Embeddable distributed moisture and pH sensors for nondestructive inspection of aircraft lap joints

Edgar A. Mendoza; Albert N. Khalil; Zongjian Sun; Daniel P. Robinson; Steven J. Syracuse; Claudio Oliveira Egalon; Michael F. Gunther; Robert A. Lieberman

doi:10.1117/12.213565

7 July 1995 Embeddable distributed moisture and pH sensors for nondestructive inspection of aircraft lap joints

Edgar A. Mendoza, Albert N. Khalil, Zongjian Sun, Daniel P. Robinson, Steven J. Syracuse, Claudio Oliveira Egalon, Michael F. Gunther, Robert A. Lieberman

Author Affiliations +

Proceedings Volume 2455, Nondestructive Evaluation of Aging Aircraft, Airports, Aerospace Hardware, and Materials; (1995) https://doi.org/10.1117/12.213565
Event: Nondestructive Evaluation of Aging Infrastructure, 1995, Oakland, CA, United States

Abstract

Two distributed fiber optic sensors for use in the prevention and monitoring of corrosion in aircraft are described. These sensors, based on optical fibers that are intrinsically sensitive to either water or changes in pH, will alert maintenance personnel to the presence of water in lap joints and other inaccessible critical areas. Furthermore, the sensors can also locate precisely where the moisture infiltration has occurred. In a typical application, a sensor fiber would be embedded in a lap joint along the bottom panel of an aircraft's body, or on a wing, where water is likely to collect. Changes in the optical transmission through the fiber can be monitored either periodically or continuously to determine the extent of water penetration.

Citation Download Citation

Edgar A. Mendoza, Albert N. Khalil, Zongjian Sun, Daniel P. Robinson, Steven J. Syracuse, Claudio Oliveira Egalon, Michael F. Gunther, and Robert A. Lieberman "Embeddable distributed moisture and pH sensors for nondestructive inspection of aircraft lap joints", Proc. SPIE 2455, Nondestructive Evaluation of Aging Aircraft, Airports, Aerospace Hardware, and Materials, (7 July 1995); https://doi.org/10.1117/12.213565

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