ULTRASONIC NONDESTRUCTIVE MEASUREMENT OF CASE DEPTH.
Final engineering rept. on Phase 1, 2 and 3,
SPERRY PRODUCTS INC DANBURY CONN
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Results indicate that pulse echo structure scattering technique might be applied successfully to direct case depth measurements of chromium-molybdenum steels within the range of a few thousandths to several inches of case depth. Case hardness might be measured using a pulse echo surface mode velocity technique within limits of area investigated. In addition the bracketing of ultrasonic data obtained during the investigations indicated that several techniques for ultrasonic determinations of hardness and case depth are possible. Ultrasonic behavior relationships in chromium-molybdenum steels are given.
- Fabrication Metallurgy
- Test Facilities, Equipment and Methods