Journal of Failure Analysis and Prevention

, Volume 18, Issue 1, pp 50–54 | Cite as

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

  • Erik Mueller
  • Luis Carney
  • Kara Mixson
Tools and Techniques


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.


Aluminum Data interpretation Eddy current Fire damage Hardness testing Heat treated Nondestructive examination 



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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Copyright information

© ASM International 2017

Authors and Affiliations

  1. 1.Materials Laboratory DivisionNTSBWashingtonUSA
  2. 2.NAVAIR Materials Engineering, In-Service Support Center-JacksonvilleNAS JacksonvilleJacksonvilleUSA

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