Modeling of structural steels and magnetite for NDE corrosion sensing

Varsha Singh; George M. Lloyd; Ming L. Wang

doi:10.1117/12.540208

29 July 2004 Modeling of structural steels and magnetite for NDE corrosion sensing

Varsha Singh, George M. Lloyd, Ming L. Wang

Proceedings Volume 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems; (2004) https://doi.org/10.1117/12.540208
Event: Smart Structures and Materials, 2004, San Diego, CA, United States

Abstract

In this paper Jiles-Atherton model, a phenomenological model, is proposed to model physical properties of structural steel and magnetite(corrosion product). The Jiles-Atherton model parameters based on mean field approximation were optimized to simulate the curves obtained from magnetic measurements using conventional quasi-static method. Results from hot rolled steel, a low carbon steel, were simulated using Jiles model to understand and correlate the measured and simulated curves. Hysteresis curves for magnetite, one of the most prevalent corrosion product and the only ferromagnetic component, are obtained to simulate the effect of corrosion products on the magnetic measurements of corroded structural steel. Since corrosion is initially a surface phenomenon, high frequency measurements were suggested from the simulations obtained to reduce the skin depth estimates and increase the accuracy of corrosion measurement.

Citation Download Citation

Varsha Singh, George M. Lloyd, and Ming L. Wang "Modeling of structural steels and magnetite for NDE corrosion sensing", Proc. SPIE 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (29 July 2004); https://doi.org/10.1117/12.540208

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