATION OF COHERENT ACOUSTIC IMAGING TO NONDESTRUCTIVE TESTING
Semi-annual technical rept. 1 May-31 Oct 1969
PERKIN-ELMER CORP DANBURY CT OPTICAL GROUP
Pagination or Media Count:
The purpose of this research program was to analyze and perform experimental demonstrations of the application of ultrasonic holographic and ultrasonic light diffraction techniques to the detection, analysis, and examination of the internal structure of optically opaque materials. During the period covered by this report, the electronic circuits for the ultrasonic camera were redesigned and the new hardware fabricated and tested. The revised system, described in detail in this report, has the inherent flexibility improved stability, and enhanced performance to permit the accurate generation of ultrasonic holograms. An elementary theory of the ultrasonic diffraction microscope is outlined in the report and some preliminary supporting experimental are described.
- Test Facilities, Equipment and Methods