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Proceedings Paper

Nondestructive evaluation and quality control of surface treatments
Author(s): Curtis A. Rideout; Scott J. Ritchie
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Paper Abstract

The ability to detect and quantify beneficial surface and subsurface residual stresses, and operational damage in aerospace materials/structures in a reliable and efficient manner presents significant challenges to existing nondestructive inspection technologies. Induced Positron Analysis (IPA) has demonstrated the ability to nondestructively quantify shot peening/surface treatments and relaxation effects in single crystal superalloys, steels, titanium and aluminum with a single measurement as part of a National Science Foundation SBIR program and in projects with commercial companies. IPA measurement of surface treatment effects provides a demonstrated ability to quantitatively measure initial treatment effectiveness along with the effect of operationally induced changes over the life of the treated component. Use of IPA to nondestructively quantify surface and subsurface residual stresses in turbine engine materials and components has the potential to significantly improve the understanding at the microscale level the effects of surface coatings and treatments on the durability and fatigue life of critical components.

Paper Details

Date Published: 10 April 2007
PDF: 9 pages
Proc. SPIE 6530, Sensor Systems and Networks: Phenomena, Technology, and Applications for NDE and Health Monitoring 2007, 65300G (10 April 2007); doi: 10.1117/12.715242
Show Author Affiliations
Curtis A. Rideout, Positron Systems, Inc. (United States)
Scott J. Ritchie, Positron Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 6530:
Sensor Systems and Networks: Phenomena, Technology, and Applications for NDE and Health Monitoring 2007
Kara J. Peters, Editor(s)

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