Use of Eddy Current Conductivity and Hardness Testing to Evaluate Heat Damage in Aluminum Alloys |
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Authors: | Erik Mueller Luis Carney Kara Mixson |
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Affiliation: | 1.Materials Laboratory Division,NTSB,Washington,USA;2.NAVAIR Materials Engineering, In-Service Support Center-Jacksonville,NAS Jacksonville,Jacksonville,USA |
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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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