Corrosion quantification by different nondestructive inspection methods

Paul S. Rutherford; Joe J. Luzar

doi:10.1117/12.339881

28 January 1999 Corrosion quantification by different nondestructive inspection methods

Paul S. Rutherford, Joe J. Luzar

Proceedings Volume 3586, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware III; (1999) https://doi.org/10.1117/12.339881
Event: Nondestructive Evaluation Techniques for Aging Infrastructures and Manufacturing, 1999, Newport Beach, CA, United States

Abstract

Boeing investigated corrosion effects on crack growth rates under a USAF contract with Tinker AFB in an engineering assignment performed by the Boeing Wichita. Sixty-eight crack growth specimens were notched, corroded, and fatigue test to determine crack growth rates. After salt spray exposure and crack growth testing the specimens were nondestructively inspected (NDI) by five different NDI methods to determine the amount of material lost. The NDI methods were chosen to represent different methods that could detect the presence of corrosion and digitize the data for analysis later to determine percent material lost. The NDI methods evaluated were computed tomography, pulse-echo ultrasonic c-scan, eddy current c-scan, thermography and digital radiography. Microscopy cross sectioning was also performed to visually document the corrosion damage. This data was used to compare the effectiveness of the NDI methods for detecting and quantifying corrosion damage and was used in the reanalysis of pre-corroded crack growth data. The results of NDI portion of this study are presented.

Citation Download Citation

Paul S. Rutherford and Joe J. Luzar "Corrosion quantification by different nondestructive inspection methods", Proc. SPIE 3586, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware III, (28 January 1999); https://doi.org/10.1117/12.339881

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