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Use of Eddy Current Conductivity and Hardness Testing to Evaluate Heat Damage in Aluminum Alloys

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Abstract

Aluminum alloys are heat treated to provide optimal material properties for use in a variety of applications. However, when exposed to abnormally high temperatures, an evaluation must be performed to determine if the aluminum component has been compromised. Nondestructive evaluation of aluminum alloys, by means of electrical conductivity and hardness tests, can assist in determining the condition of the part. These techniques require experience and engineering judgment to properly interpret the data produced in order to determine whether a part needs to be replaced. This article will elaborate on issues with these nondestructive techniques to help diagnose the condition of aluminum alloys exposed to high temperatures.

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Acknowledgments

In accordance with Title 5 Code of Federal Regulations §2635.807(b)(2), the views expressed in this article do not necessarily represent the views of the National Transportation Safety Board, The US Navy, or the United States of America.

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Authors and Affiliations

  1. Materials Laboratory Division, NTSB, L’Enfant Plaza East, SW, Washington, DC, 20594, USA

    Erik Mueller

  2. NAVAIR Materials Engineering, In-Service Support Center-Jacksonville, NAS Jacksonville, Jacksonville, FL, 32212, USA

    Luis Carney & Kara Mixson

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  1. Erik Mueller
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  2. Luis Carney
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  3. Kara Mixson
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Correspondence to Erik Mueller.

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Mueller, E., Carney, L. & Mixson, K. Use of Eddy Current Conductivity and Hardness Testing to Evaluate Heat Damage in Aluminum Alloys. J Fail. Anal. and Preven. 18, 50–54 (2018). https://doi.org/10.1007/s11668-017-0380-6

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  • DOI: https://doi.org/10.1007/s11668-017-0380-6

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